Littérature scientifique sur le sujet « Organic reductants »
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Articles de revues sur le sujet "Organic reductants"
Irmeilyana, Irmeilyana, Ngudiantoro Ngudiantoro, Sri Indra Maiyanti et Siddiq Makhalli. « LOGISTIC REGRESSION MODELING OF REDUCTANT HERBICIDE IN PAGARALAM COFFEE FARMING ». BAREKENG : Jurnal Ilmu Matematika dan Terapan 17, no 4 (18 décembre 2023) : 1957–68. http://dx.doi.org/10.30598/barekengvol17iss4pp1957-1968.
Texte intégralPerez-Benito, Joaquin F., et Conchita Arias. « A kinetic study on the reactivity of chromium(IV) ». Canadian Journal of Chemistry 71, no 5 (1 mai 1993) : 649–55. http://dx.doi.org/10.1139/v93-087.
Texte intégralMukhammadiev, Komil, Dilrabo Mukhammadieva, Akhan Demeuov et Inoyatkhan Tuichyeva. « Disposal of highly toxic waste chromium solutions ». E3S Web of Conferences 531 (2024) : 04010. http://dx.doi.org/10.1051/e3sconf/202453104010.
Texte intégralKipp, Brian H., Chadi Faraj, Guoliang Li et David Njus. « Imidazole facilitates electron transfer from organic reductants ». Bioelectrochemistry 64, no 1 (août 2004) : 7–13. http://dx.doi.org/10.1016/j.bioelechem.2003.12.010.
Texte intégralIrmeilyana, Irmeilyana, Ngudiantoro Ngudiantoro, Sri Indra Maiyanti et Indrike Febriyanti. « Correspondence Analysis to Know Factors Related to the Use of Reducant Herbicide on Pagaralam Coffee Farmers ». Pattimura International Journal of Mathematics (PIJMath) 1, no 2 (1 novembre 2022) : 69–80. http://dx.doi.org/10.30598/pijmathvol1iss2pp69-80.
Texte intégralBeagan, Daniel M., Veronica Carta et Kenneth G. Caulton. « A reagent for heteroatom borylation, including iron mediated reductive deoxygenation of nitrate yielding a dinitrosyl complex ». Dalton Transactions 49, no 5 (2020) : 1681–87. http://dx.doi.org/10.1039/d0dt00077a.
Texte intégralDoyle, Michael P., et Yong-Liang Su. « Application of α-Aminoalkyl Radicals as Reaction Activators ». Synthesis 54, no 03 (3 novembre 2021) : 545–54. http://dx.doi.org/10.1055/a-1685-2853.
Texte intégralIrmeilyana, Irmeilyana, Ngudiantoro Ngudiantoro et Sri Indra Maiyanti. « REGRESSION MODEL ON PAGARALAM COFFEE FARMERS’ INCOME WITH THE INFLUENCE OF THE USE OF HERBICIDE REDUCTANT VARIABLE ». BAREKENG : Jurnal Ilmu Matematika dan Terapan 16, no 2 (1 juin 2022) : 409–20. http://dx.doi.org/10.30598/barekengvol16iss2pp409-420.
Texte intégralYuan, Tao, Meifang Zheng, Markus Antonietti et Xinchen Wang. « Ceramic boron carbonitrides for unlocking organic halides with visible light ». Chemical Science 12, no 18 (2021) : 6323–32. http://dx.doi.org/10.1039/d1sc01028j.
Texte intégralGuo, Wei, Yongbin Zhang et Guofu Zhou. « Tetrahydropyrimidine Derivatives as Efficient Organic Reductants for Transfer Hydrogenation ». HETEROCYCLES 78, no 6 (2009) : 1541. http://dx.doi.org/10.3987/com-08-11603.
Texte intégralThèses sur le sujet "Organic reductants"
Zuluaga, Villamil Maria Alejandra. « New routes for activation of transition metal complexes : Generation of low valent metal species for catalysis using organic reductants ». Electronic Thesis or Diss., Lyon, École normale supérieure, 2024. http://www.theses.fr/2024ENSL0006.
Texte intégralThe first objective of this thesis is to develop and rationalize the use of organic reducing agents for the synthesis of low-valent organometallic complexes. More precisely, this thesis evaluates the potential of organosilylated reductants for the controlled reduction of organometallic complexes based on Ti and W involved in the ethylene oligomerization reaction, a very important reaction at the industrial scale, and source of numerous mechanistic debates. To answer these questions, cyclic voltammetry experiments were carried out to study the redox properties of these systems. The impact of external factors such as temperature and solvent on the redox potential was also examined. Alongside this experimental approach, DFT calculations completed this work to anticipate the value of this redox potential for a whole range of organic reductants. In a second objective, the synthesis of W(IV) and Ti(II) complexes was specifically addressed in particular to (i)- elucidate the reactivity of W(IV) complexes in ethylene oligomerization (Cossee-Arlman or metallacycle mechanism), and (ii)- propose new routes for the synthesis of cationic Ti(II) complexes which would not use MAO (methylaluminoxane), a poorly defined co-catalyst yet commonly used in oligomerization. This thesis work thus lays the foundations for a rational use of organic reducers and their implementation in catalysis
Cushman, Christopher Scott. « Destruction of chlorinated hydrocarbons by zero-valent zinc and bimetallic zinc reductants in bench-scale investigations ». Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1398342299.
Texte intégralMork, Anna Jolene. « Novel reactions of a neutral organic reductant : reductive coupling and nanoparticle synthesis ». Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73438.
Texte intégralVita. Cataloged from PDF version of thesis.
Includes bibliographical references (p. 53-55).
A recently developed bis-pyridinylidene neutral organic electron donor captured our interest as a potential source of new chemistries for reductive coupling and the synthesis of group IV nanoparticles. This super electron donor was used as a co-reductant for nickel-catalyzed reductive coupling of aryl halides in order for the reaction to be homogeneous and avoid the traditional co-reductant, zinc, previously reported for these Yamamoto-type dehalogenative couplings. Reductive coupling was somewhat successful for specific substrates, including 4- bromoanisole and 2,5-dibromothiophene, but competing hydrodehalogenation of the aryl halide was problematic for both expanding the substrate scope and increasing the length of the polymers generated from this reaction. The attempt to synthesize silicon and germanium nanoparticles from reduction of the corresponding tetrachloride precursors using this super organic electron donor met limited success. Dimerization of silicon species occurred, but there was little conclusive evidence of nanoparticle formation. Finally, in a brief side-project to explore other applications of the organic reductant, the molecule was shown to successfully n-dope both p-type and n-type organic electronic materials.
by Anna Jolene Mork.
S.M.
Robescu, Marina Simona. « Discovery and characterization of new Ene-reductases ». Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3426346.
Texte intégralSette nuove ene-reduttasi putative sono state identificate attraverso mezzi bioinformatici con un approccio di “genome mining” da diversi organismi: Galdieria sulphuraria (GsOYE), Chroococcidiopsis thermalis (CtOYE), Chloroflexus aggregans (CaOYE), Botryotinia fuckeliana (BfOYE1 and BfOYE4) e Aspergillus niger (AnOYE2 and AnOYE8). In particolare gli organismi fotosintetici (Galdieria, Chroococcidiopsis e Chloroflexus) e i fungi (Botryotinia e Aspergillus) sono, ad oggi, fonti di ene-reduttasi rimaste inesplorate. Per il clonaggio e l’espressione di tutte e sette le sequenze codificanti le proteine di interesse è stata utilizzata una strategia comune. Inizialmente tutte le proteine sono state espresse utilizzando come ospite E. coli BL21(DE3); con questa strategia, però, sovraespressione e buona solubilità sono state ottenute solo per quattro delle sette proteine, GsOYE, CtOYE, CaOYE e BfOYE1. Per le altre tre proteine è stata necessaria un’ulteriore ottimizzazione. La bassa solubilità di AnOYE2 e AnOYE8 e la scarsa espressione di BfOYE4 sono state affrontate utilizzando diverse strategie, come la diminuzione della temperatura e l’utilizzo di chaperonine ma anche l’utilizzo di altri ospiti per l’espressione proteica (P. pastoris). Per tutte e sette le proteine ricombinanti è stata condotta una caratterizzazione biocatalitica. Una volta dimostrata la loro attività come ene-reduttasi in vitro, sono stati determinati anche i parametri cinetici per i substrati preferiti da ciascun enzima. Nel laboratorio del Professor Kurt Faber dell’Università di Graz, sono state messe a punto bioconversioni per i due enzimi GsOYE e CtOYE, al fine di capirne il profilo di selettività nei confronti di substrati standard. Infine, è stata condotta anche una caratterizzazione biochimica che ha permesso di determinare la stabilità termica e la tolleranza a diversi pH dei nuovi enzimi identificati; per i quali è stata anche ottenuta la struttura tridimensionale. Nella tesi è discusso l’utilizzo degli enzimi nell’isomerizzazione NADH-indipendente di substrati con legami C=C non attivati e la loro successiva riduzione, così come gli sforzi per chiarire il meccanismo d’azione di questa nuova reattività scoperta solo di recente. Il lavoro presentato ha portato alla scoperta di nuove ene-reduttasi, ampliando così il pannello dei biocatalizzatori disponibili per la riduzione del doppio legame C=C ma anche per reattività biocatalitiche inaspettate.
Mudgal, Mukesh M. Dr. « Insight Into the Inhibition of Ribonucleotide Reductases by 2'-chloro-2'-deoxynucleotides and 2'-azido-2'-deoxynucleotides : Biomimetic Studies with Model Substrates ». FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2597.
Texte intégralDang, Thao P. « Biomimetic Modeling of the Nitrogen-centered Radical Postulated to occur during the Inhibition of Ribonucleotide Reductases by 2'-Azido-2'-deoxynucleotides ». FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/318.
Texte intégralElatawy, M. A. K. « SYNTHESIS OF NITROGEN HETEROCYCLES BY INTRAMOLECULAR CYCLIZATION OF ALPHA, BETA-UNSATURATED NITRO COMPOUNDS, CATALYZED BY PALLADIUM COMPLEXES AND WITH CARBON MONOXIDE AS THE REDUCTANT ». Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/331319.
Texte intégralDai, Ren-Tai, et 戴仁泰. « Reclamation of heavy metals contaminated soils using chemical reductant combined with dissolved organic carbon solution ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/64457376737395961116.
Texte intégral國立宜蘭大學
環境工程學系碩士班
103
Illegal discharges of untreated wastewaters from electroplating and electronics factories have been found causing serious contamination of croplands with toxic metals in Taiwan. Though acid washing is a highly efficient method to clean the metals away a soils, it always causes clear loss of fertility. In addition, sometimes it’s difficult to decline the concentrations of toxic metals below the control threshold using traditional acid washing and dissolved organic carbon (DOC) washing, when treating a severely polluted soil. In this study, chemical reductants were employed to dissolve the surfaces of Fe and Mn oxides for more release of the toxic metals under a moderate-acid condition. Soil samples, containing high concentrations of Cr, Cu, Zn, Ni, Cd, and Pb, as well as nine reductants, including sodium thiosulfate, sodium bisulfite, hydroxylamine sulfate, hydroxylamine hydrochloride, stannous chloride, vitamin C, sodium dithionite, sodium sulfite, and ferrous chloride, were collected and used to conduct experiments of soil washing. The DOC solution, extracting form the waste distillery sludge, served as a second washing reagent. It was believed that DOC would encourage the removal of toxic metals and take off the reductants remained in soil through previous washing. The factors affecting the removals of metals, including pH, the concentration of a chemical reducing agent, DOC concentration of the solution, the solid-liquid ratio, reaction time, temperature, soaking time and other parameters were examined in this study. Variations in soil fertility during the washing were also examined. Approximately 54.4, 53.7, 16.8, and 3.6 % of Cu, Ni, Zn, and Cr were respectively removed from a soil, which contaminated with Cu (367 ppm), Ni (352 ppm), Zn (712 ppm), and Cr (257 ppm), through the “0.6 M FeSO4+DOC” treatment at pH 2.0; the result accomplished the purpose of remediation. Another soil with higher contents of metals, Cu (502 ppm), Ni (413 ppm), Zn (712 ppm), and Cr (336 ppm), could be remediated well by “0.2 M Na2S2O4+ DOC” treatment; about 84.8% (Cu), 45.3% (Ni), 23.4% (Zn), 30.1% (Cr) were removed from the soil. After washing with 0.2 M Na2S2O4 / DOC mixture or 0.6 M FeSO4 / DOC mixture, Cd contents in topsoil and subsoil were declined from 21.5 and 19.9 ppm to 3.4 and 4.3 ppm, respectively; this result also met the control standard. However, the Pb contentsl were decreased from 5340 to 2173 and 2652 ppm by treating with 0.2 M Na2S2O4 / DOC mixture and 0.6 M FeSO4 / DOC mixture, respectively; this might be due to its high original content of Pb and the result did not met the control standard (500 ppm). To summarize the changes in fertility during DOC washing with various reagents: the average increase in organic matter content was 15%; available ammonium (NH4+-N) content was 3.9 times; and exchangeable K was 33%. The average decreases in available phosphorus, exchangeable Ca, and exchangeable Mg contents were 10%, 11%, and 10%, respectively. This indicates that most fertility can be reserved by the DOC washing.
Chapitres de livres sur le sujet "Organic reductants"
Gompper, K. « Alternative Organic Reductants for Denitration ». Dans Denitration of Radioactive Liquid Waste, 32–46. Dordrecht : Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-011-9757-1_3.
Texte intégralStone, Alan T. « Adsorption of Organic Reductants and Subsequent Electron Transfer on Metal Oxide Surfaces ». Dans ACS Symposium Series, 446–61. Washington D.C. : American Chemical Society, 1987. http://dx.doi.org/10.1021/bk-1987-0323.ch021.
Texte intégralHayat, Tahir, Wen Xia, Yan He, Haizhen Wang, Jianjun Wu et Jianming Xu. « Humic Substances as a Reductant for Hydrophobic Organic Compounds ». Dans Functions of Natural Organic Matter in Changing Environment, 641–45. Dordrecht : Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5634-2_116.
Texte intégralSimon, Helmut, Helmut Günther, Johann Bader et Stefan Neumann. « Chiral Products from Non-Pyridine Nucleotide-Dependent Reductases and Methods for NAD(P)H Regeneration ». Dans Ciba Foundation Symposium 111 - Enzymes in Organic Synthesis, 97–111. Chichester, UK : John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720929.ch8.
Texte intégralFlowers, R. A. II, T. V. Chciuk et C. O. Bartulovich. « 2.2 Samarium-Mediated Reductions ». Dans Free Radicals : Fundamentals and Applications in Organic Synthesis 2. Stuttgart : Georg Thieme Verlag KG, 2021. http://dx.doi.org/10.1055/sos-sd-233-00001.
Texte intégralSumida, Y., et H. Ohmiya. « 4.4.23.7 Silylmethyl Anions (Update 2022) ». Dans Knowledge Updates 2022/3. Stuttgart : Georg Thieme Verlag KG, 2022. http://dx.doi.org/10.1055/sos-sd-104-00799.
Texte intégralBarlow, Stephen, Seth R. Marder, Xin Lin, Fengyu Zhang et Antoine Kahn. « Electrical Doping of Organic Semiconductors with Molecular Oxidants and Reductants ». Dans Conjugated Polymers, 21–43. CRC Press, 2019. http://dx.doi.org/10.1201/9780429190520-2.
Texte intégralKobayashi, Shu. « Tin Lewis acid ». Dans Lewis Acid Reagents, 137–57. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198500995.003.0007.
Texte intégralJose, Jerin, Raj Kamal Singh et Ligy Philip. « Pulsed power technology for water and wastewater treatment ». Dans Technological Solutions for Water Sustainability : Challenges and Prospects, 133–44. IWA Publishing, 2023. http://dx.doi.org/10.2166/9781789063714_0133.
Texte intégral« Imine Reductases ». Dans Biocatalysis in Organic Synthesis, sous la direction de Faber, Fessner et Turner. Stuttgart : Georg Thieme Verlag, 2015. http://dx.doi.org/10.1055/sos-sd-215-00205.
Texte intégralActes de conférences sur le sujet "Organic reductants"
Patel, J. « Role of Plasma-Induced Liquid Chemistry for the Reduction Mechanism of Silver Ions to form Silver Nanostructures ». Dans Functional Materials and Applied Physics. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901878-7.
Texte intégralZehnle, H. S., R. Laso Pérez, A. Boetius et G. Wegener. « Thermophilic Archaea Activate Liquid Alkanes Using Divergent Methyl-Coenzyme M Reductases ». Dans 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134206.
Texte intégralMachado, Serly Santiago, Enesio Rodriguez Nascimento Neto, Elisa Teshima, Osmar Calderon Sanchez, Heiddy Marquez Alvarez, Ivan Sergio Colás Gonzáles, Luis Fernando Pascholati Gusmão et Angélica Maria Lucchese. « Screening of keto reductases expressed in conidial fungi from the Brazilian semi-arid region ». Dans 14th Brazilian Meeting on Organic Synthesis. São Paulo : Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0050-1.
Texte intégralMikheykin, S. V., P. P. Poluektov, S. L. Khrabrov, A. Yu Smirnov et V. P. Simonov. « D&D Experience in VNIINM ». Dans ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4769.
Texte intégralNewburry, Don, Pat Runnels et Mike Owings. « Selective Catalytic Reduction (SCR) System Installation and Commissioning at the Chow II Power Plant in Chowchilla, California ». Dans ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0594.
Texte intégralPaviet-Hartmann, Patricia, Ana Nunez Gomez-Aleixandre, Joshua Pak, Amparo Glez Espartero, Frederic Poineau, Amber Wright, Edward Mausolf et Kenneth R. Czerwinski. « Extraction of Technetium as [Tc(II)(NO)(AHA)2H2O]+ Species in the UREX Process ». Dans 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75509.
Texte intégralRapports d'organisations sur le sujet "Organic reductants"
White, T. L., B. J. Wiedenman, D. P. Lambert, S. L. Crump, F. F. Fondeur, A. E. Papathanassiu, W. K. Kot et I. L. Pegg. Organics Characterization Of DWPF Alternative Reductant Simulants, Glycolic Acid, And Antifoam 747. Office of Scientific and Technical Information (OSTI), octobre 2013. http://dx.doi.org/10.2172/1107775.
Texte intégralStone, A. T. Release of oxide-bound toxic metals by naturally-occurring and contaminant-derived organic compounds : The role of complexant, reductant, and adsorptive characteristics. Final report, July 1, 1994--June 31, 1997. Office of Scientific and Technical Information (OSTI), décembre 1997. http://dx.doi.org/10.2172/353369.
Texte intégral