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Artykuły w czasopismach na temat „Ion exchange”

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Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 1 sierpnia 2024

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1

Roto, Roto, Iqmal Tahir i Umi Nur Sholikhah. "SYNTHESIS OF HYDROTALCITE Zn-Al-SO4 AS ANION EXCHANGER AND ITS APPLICATION TO TREAT OF POLLLUTANT CONTAINED HEXACYANOFERRAT(II)". Indonesian Journal of Chemistry 8, nr 3 (17.06.2010): 307–13. http://dx.doi.org/10.22146/ijc.21583.

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Synthesis of Zn-Al-SO4 hydrotalcite and its application as anion exchanger for hexacyanoferrat (II) have been studied. Synthesis of Zn-Al-SO4 hydrotalcite was carried out by stoichiometric method and hydrothermal treatment. Sulphate in hydrotalcite interlayer was exchanged by hexacyanoferrat (II) that was assumed as pollutant. Kinetics of ion exchange was also investigated. The product of ion exchange was characterized by XRD, IR spectrophotometry and atomic absorption spectrometry. Zn-Al-SO4 hydrotalcite can be obtained by stoichiometric method at pH 8 and followed by hydrothermal treatment. The chemical formula of the hydrotalcite was Zn0.74Al0.26(OH)1.74(SO4)0.13.0.52H2O. The hexacyanoferrat (II) anion could exchange sulphate in hydrotalcite interlayer as showed by IR spectra and XRD patterns. The anion exchange capacity was 645.35 meq/100 g, and the kinetics of ion exchange reaction was first order with k = 5 x 10-5 s-1. It showed that Zn-Al-Fe(CN)6 could be regenerated easily, so it has been regenerate frequently. Keywords: hydrotalcite, anion exchanger, hexacyanoferrat
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2

Li, Heng. "Study of an Inorganic Ion Exchanger Mg2Ti1.25(PO4)3". Advanced Materials Research 442 (styczeń 2012): 50–53. http://dx.doi.org/10.4028/www.scientific.net/amr.442.50.

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The ion-exchanger Mg2Ti1.25(PO4)3 of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Mg2Ti1.25(PO4)3 was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Mg2Ti1.25(PO4)3) has the saturation capacity of exchange for Li+ higher than those for other alkali ions, the saturation capacity of exchange for Li+ reaches to 6.0mmol/g, MgTi-750(H) has a higher selectivity of ion exchange for Li+ than for other alkali ions. These result show MgTi-750 (H) has better memory and selectivity of ion exchange, and higher capacity of ion exchange for Li+. It is a kind of prospective ionic sieve for Li+.
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3

Jiang, Jin He. "Synthesis of Al1.75Fe1.25(PO4)3 and its Selectivity to Li+ Exchange". Advanced Materials Research 490-495 (marzec 2012): 3703–6. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.3703.

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The ion-exchanger Al1.75Fe1.25(PO4)3of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Al1.75Fe1.25(PO4)3was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Al1.75Fe1.25(PO4)3) has the saturation capacity of exchange for Li+higher than those for other alkali ions, the saturation capacity of exchange for Li+reaches to 7.1mmol/g, AlFe-720(H) has a higher selectivity of ion exchange for Li+than for other alkali ions. These result show AlFe-720 (H) has better memory and selectivity of ion exchange, and higher capacity of ion exchange for Li+. It is a kind of prospective ionic sieve for Li+.
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4

Burhanuddin, Chairul Iksan, i M. Hidayat. "Fiat Money Inconsistency and the Return of Dinar-Dirham as a Medium of Exchange in the Community". SENTRALISASI 10, nr 2 (30.06.2021): 104. http://dx.doi.org/10.33506/sl.v10i2.1326.

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Coronavirus ior ireferred ito ias icovid-19 ihas icaused ivarious ikinds iof inegative ieffects, iespecially iin ithe ieconomic ifield. iThe isoaring iunemployment irate, ithe icontraction iin ithe ivalue iof ithe irupiah iand iother icurrencies ihas iresulted iin ian iincreasingly isluggish ieconomic imovement iin irecent itimes iuntil ithe ipanic iof ithe ivalue iof igold icontinues ito irise iin irecent imonths. iThe iqualitative imethod iis iused iby iscientifically idescribing ithe iimpact iof ithe iCovid i19 ivirus icase ion ithe imovement iof icurrency iand igold ivalues. iThe iresults iof ithis istudy iindicate ithat ithe iCovid i19 ivirus ihas ia iquite inegative iimpact ion ithe ieconomic isector, iespecially ion icurrency iand igold ivalue imovements. iThe imovement iin ithe ivalue iof ithe irupiah icontracted ito itouch iRp.14,000 iwhile ithe ivalue iof igold itended ito irise isignificantly. iThe irising igold ivalue ishows ia ipositive itrend itowards ithe ipossible iimplementation iof ithe ilegal iuse iof ithe idinar iand idirham icurrency iin ithe icommunity. iGold iis ino ilonger iseen ias ia iSave iHaven, ibut iits irole ias ian iextension iof imuamalah iactivities i(buying iand iselling) iin ithe icommunity iis iincreasingly ivisible. iThere iis ipanic iand ipsychologically idisturbing ieconomic iand icommunity iactors iin iresponding ito ithis iincident.iCoronavirus ior ireferred ito ias icovid-19 ihas icaused ivarious ikinds iof inegative ieffects, iespecially iin ithe ieconomic ifield. iThe isoaring iunemployment irate, ithe icontraction iin ithe ivalue iof ithe irupiah iand iother icurrencies ihas iresulted iin ian iincreasingly isluggish ieconomic imovement iin irecent itimes iuntil ithe ipanic iof ithe ivalue iof igold icontinues ito irise iin irecent imonths. iThe iqualitative imethod iis iused iby iscientifically idescribing ithe iimpact iof ithe iCovid i19 ivirus icase ion ithe imovement iof icurrency iand igold ivalues. iThe iresults iof ithis istudy iindicate ithat ithe iCovid i19 ivirus ihas ia iquite inegative iimpact ion ithe ieconomic isector, iespecially ion icurrency iand igold ivalue imovements. iThe imovement iin ithe ivalue iof ithe irupiah icontracted ito itouch iRp.14,000 iwhile ithe ivalue iof igold
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5

YOSHIOKA, TOSHIO. "Ion Exchange". Sen'i Gakkaishi 44, nr 9 (1988): P344—P345. http://dx.doi.org/10.2115/fiber.44.9_p344.

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6

WATANABE, Junya. "Novel Ion Exchange Resins and Ion Exchange Technologies." Journal of Ion Exchange 10, nr 2 (1999): 70–73. http://dx.doi.org/10.5182/jaie.10.70.

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7

Ismailov, Rovshan, Islom Khaydarov, Okhun Khasanov, Nailya Valeeva, Tokhir Azimov i Kamil Baltabaev. "Thermodynamics of the obtained ion exchanges for the sorption of various ions in environmental wastewaters". E3S Web of Conferences 497 (2024): 02041. http://dx.doi.org/10.1051/e3sconf/202449702041.

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This study focuses on investigating the thermodynamic parameters of an ion exchanger synthesized using chlorinated polypropylene with polyethylene polyamines. The ion exchanger, derived from chlorinated polypropylene, demonstrates full compliance with chemical resistance standards. The research involves the examination of isotherms governing the sorption process of Cu(II) and Ni(II) ions by the ion exchanger. These isotherms adhere to the Freundlich model, offering insights into the ion-exchange behavior of the material. Additionally, the study delves into the dynamic exchange capacity and desorption characteristics of the resulting ion exchanger in a granular state. These parameters are crucial for understanding the material's performance in practical applications, shedding light on its ability to efficiently exchange and release metal ions. By comprehensively analyzing the thermodynamic aspects and sorption behavior of the synthesized ion exchanger, this work contributes valuable knowledge to the field of ion exchange materials. The findings offer a basis for further optimization and application of such materials in various industrial processes, particularly in the removal of heavy metal ions from aqueous solutions.
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8

Kipriyanova, E. S., D. V. Konev, T. A. Kravchenko i S. V. Khorol’skaya. "Ion exchange and redox reactions in metal-ion exchanger nanocomposites". Russian Journal of Physical Chemistry A 86, nr 7 (24.05.2012): 1128–33. http://dx.doi.org/10.1134/s0036024412070114.

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9

Li, Heng. "Synthesis of Al1.6667Ti(PO4)3 and its Selectivity to Li+ Exchange". Advanced Materials Research 463-464 (luty 2012): 165–68. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.165.

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The ion-exchanger Al1.6667Ti(PO4)3 of inverse spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Al1.6667Ti(PO4)3 was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger has the saturation capacity of exchange for Li+ higher than those for other alkali ions, the saturation capacity of exchange for Li+ reaches to 6.6mmol/g.
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10

Singare, P. U. "Radiotracer Technique in Study of Strongly Basic Anion Exchange Resins Dowex-SBR LC and Indion-454". International Letters of Chemistry, Physics and Astronomy 18 (wrzesień 2013): 37–49. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.18.37.

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The present paper demonstrates application of isotopic tracer technique in characterization of anion exchange resins Dowex-SBR LC and Indion-454 for which 131I and 82Br radio isotopes were used. The characterization was made based on iodide and bromide ion-isotopic exchange reaction kinetic data obtained for the two resins. It was observed that during iodide ion-isotopic exchange reaction performed at 35.0 °C, 1.000 g of ion exchange resins and 0.002 mol/L labeled iodide ion solution, the values of specific reaction rate (min-1), amount of ion exchanged (mmol), initial rate of ion exchange (mmol/min) and log Kd were 0.379, 0.426, 0.161 and 16.2 respectively for Dowex-SBR LC resin, which was higher than the respective values of 0.156, 0.243, 0.038 and 13.4 as that obtained by using Indion-454 resins. The identical trend was observed for the two resins during bromide ion-isotopic exchange reaction. The results of present investigation also indicate that during the two ion-isotopic exchange reactions, for both the resins, there exists a strong positive linear correlation between amount of ions exchanged and concentration of ionic solution; and strong negative correlation between amount of ions exchanged and temperature of exchanging medium. Based on overall results it appears that under identical experimental conditions, as compared to Indion-454 resins, Dowex-SBR LC resins show superior performance. It is expected here that the present technique can be extended further for characterization of different ion exchange resins which will further help in the selection of those reins for the specific industrial application
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11

Singare, P. U. "Radiotracer Technique in Study of Strongly Basic Anion Exchange Resins Dowex-SBR LC and Indion-454". International Letters of Chemistry, Physics and Astronomy 18 (28.09.2013): 37–49. http://dx.doi.org/10.56431/p-p17eh4.

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The present paper demonstrates application of isotopic tracer technique in characterization of anion exchange resins Dowex-SBR LC and Indion-454 for which 131I and 82Br radio isotopes were used. The characterization was made based on iodide and bromide ion-isotopic exchange reaction kinetic data obtained for the two resins. It was observed that during iodide ion-isotopic exchange reaction performed at 35.0 °C, 1.000 g of ion exchange resins and 0.002 mol/L labeled iodide ion solution, the values of specific reaction rate (min-1), amount of ion exchanged (mmol), initial rate of ion exchange (mmol/min) and log Kd were 0.379, 0.426, 0.161 and 16.2 respectively for Dowex-SBR LC resin, which was higher than the respective values of 0.156, 0.243, 0.038 and 13.4 as that obtained by using Indion-454 resins. The identical trend was observed for the two resins during bromide ion-isotopic exchange reaction. The results of present investigation also indicate that during the two ion-isotopic exchange reactions, for both the resins, there exists a strong positive linear correlation between amount of ions exchanged and concentration of ionic solution; and strong negative correlation between amount of ions exchanged and temperature of exchanging medium. Based on overall results it appears that under identical experimental conditions, as compared to Indion-454 resins, Dowex-SBR LC resins show superior performance. It is expected here that the present technique can be extended further for characterization of different ion exchange resins which will further help in the selection of those reins for the specific industrial application
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12

Jiang, Jin He. "Synthesis of Mg0.5Ti0.5PO4 and Its Selectivity to Li+ Exchange". Advanced Materials Research 512-515 (maj 2012): 1001–4. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1001.

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The ion-exchanger Mg0.5Ti0.5PO4 of spinel type was prepared by means of the solid state reaction crystallization method, and was acid-modified. This inorganic ion-exchanger(Mg0.5Ti0.5PO4) has the saturation capacity of exchange for Li+ higher than those for other alkali ions, the saturation capacity of exchange for Li+ reaches to 5.4mmol/g, MgTi-750(H) has a higher selectivity of ion exchange for Li+ than for other alkali ions.
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13

Nath, K. V. Surendra, i S. N. Tandon. "Synthesis and characterization of a new crystalline tin(IV) arsenophosphate ion exchanger". Canadian Journal of Chemistry 68, nr 2 (1.02.1990): 346–49. http://dx.doi.org/10.1139/v90-050.

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A new crystalline layered inorganic ion exchanger tin(IV) arsenophosphate with the formula Sn(HAsO4)(HPO4)•H2O has been prepared by refluxing the amorphous precursor. This exchanger has been characterized by X-ray powder pattern, chemical analysis, IR spectra, and thermal dehydration. Its ion exchange behaviour towards sodium ions is reported. The exchanger has an exchange capacity of 5.36 mequiv./g for Na+. The performance of tin(IV) arsenophosphate is compared with crystalline tin(IV) phosphate and arsenate. Keywords: cation exchanger, crystalline tin(IV) arsenophosphate, ion exchange, thermal behaviour, X-ray studies.
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14

Bortun, Anatoly I., Lyudmila N. Bortun i Abraham Clearfield. "Ion Exchange Behavior of the NH4TiOPO4Based Exchanger". Solvent Extraction and Ion Exchange 16, nr 2 (marzec 1998): 669–81. http://dx.doi.org/10.1080/07366299808934546.

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15

Nabi, S. A., Mu Naushad i Rani Bushra. "A New Hybrid EDTA–Zirconium Phosphate Cation-Exchanger: Synthesis, Characterization and Adsorption Behaviour for Environmental Monitoring". Adsorption Science & Technology 27, nr 4 (maj 2009): 423–34. http://dx.doi.org/10.1260/026361709790252641.

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EDTA–zirconium phosphate has been synthesized as a new amorphous hybrid cation-exchanger by the combination of the inorganic ion-exchanger zirconium phosphate and EDTA, thereby providing a new class of organic–inorganic hybrid ion-exchanger with better mechanical and granular properties, a good ion-exchange capacity (2.40 mequiv/g dry exchanger for Na+), good reproducibility, and a higher stability and selectivity towards heavy metal ions. It has been characterized using FT-IR, TGA/DTA, X-ray and SEM methods, in addition to ion-exchange studies such as the determination of its ion-exchange capacity, elution and distribution behaviour, to provide a better understanding of the ion-exchange behaviour of the material. On the basis of distribution studies, the material was found to be highly selective towards Th(IV) and its selectivity was examined by achieving some important binary separations such as Cd(II)–Th(IV), Ni(II)–Th(IV), Hg(II)–Th(IV), Zn(II)–Th(IV), Pb(II)–Th(IV) and Al(III)–Th(IV) by column means, indicating its utility in environmental pollution control in one way or other.
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16

Somya, Amita, Vibha Upadhyay i Anjali Peter. "Ion exchange and Thermal Studies on n-butyl acetate zirconium(IV) phosphate: A Novel Hybrid Cation exchanger". Research Journal of Chemistry and Environment 28, nr 4 (29.02.2024): 82–87. http://dx.doi.org/10.25303/284rjce082087.

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n-butyl acetate zirconium (IV) phosphate has been reported as a novel hybrid ion exchanger, namely an organic-based hybrid ion exchanger. This newly reported material has been characterized by a number of physico-chemical characterization techniques including FTIR analysis, SEM study, UV-Vis spectrophotometry and elemental analysis. In addition to describing its method of synthesis, this research also reports on the characterization of its ion exchange properties such as its ion exchange capacity, concentration study, elution study and recycling study. Thermal behavior of the reported exchanger has also been explored at various temperatures revealing 91.4% of retention in ion exchange capacity on heating upto 2000C and 74.5% upto 4000C which exhibits the way to explore its applications in higher temperature ranges.
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17

Šestan, Indira, Sabina Begić, Melisa Ahmetović, Husejin Keran, Erna Begić, Dženana Mehmedović i Vanja Srebro. "DETERMINATION OF PHYSICAL AND CHEMICAL PARAMETERS OF WATER BEFORE AND AFTER ION EXCHANGE TREATMENT". Technologica acta 16, nr 2 (kwiecień 2024): 67–71. http://dx.doi.org/10.51558/2232-7568.2023.16.2.67.

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In accordance with consumer requirements, the water must be adequately purified, and the corresponding parameters within the defined values. Various methods are used for this purpose, of which the ion exchange method can be highlighted as the simplest, most efficient and economically profitable. Ion exchange is a reversible process of ion exchange between a solid phase and an electrolyte solution. The ion exchanger is a macromolecular insoluble material that has chemically bound electrified groups and mobile, oppositely charged ions that compensate for this electrification. Ion exchangers are usually used in the form of compact or granular beds that fill the column through which the solution with the ions to be exchanged flows.They usually contain phenolic, carboxylic, sulfonic amino and other groups, which is why the treatment also results in decarbonization, softening, demineralization and denitrification of water. As the assessment of water quality is based on the most significant physico-chemical parameters, the aim of the work is the analysis of drinking water before and after treatment with an ion exchanger.For this purpose, organoleptic parameters such as smell, taste and color were first analyzed. After that, physico-chemical parameters were analyzed: pH values, electrical conductivity, m-alkalinity, p-alkalinity, water hardness, organic matter content, chloride content, iron and manganese content. An ion exchanger based on resin was used, which after use was regenerated by washing with NaClsolution.The analysis of the water sample, before and after the ion exchange treatment, showed that the treatment process was effective and that the decarbonization and softening of the water was carried out, whereby the water was categorized as soft water (water <9⁰dH).The analyzed water is tasteless, odorless and colorless before and after treatment. The results of the analysis showed that all the values of the analyzedphysico-chemical parametersare in accordance with the Rulebook on the Healthiness of Drinking Water(Official Gazetteof Federation of Bosnia and Herzegovina No.40/10) arebelow the maximum allowed values. KEYWORDS:water, ion exchange, physical-chemical parameters; water treatment
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18

Soldatov, V. S., Z. I. Kuvaeva, V. A. Bychkova i L. A. Vodopyanova. "Ion-exchange equilibria of aliphatic amino acid cations on a liquid sulphonic ion exchanger: comparison with ion-exchange resins". Reactive and Functional Polymers 38, nr 2-3 (listopad 1998): 237–47. http://dx.doi.org/10.1016/s1381-5148(97)00156-9.

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19

Echigo, S., S. Itoh i A. Niwa. "Effects of ion-exchange treatment on bromate formation and oxidation efficiency during ozonation". Water Supply 12, nr 2 (1.03.2012): 187–92. http://dx.doi.org/10.2166/ws.2012.018.

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Ion-exchange treatment is a promising technique for removing hydrophilic compounds during drinking water treatment. In this study, we applied several different ion exchangers (i.e., anion exchange resins and a hydrotalcite compound) to bromide removal to minimize bromate formation during ozonation. It was found that ion-exchange treatment affected ozone and hydroxyl radical concentration profiles as well as bromate ion concentration after ozonation. Selecting an appropriate ion exchanger is important to achieve both the oxidation of target contaminants and the reduction of bromate ion during ozonation.
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20

Singare, P. U. "Application of Nondestructive Radio Tracer Technique in Performance Evaluation of Anion Exchange Resins Duolite ARA-9366 and Duolite A-171". International Letters of Chemistry, Physics and Astronomy 18 (wrzesień 2013): 63–76. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.18.63.

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Radio analytical technique as a non-destructive technique was used in the present investigation to trace the kinetics of ion-isotopic exchange reaction taking place in Duolite ARA-9366 (nuclear grade) and Duolite A-171 (non-nuclear grade) anion exchange resins. The kinetics data suggest that during iodide ion-isotopic exchange reactions under identical experimental conditions of 40.00C, 1.000 g of ion exchange resins and 0.003 M labeled iodide ion solution, the values of specific reaction rate (min-1), amount of iodide ion exchanged (mmol), initial rate of iodide ion exchange (mmol/min) and log Kd were 0.176, 0.383, 0.067 and 7.8 respectively for Duolite ARA-9366 resin, which was higher than 0.142, 0.353, 0.050 and 7.0 respectively as that obtained for Duolite A-171 resins. Also it is observed that at a constant temperature of 40.0 °C, as the concentration of labeled iodide ion solution increases 0.001 M to 0.004 M, the percentage of iodide ions exchanged increases from 49.20% to 51.80% for Duolite ARA-9366 resins; and from 45.20% to 47.80% for Duolite A-171 resins. The similar trend was observed for the two resins during bromide ion-isotopic exchange reactions. The overall results indicate superior performance of Duolite ARA-9366 resins over Duolite A-171 resins under identical operational parameters.
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Singare, P. U. "Application of Nondestructive Radio Tracer Technique in Performance Evaluation of Anion Exchange Resins Duolite ARA-9366 and Duolite A-171". International Letters of Chemistry, Physics and Astronomy 18 (28.09.2013): 63–76. http://dx.doi.org/10.56431/p-952oxf.

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Radio analytical technique as a non-destructive technique was used in the present investigation to trace the kinetics of ion-isotopic exchange reaction taking place in Duolite ARA-9366 (nuclear grade) and Duolite A-171 (non-nuclear grade) anion exchange resins. The kinetics data suggest that during iodide ion-isotopic exchange reactions under identical experimental conditions of 40.00C, 1.000 g of ion exchange resins and 0.003 M labeled iodide ion solution, the values of specific reaction rate (min-1), amount of iodide ion exchanged (mmol), initial rate of iodide ion exchange (mmol/min) and log Kd were 0.176, 0.383, 0.067 and 7.8 respectively for Duolite ARA-9366 resin, which was higher than 0.142, 0.353, 0.050 and 7.0 respectively as that obtained for Duolite A-171 resins. Also it is observed that at a constant temperature of 40.0 °C, as the concentration of labeled iodide ion solution increases 0.001 M to 0.004 M, the percentage of iodide ions exchanged increases from 49.20% to 51.80% for Duolite ARA-9366 resins; and from 45.20% to 47.80% for Duolite A-171 resins. The similar trend was observed for the two resins during bromide ion-isotopic exchange reactions. The overall results indicate superior performance of Duolite ARA-9366 resins over Duolite A-171 resins under identical operational parameters.
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22

Righini, Giancarlo C., i Jesús Liñares. "Active and Quantum Integrated Photonic Elements by Ion Exchange in Glass". Applied Sciences 11, nr 11 (4.06.2021): 5222. http://dx.doi.org/10.3390/app11115222.

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Ion exchange in glass has a long history as a simple and effective technology to produce gradient-index structures and has been largely exploited in industry and in research laboratories. In particular, ion-exchanged waveguide technology has served as an excellent platform for theoretical and experimental studies on integrated optical circuits, with successful applications in optical communications, optical processing and optical sensing. It should not be forgotten that the ion-exchange process can be exploited in crystalline materials, too, and several crucial devices, such as optical modulators and frequency doublers, have been fabricated by ion exchange in lithium niobate. Here, however, we are concerned only with glass material, and a brief review is presented of the main aspects of optical waveguides and passive and active integrated optical elements, as directional couplers, waveguide gratings, integrated optical amplifiers and lasers, all fabricated by ion exchange in glass. Then, some promising research activities on ion-exchanged glass integrated photonic devices, and in particular quantum devices (quantum circuits), are analyzed. An emerging type of passive and/or reconfigurable devices for quantum cryptography or even for specific quantum processing tasks are presently gaining an increasing interest in integrated photonics; accordingly, we propose their implementation by using ion-exchanged glass waveguides, also foreseeing their integration with ion-exchanged glass lasers.
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23

KUMADA, Nobuhiro, Yoshinori YONESAKI, Takahiro TAKEI i Nobukazu KINOMURA. "New development of inorganic ion exchanger: Ion-Exchange of Na+ Ion in Na0.95Mo2O4". Journal of Ion Exchange 16, nr 1 (2005): 55–59. http://dx.doi.org/10.5182/jaie.16.55.

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24

Mispa, K. Jacinth, P. Subramaniam i R. Murugesan. "Studies on Ion-Exchange Properties of Polyaniline Zr(IV) Tungstoiodophosphate Nanocomposite Ion Exchanger". Journal of Polymers 2013 (7.10.2013): 1–12. http://dx.doi.org/10.1155/2013/356058.

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Organic-inorganic hybrid materials prepared by sol-gel approach have attracted a great deal of attention in material science. Organic polymeric part of the composite provides mechanical and chemical stability whereas the inorganic part supports the ion-exchange behaviour and thermal stability and also increases the electrical conductivity. Such modified composite materials can be applied as an electrochemically switchable ion exchanger for water treatment, especially water softening. Polyaniline zirconium(IV) tungstoiodophosphate nanocomposite ion exchanger is prepared by sol-gel method. Polyaniline zirconium(IV) tungstoiodophosphate nanocomposite ion exchanger is synthesized and characterized by Fourier transform-infrared spectra, ultraviolet-visible spectra, X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, ion exchange, conductivity, and antimicrobial studies. A mechanism for the formation of the polyaniline zirconium(IV) tungstoiodophosphate nanocomposite ion exchanger was discussed. The route reported here may be used for the preparation of other nanocomposite ion exchangers.
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Laiq, Esmat, i Syed Ashfaq Nabi. "Preparation, Characterization and Analytical Application of Tin (IV) Tungstoselenate - 1, 10 Phenanthroline". Oriental Journal Of Chemistry 37, nr 4 (30.08.2021): 997–1001. http://dx.doi.org/10.13005/ojc/370430.

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Synthesis of a composite ion exchange material Tin (IV) tungstoselenate - 1, 10 phenanthroline has been achieved by mixing differentvolume ratios of the organic counterpart with the inorganic ion exchangertin (IV) tungstoselenate. Final sample, having 0.88mmoles of 1, 10 phenanthroline per gram of inorganic ion exchanger, was chosen for characterization, including ion exchange capacity, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The ion exchange capacity of Li+, Na+, Ca2+, Sr2+ metals was determined by using the synthesized material. The adsorption behavior of Al3+,Co2+,Ni2+,Cu2+,Cd2+,Pb2+ in various solvent systems have been studied. Based on distribution Coefficient (Kd) values, few analytically necessary separations of metal ions from the synthetic mixture have been achieved on the column of the composite ion exchanger.
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Song, Fujiao, Yan Cao, Yunxia Zhao, Ruiyu Jiang, Qi Xu, Jinlong Yan i Qin Zhong. "Ion-Exchanged ZIF-67 Synthesized by One-Step Method for Enhancement of CO2 Adsorption". Journal of Nanomaterials 2020 (17.02.2020): 1–11. http://dx.doi.org/10.1155/2020/1508574.

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Li+- and Na+-exchanged ZIF-67 was synthesized by a new one-step method of ion as-exchange technique and tested as CO2 adsorbents. As a comparison, the standard ion-exchange procedure was also carried out. The powder X-ray diffraction (XRD), scanning electronic microscope (SEM), particle size analyzer (PSD), and thermal gravimetry analysis (TGA) were used to investigate the effect of ion-exchange techniques on the structure of the materials. CO2 uptake of ZIF-67 ion exchanged by one-step method is much higher than that by the standard ion-exchange procedure. All of the adsorption isotherms show linear patterns with stable adsorption rate from 0 bar to 1 bar, which reveals the materials could get excellent adsorption performance at higher pressure range (>1 bar). Elemental analysis, N2 physical adsorption, and the point of zero charge (PZC) were carried out to confirm the adsorption mechanism. van der Waals interaction determined by the surface area and coordination interaction resulting from electrostatic interaction work in synergy to enhance CO2 adsorption performance of ZIF-67 ion exchanged by the one-step method.
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Li, Heng. "Study of an Inorganic Ion Exchanger Li1.2Zn0.9PO4". Advanced Materials Research 424-425 (styczeń 2012): 780–83. http://dx.doi.org/10.4028/www.scientific.net/amr.424-425.780.

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New complex inorganic ion exchanger Li1.2Zn0.9PO4is synthesized. Chemical composition, structure and some related properties and complex mechanism of this ion exchanger are investigated by electron microscopic, X-ray diffraction and chemical methods. The ion exchange behavior of Li1.2Zn0.9PO4has been studied in detail. Results of column test indicated, that the exchange capacity obtained from tests for Li+in 0.1mol /L HNO3solution is 6.3mmol/g.
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28

Singare, P. U. "Non Destructive Application of Radioactive Tracer Isotopes for Performance Evaluation of Industrial Grade Anion Exchange Resins Tulsion A-33 and Indion NSSR". International Letters of Chemistry, Physics and Astronomy 18 (wrzesień 2013): 50–62. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.18.50.

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The present study deals with non-destructive application of radioactive tracer isotopes to evaluate the performance of Tulsion A-33 (nuclear grade) and Indion NSSR (non-nuclear grade) anion exchange resins. The performance evaluation was done by carrying out the iodide and bromide ion-isotopic exchange reactions using the above resins. It was observed that at a constant temperature of 40.0 °C, as the concentration of labeled iodide ion solution increases 0.001 M to 0.004 M, the percentage of iodide ions exchanged increases from 58.0% to 64.0% for Tulsion A-33 resins; and from 48.4% to 50.8% for Indion NSSR resins. Similarly in case of bromide ion-isotopic exchange reaction under identical experimental conditions, the percentage of bromide ions exchanged increases from 45.6% to 50.4% for Tulsion A-33 resin; and from 39.8% to 44.6% for Indion NSSR resin. It was also observed that during iodide ion-isotopic exchange reaction at 40.0 °C, using 1.000 g of ion exchange resins and 0.003 M labeled ionic solution, using Tulsion A-33 resin the values of specific reaction rate (min-1), amount of iodide ion exchanged (mmol), initial rate of iodide ion exchange (mmol/min) and log Kd were 0.229, 0.469, 0.107 and 10.6 respectively, which was higher than the values of 0.167, 0.375, 0.063 and 7.6 respectively as obtained by using Indion NSSR resins under identical experimental conditions. The overall results indicate superior performance of Tulsion A-33 over Indion NSSR resin under identical operational parameters.
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29

Singare, P. U. "Non Destructive Application of Radioactive Tracer Isotopes for Performance Evaluation of Industrial Grade Anion Exchange Resins Tulsion A-33 and Indion NSSR". International Letters of Chemistry, Physics and Astronomy 18 (28.09.2013): 50–62. http://dx.doi.org/10.56431/p-68axxp.

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The present study deals with non-destructive application of radioactive tracer isotopes to evaluate the performance of Tulsion A-33 (nuclear grade) and Indion NSSR (non-nuclear grade) anion exchange resins. The performance evaluation was done by carrying out the iodide and bromide ion-isotopic exchange reactions using the above resins. It was observed that at a constant temperature of 40.0 °C, as the concentration of labeled iodide ion solution increases 0.001 M to 0.004 M, the percentage of iodide ions exchanged increases from 58.0% to 64.0% for Tulsion A-33 resins; and from 48.4% to 50.8% for Indion NSSR resins. Similarly in case of bromide ion-isotopic exchange reaction under identical experimental conditions, the percentage of bromide ions exchanged increases from 45.6% to 50.4% for Tulsion A-33 resin; and from 39.8% to 44.6% for Indion NSSR resin. It was also observed that during iodide ion-isotopic exchange reaction at 40.0 °C, using 1.000 g of ion exchange resins and 0.003 M labeled ionic solution, using Tulsion A-33 resin the values of specific reaction rate (min-1), amount of iodide ion exchanged (mmol), initial rate of iodide ion exchange (mmol/min) and log Kd were 0.229, 0.469, 0.107 and 10.6 respectively, which was higher than the values of 0.167, 0.375, 0.063 and 7.6 respectively as obtained by using Indion NSSR resins under identical experimental conditions. The overall results indicate superior performance of Tulsion A-33 over Indion NSSR resin under identical operational parameters.
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30

Singare, P. U. "Comparative Study of Anion Exchange Resins Purolite NRW-6000 and Duolite A-143 by Application Isotopic Technique". International Letters of Chemistry, Physics and Astronomy 17 (wrzesień 2013): 1–13. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.17.1.

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Isotopic tracer technique using 131I and 82Br was used to characterize Purolite NRW-6000 and Duolite A-143 anion exchange resins. The characterization study was done by carrying out iodide and bromide ion-isotopic exchange reactions taking place between the resin surface and the external labeled ionic solution. For the two resins it was observed that under identical experimental conditions, the values of specific reaction rate (min-1), amount of ion exchanged (mmol) and initial rate of ion exchange (mmol/min) were calculated to be lower for bromide ion-isotopic exchange reaction than that for iodide ion-isotopic exchange reaction. Also during both the ion-isotopic exchange reactions, under identical experimental conditions for the two resins, the values of specific reaction rate increases with increase in ionic concentration and was observed to decrease with rise in temperature. For a constant temperature of 35.0 °C, as the concentration of labeled bromide ion solution increases from 0.001 mol/L to 0.004 mol/L, the percentage of bromide ions exchanged increases from 67.80% to 72.76% using Purolite NRW-6000 resin and from 42.54% to 50.45% using Duolite A-143 resin. However when the temperature was raised from 30.0 °C to 45.0 °C by keeping the concentration of labeled bromide ion solution constant at 0.002 mol/L, the percentage of bromide ions exchanged decreases from 70.68 % to 67.32 % using Purolite NRW-6000 resin and from 47.50% to 42.25% using Duolite A-143 resin. From the results it appears that Purolite NRW-6000 resins show superior performance over Duolite A-143 resins under identical experimental conditions. It is expected that the present isotopic tracer technique can be applied further as an efficient nondestructive technique in characterization of various ion exchange resins so as to bring about their efficient industrial applications.
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31

Singare, P. U. "Comparative Study of Anion Exchange Resins Purolite NRW-6000 and Duolite A-143 by Application Isotopic Technique". International Letters of Chemistry, Physics and Astronomy 17 (7.09.2013): 1–13. http://dx.doi.org/10.56431/p-0x5o7d.

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Isotopic tracer technique using 131I and 82Br was used to characterize Purolite NRW-6000 and Duolite A-143 anion exchange resins. The characterization study was done by carrying out iodide and bromide ion-isotopic exchange reactions taking place between the resin surface and the external labeled ionic solution. For the two resins it was observed that under identical experimental conditions, the values of specific reaction rate (min-1), amount of ion exchanged (mmol) and initial rate of ion exchange (mmol/min) were calculated to be lower for bromide ion-isotopic exchange reaction than that for iodide ion-isotopic exchange reaction. Also during both the ion-isotopic exchange reactions, under identical experimental conditions for the two resins, the values of specific reaction rate increases with increase in ionic concentration and was observed to decrease with rise in temperature. For a constant temperature of 35.0 °C, as the concentration of labeled bromide ion solution increases from 0.001 mol/L to 0.004 mol/L, the percentage of bromide ions exchanged increases from 67.80% to 72.76% using Purolite NRW-6000 resin and from 42.54% to 50.45% using Duolite A-143 resin. However when the temperature was raised from 30.0 °C to 45.0 °C by keeping the concentration of labeled bromide ion solution constant at 0.002 mol/L, the percentage of bromide ions exchanged decreases from 70.68 % to 67.32 % using Purolite NRW-6000 resin and from 47.50% to 42.25% using Duolite A-143 resin. From the results it appears that Purolite NRW-6000 resins show superior performance over Duolite A-143 resins under identical experimental conditions. It is expected that the present isotopic tracer technique can be applied further as an efficient nondestructive technique in characterization of various ion exchange resins so as to bring about their efficient industrial applications.
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32

Moosavi, K., S. Setayeshi, M. G. Maragheh, S. Javadahmad, M. R. Kardan i S. Nosrati. "Synthesis and Ion-Exchange Properties of Inorganic Ion Exchanger Zirconium Phosphate". Journal of Applied Sciences 9, nr 11 (15.05.2009): 2180–84. http://dx.doi.org/10.3923/jas.2009.2180.2184.

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33

SHIBATA, Junji, Tadashi TANAKA i Yoshinari BABA. "Ion Exchange Property of Metal Ions by Chitosan Based Ion-exchanger." RESOURCES PROCESSING 39, nr 1 (1992): 8–14. http://dx.doi.org/10.4144/rpsj1986.39.8.

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34

Moon, Jei-Kwon, Eil-Hee Lee, Yoon-Ju Han, Byung-Chul Lee i Hyung-Tae Kim. "Multi-component ion exchange kinetics with PAN-KCoFC composite ion exchanger". Korean Journal of Chemical Engineering 22, nr 1 (styczeń 2005): 127–32. http://dx.doi.org/10.1007/bf02701474.

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35

Dubey, N. B., i H. K. Bagla. "Ion-exchange studies of 110mAg(I) using synthetic inorganic ion-exchanger". Journal of Radioanalytical and Nuclear Chemistry 274, nr 2 (10.07.2007): 271–76. http://dx.doi.org/10.1007/s10967-007-1110-4.

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36

Singare, P. U. "Nondestructive Radioactive Tracer Technique in Characterization of Anion Exchange Resins Purolite NRW-8000 and Duolite A-368". International Letters of Chemistry, Physics and Astronomy 17 (wrzesień 2013): 14–27. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.17.14.

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Radioactive tracer isotopes 131I and 82Br were used to characterize anion exchange resins Purolite NRW-8000 and Duolite A-368 by application of nondestructive technique. The resin characterization was based on their performance during iodide and bromide ion-isotopic exchange reactions. It was observed that during the iodide ion-isotopic exchange reaction at a constant temperature of 40.0 °C, as the concentration of labeled iodide ion solution increases from 0.001 mol/L to 0.004 mol/L, the percentage of iodide ions exchanged increases from 62.10% to 68.10 % using Purolite NRW-8000 resins and from 44.20% to 46.80% using Duolite A-368 resins. Also at a constant temperature of 40.0 °C, 1.000 g of ion exchange resins and 0.003 mol/L labeled iodide ion solution, the values of specific reaction rate (min-1), amount of iodide ion exchanged (mmol), initial rate of iodide ion exchange (mmol/min) and log Kd were calculated as 0.260, 0.500, 0.130 and 11.8 respectively for Purolite NRW-8000 resin, which was higher than the respective values of 0.130, 0.345, 0.045 and 6.7 as that obtained for Duolite A-368 resins. The similar trend was observed for the two resins during bromide ion-isotopic exchange reaction. From the overall results it appears that under identical experimental conditions, Purolite NRW-8000 resins show superior performance over Duolite A-368 resins. It is expected here that the present nondestructive technique can be extended further for characterization of different industrial grade ion exchange resins, which will help in their selection for specific industrial application.
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37

Singare, P. U. "Nondestructive Radioactive Tracer Technique in Characterization of Anion Exchange Resins Purolite NRW-8000 and Duolite A-368". International Letters of Chemistry, Physics and Astronomy 17 (7.09.2013): 14–27. http://dx.doi.org/10.56431/p-96r7u1.

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Radioactive tracer isotopes 131I and 82Br were used to characterize anion exchange resins Purolite NRW-8000 and Duolite A-368 by application of nondestructive technique. The resin characterization was based on their performance during iodide and bromide ion-isotopic exchange reactions. It was observed that during the iodide ion-isotopic exchange reaction at a constant temperature of 40.0 °C, as the concentration of labeled iodide ion solution increases from 0.001 mol/L to 0.004 mol/L, the percentage of iodide ions exchanged increases from 62.10% to 68.10 % using Purolite NRW-8000 resins and from 44.20% to 46.80% using Duolite A-368 resins. Also at a constant temperature of 40.0 °C, 1.000 g of ion exchange resins and 0.003 mol/L labeled iodide ion solution, the values of specific reaction rate (min-1), amount of iodide ion exchanged (mmol), initial rate of iodide ion exchange (mmol/min) and log Kd were calculated as 0.260, 0.500, 0.130 and 11.8 respectively for Purolite NRW-8000 resin, which was higher than the respective values of 0.130, 0.345, 0.045 and 6.7 as that obtained for Duolite A-368 resins. The similar trend was observed for the two resins during bromide ion-isotopic exchange reaction. From the overall results it appears that under identical experimental conditions, Purolite NRW-8000 resins show superior performance over Duolite A-368 resins. It is expected here that the present nondestructive technique can be extended further for characterization of different industrial grade ion exchange resins, which will help in their selection for specific industrial application.
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38

Jiang, Jin He. "Study of the Inorganic Ion Exchanger Li3Mn0.25Ti0.5O3". Applied Mechanics and Materials 178-181 (maj 2012): 471–74. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.471.

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Inorganic ion exchanger (Li3Mn0.25Ti0.5O3) with an inverse spinel structure was synthesized by solid state reaction crystallization method. The results showed that the Li+ extraction/insertion be progressed mainly by an ion-exchange mechanism. The acid treated samples had an ion exchange capacity of 9.2mmol/g for Li+.
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39

Jiang, Jin He. "Synthesis of Li+ Memorized Spinel Li3Mn0.75O3 by a Solid State Reaction Crystallization Method". Applied Mechanics and Materials 178-181 (maj 2012): 475–78. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.475.

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The ion-exchanger Li3Mn0.75O3 of spinel type was prepared by a solid state reaction crystallization method. The results showed that the Li+ extraction/insertion be progressed mainly by an ion-exchange mechanism. The acid treated samples had an ion exchange capacity of 8.3mmol/g for Li+.
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40

Jiang, Jin He. "The Synthesis and Ion-Exchange Property of Li+ Memorized Spinel Li2Mn0.75Ti0.25O3". Advanced Materials Research 554-556 (lipiec 2012): 856–59. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.856.

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Inorganic ion exchanger Li2Mn0.75Ti0.25O3 is synthesized. It was prepared by a solid state reaction crystallization method. The results showed that the Li+ extraction/insertion be progressed mainly by an ion-exchange mechanism. The acid treated samples had an ion exchange capacity of 7.4 mmol•g-1 for Li+. It had a memorial ion-sieve property for Li+.
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41

SAITO, Kyoichi. "Ion-Exchange Resins." Journal of Ion Exchange 11, nr 2 (2000): 45–52. http://dx.doi.org/10.5182/jaie.11.45.

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42

Litvitsky, P. F. "Ion Exchange Disorders". Current pediatrics 14, nr 3 (25.08.2015): 349. http://dx.doi.org/10.15690/vsp.v14i3.1370.

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43

Tanaka, Yoshinobu, Seung-Hyeon Moon, Victor V. Nikonenko i Tongwen Xu. "Ion-Exchange Membranes". International Journal of Chemical Engineering 2012 (2012): 1–3. http://dx.doi.org/10.1155/2012/906952.

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44

Dyer, A. "Ion-exchange capacity". Microporous and Mesoporous Materials 22, nr 4-6 (styczeń 1998): 543–45. http://dx.doi.org/10.1016/s1387-1811(98)80020-6.

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45

Calmon, C. "Ion exchange technology". Reactive Polymers, Ion Exchangers, Sorbents 3, nr 2 (luty 1985): 159. http://dx.doi.org/10.1016/0167-6989(85)90058-3.

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Calmon, C. "Ion exchange membranes". Reactive Polymers, Ion Exchangers, Sorbents 3, nr 2 (luty 1985): 159–60. http://dx.doi.org/10.1016/0167-6989(85)90059-5.

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47

Dyer, A. "Ion-exchange processes". TrAC Trends in Analytical Chemistry 10, nr 1 (styczeń 1991): 7–8. http://dx.doi.org/10.1016/0165-9936(91)85037-r.

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Dyer, A. "Ion exchange technology". Endeavour 9, nr 1 (styczeń 1985): 58. http://dx.doi.org/10.1016/0160-9327(85)90022-5.

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49

Helfferich, Friedrich G. "Ion exchange advances". Reactive Polymers 18, nr 3 (grudzień 1992): 253. http://dx.doi.org/10.1016/0923-1137(92)90656-m.

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50

Bennett, G. F. "Ion exchange technology". Journal of Hazardous Materials 50, nr 2-3 (październik 1996): 246. http://dx.doi.org/10.1016/0304-3894(96)88838-8.

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