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Kovaleva E. G. Molochnikov L. S. Kharchuk V. G. Kuznetsova O. V. Shishmakov A. B. Yanchenko M. Yu. Buldakova L. Yu. Zhdanov I. N. Mikushina Yu. V. Petrov L. A. 《Kinetics and Catalysis》2004,45(5):752-758
The distribution of Cu2+ ions in ZrO2 and sulfated ZrO2 hydrogel phases was studied by EPR spectroscopy and voltammetry. The formation of the following three types of copper structures was observed: mononuclear Cu2+ complexes (A), magnetic associates (B), and Cu2+ compounds (C) that gave no EPR signals under the conditions used in the spectroscopic measurements. The specific catalytic activity of various Cu2+ compounds in the liquid-phase reaction of 2,3,5-trimethyl-1,4-hydroquinone oxidation was determined. The copper complexes C were found to exhibit the highest catalytic activity. 相似文献
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V. G. Kharchuk L. Yu. Buldakova A. B. Shishmakov O. V. Kuznetsova E. G. Kovaleva O. V. Koryakova L. S. Molochnikov M. Yu. Yanchenko L. A. Petrov 《Russian Journal of General Chemistry》2004,74(1):101-104
Liquid-p[hase oxidative dehydrogenation of 2,3,5-trimethyl-1,4-hydroquinone in the presence of titanium dioxide hydrogel was studied by a kinetic method. Associative interactions between the substrate, oxidant, and gel were detected by voltammetry and ESR and IR spectroscopy. 相似文献
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O. N. Chupakhin Yu. N. Sheinker Z. V. Pushkareva V. A. Trofimov E. G. Kovalev V. G. Kharchuk 《Chemistry of Heterocyclic Compounds》1973,9(4):493-495
It was established by electronic and IR spectroscopy that 9-aminoarylacridines and their acyl derivatives exist exclusively in the amino form in the crystalline state and in solutions.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 535–538, April, 1973. 相似文献
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Yu. V. Mikushina A. B. Shishmakov V. V. Matskevich N. A. Zhuravlev O. V. Koryakova V. G. Kharchuk L. A. Petrov 《Russian Journal of Inorganic Chemistry》2008,53(10):1557-1560
Silica/titania binary xerogels were prepared by joint hydrolysis of the ingredients. Gels of various compositions were characterized by 1H NMR spectroscopy, IR spectroscopy, and thermogravimetry. The spectral characteristics of binary systems differ considerably from mere superposition of the spectra of the two constituent compounds and the spectrum of a mechanical mixture. A feasibility was demonstrated for controlling the acid properties of binary oxide gels via varying the component mole ratio. 相似文献
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