Academic literature on the topic 'Polyvalent metals'

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Journal articles on the topic "Polyvalent metals"

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Grosdidier, B., A. Ben Abdellah, and J. G. Gasser. "Experimental ordering potential of manganese-polyvalent metals." Journal of Non-Crystalline Solids 353, no. 32-40 (October 2007): 3069–73. http://dx.doi.org/10.1016/j.jnoncrysol.2007.05.068.

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Kiselev, A. I. "Dynamic characteristics of the melts of polyvalent metals." High Temperature 49, no. 3 (June 2011): 363–68. http://dx.doi.org/10.1134/s0018151x11030084.

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Kiselev, A. I., and V. I. Kononenko. "Correlation energy and the superconductivity of polyvalent metals." Russian Metallurgy (Metally) 2006, no. 4 (August 2006): 358–62. http://dx.doi.org/10.1134/s0036029506040148.

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Lai, S. K., P. J. Hsu, K. L. Wu, W. K. Liu, and M. Iwamatsu. "Structures of metallic clusters: Mono- and polyvalent metals." Journal of Chemical Physics 117, no. 23 (December 15, 2002): 10715–25. http://dx.doi.org/10.1063/1.1521128.

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Colinet, C., A. Bessoud, A. Pasturel, and P. Hicter. "On the partial excess entropies of transition metals in liquid polyvalent metals." Physica B+C 133, no. 2-3 (December 1985): 103–8. http://dx.doi.org/10.1016/0378-4363(85)90404-8.

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Gohil, D. R., P. N. Vyas, N. K. Bhatt, and P. R. Vyas. "Electrical Transport in Polyvalent Liquid Bismuth and Antimony Metals." Journal of Nano- and Electronic Physics 12, no. 2 (2020): 02032–1. http://dx.doi.org/10.21272/jnep.12(2).02032.

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Turaev, Abbaskhan Sabirkhanovich, and Al'bina Vasil'yevna Filatova. "INVESTIGATION OF THE PROCESS OF CHEMICAL CROSSLINKING OF NA-CMC POLYVALENT METAL IONS." chemistry of plant raw material, no. 4 (December 21, 2020): 93–100. http://dx.doi.org/10.14258/jcprm.2020046952.

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This article is devoted to the study of the Na-CMC structuring process under various conditions: structuring with polyvalent metal ions, structuring with polyvalent metal ions in the presence of polybasic acids. Structuring in a Na-CMC solution was investigated by adding polyvalent metal ions to it at various ratios Me+p / COO-, pH, which allowed us to characterize the structuring process as a reaction of macromolecules with low molecular weight compounds.It was found that the probability of intermacromolecular crosslinking, responsible for gelation, increases with an increase in the initial concentration of Na-CMC solution and with the additional presence of polybasic acids. When salts of polyvalent metals interact with solutions of polybasic acids in the presence of a 2N NaOH solution, their complex salts are formed.Titration calculations and IR spectra of dried salts confirmed the conclusion made about the formation of salts of structure I, II, III, IV. Crosslinking of Na-CMC has been shown to occur via compounds of the M2+ (3+) - OOS-R-type. It has been established that strong, transparent jellies are formed by trivalent metal ions, divalent metal ions also form brittle, cloudy jellies that stratify during a day.A suggestion has been made that the main reaction during gelation of the Na-CMC solution is the interaction of -COOH groups along the chain of the Na-CMC macromolecule with the Al+3 salt and citric acid of structure III. The role of citric acid is that it is a transverse bridge in the binding of Na-CMC macromolecules. During the process of chemical crosslinking, the system turns from a fluid state into a non-fluid one, and the dynamic viscosity of the system increases from 3.548 Pa·s to 1585 Pa·s.
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Jank, W., and J. Hafner. "Trends in the electronic structure of the polyvalent liquid metals." Journal of Non-Crystalline Solids 117-118 (February 1990): 304–7. http://dx.doi.org/10.1016/0022-3093(90)90938-i.

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Bhuiyan, G. M., and Fysol Ibna Abbas. "Local minimum in pair potentials of polyvalent metals: A limitation of pseudopotential theory." International Journal of Modern Physics B 33, no. 07 (March 20, 2019): 1950049. http://dx.doi.org/10.1142/s0217979219500498.

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Local minimum appearing in the interionic pair potentials, when derived from local model pseudopotential, for Al (and some other polyvalent metals) remains as a long standing problem of clear understanding of its origin, although some attempts have been made by a few authors. The origin of this feature of local minimum is systematically investigated for the first time in this paper considering both the core size and the conduction electron density as variables. Interionic pair potential is derived from Ashcroft’s empty core model because it depends on these two variables only. Results of this investigation show monovalent metals do not exhibit a local minimum at all but trivalent Al and some other polyvalent metals do exhibit at their normal densities. Here, the combined effect of the core size and the conduction electron density results whether the local minimum will appear or not. More interestingly, for smaller core size, conduction electron density plays major role and for larger core size the core radius plays the major role in determining the depth of the local minimum.
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Yokoyama, I., and S. Ono. "Effective interatomic pair potentials in liquid polyvalent metals from observed structure data." Journal of Physics F: Metal Physics 15, no. 6 (June 1985): 1215–28. http://dx.doi.org/10.1088/0305-4608/15/6/008.

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Dissertations / Theses on the topic "Polyvalent metals"

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Гринь, Григорий Иванович, Павел Анатольевич Козуб, Евгений Александрович Семенов, and Ольга Викторовна Коробец. "Очистка сточных вод от соединений поливалентных металлов." Thesis, Дніпродзержинський державний технічний університет, 2002. http://repository.kpi.kharkov.ua/handle/KhPI-Press/30232.

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Установлено, что осаждение поливалентных металлов может быть описан относительно стабильными кривыми, близкими к границам зон диаграммы Пурбе‚ однако в настоящее время отсутствуют методы прогнозирования кривых осаждения для различных металлов.
It has been found that the deposition of polyvalent metals can be described by relatively stable curves close to the boundaries of the zones of the Purbe diagram, but at present there are no methods for predicting deposition curves for various metals.
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Amira, Sami. "Classical and Car-Parrinello Molecular Dynamics Simulations of Polyvalent Metal Ions in Water." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5742.

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Chaïb, Cheikh GASSER J. G. "CONTRIBUTION A L'ETUDE DES PROPRIETES ELECTRONIQUES D'ALLIAGES METALLIQUES LIQUIDES DE TYPE METAL NOBLE (OU DE TRANSITION)-POLYVALENT /." [S.l.] : [s.n.], 1987. ftp://ftp.scd.univ-metz.fr/pub/Theses/1987/Chaib.Cheikh.SMZ8708.pdf.

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Lin, Wen-De, and 林文德. "Thermal stability of metallic clusters: mono- and polyvalent metals." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/83793651914138095440.

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碩士
國立中央大學
物理研究所
91
The Brownian-type molecular dynamics simulation is re-visited and applied to study the thermal and geometric properties of four mono- and two polyvanent metallic clusters. For the thermal property, we report the specific heat at constant volume and study the solidlike-liquidlike transition by scrutinizing the characteristic of Cv For the geometric property, we calculate the relative root mean square bond-length fluctuation delta as a function of increasing temperature. The thermal change in delta reflects the movement of atoms and hence is a relevant parameter in understanding the phase transition in clusters. The simulated results for the Cv of alkali and aluminium clusters whose ground state structures exhibit icosahedral generally show one phase transition. In contrast, the tetravalent lead, even if predicted to be icosahedral at T=0 K, displays two phase transitions, a pre-melting process before undergoing the pregressive melting. In connection with the latter scenario, it is found here that those clusters identified to be lesser stable according to the second energy difference can qualitatively be classified to be the clusetrs with the possibility of undergoing pre-melting process. To delve further into the thermal behavior of clusters, we have analyzed also the thermal variation of delta(T) and attempted to correlate it with Cv(T). It turns out that the pre-melting or/and melting temperature of a cluster extracted from Cv do not always agree quantitatively with that drawing from delta . This implies that a quantitative understanding of the phase transformation in microstructures will need further effort to search for more useful cluster parameters.
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Book chapters on the topic "Polyvalent metals"

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Solheim, Asbjørn. "Polyvalent Impurities and Current Efficiency in Aluminium Cells: A Model Concerning Electrochemical Short Circuiting." In Light Metals 2016, 371–76. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119274780.ch61.

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Solheim, Asbjørn. "Polyvalent Impurities and Current Efficiency in Aluminium Cells: A Model Concerning Electrochemical Short Circuiting." In Light Metals 2016, 371–76. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48251-4_61.

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Spychaj, T., and A. Bartkowiak. "Composite Hydrogels of the Polysaccharide / Polyvalent Metal Type." In Aqueous Organometallic Chemistry and Catalysis, 211–13. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0355-8_21.

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Butz, T., U. Klapp, and A. Lerf. "Polyvalency in post transition metal intercalation compounds of 2H-TaS2: a TDPAC study." In Chemical Physics of Intercalation, 403–9. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-9649-0_29.

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"New Class of Flocculants and Coagulants." In Materials Research Foundations, 219–52. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901144-7.

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Coagulation is a kind of efficient water treatment method commonly used in domestic anhydrous and industrial wastewater treatment. Inorganic polymer coagulants (polyvalent metal salts) are widely used because of their low cost and ease of use. However, due to the low flocculation effectiveness and the presence of residual metal concentrations in the treated water, their application is limited. Organic synthetic flocculant has been widely used due to its higher flocculation efficiency at lower dosage. However, it has limitations in applicability due to its molecular structure which is less biodegradable and less disperse in water. Therefore, flocculants based on natural polymers have attracted extensive attention from researchers due to their advantages such as biodegradability and environmental friendliness. This paper summarizes the overview of the development of various types of flocculants that were used for industrial wastewater treatment. In addition, the characteristics and application of flocculant is reviewed with their behavior.
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"New Class of Flocculants and Coagulants." In Materials Research Foundations, 219–52. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901151-7.

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Coagulation is a kind of efficient water treatment method commonly used in domestic anhydrous and industrial wastewater treatment. Inorganic polymer coagulants (polyvalent metal salts) are widely used because of their low cost and ease of use. However, due to the low flocculation effectiveness and the presence of residual metal concentrations in the treated water, their application is limited. Organic synthetic flocculant has been widely used due to its higher flocculation efficiency at lower dosage. However, it has limitations in applicability due to its molecular structure which is less biodegradable and less disperse in water. Therefore, flocculants based on natural polymers have attracted extensive attention from researchers due to their advantages such as biodegradability and environmental friendliness. This paper summarizes the overview of the development of various types of flocculants that were used for industrial wastewater treatment. In addition, the characteristics and application of flocculant is reviewed with their behavior.
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Mitchenko, Tatyana, Paul Stender, and Natalya Makarova. "Optimization Of Sorption Purification Of Industrial Effluents, Waste Waters And Technological Solutions From Polyvalent Metal Ions." In Ion Exchange. CRC Press, 1999. http://dx.doi.org/10.1201/9780203908341.ch2.

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Conference papers on the topic "Polyvalent metals"

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Fomin, N. V. "Interpretation of P-V isoterms of polyvalent metals in terms of the pseudo-potential model." In International Workshop on New Approaches to High Tech Materials: Nondestructive Testing and Computer Simulations in Materials Scienc, edited by Alexander I. Melker. SPIE, 1998. http://dx.doi.org/10.1117/12.299578.

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Reports on the topic "Polyvalent metals"

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Akdeniz, Z., and M. P. Tosi. Stability diagrams for fourfold coordination of polyvalent metal ions in molten mixtures of halide salts. Office of Scientific and Technical Information (OSTI), November 1988. http://dx.doi.org/10.2172/6060227.

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