Heteropoly Acids as Oxidation Catalysts in Synthesis of K-Vitamins Full article
Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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Output data | Year: 1996, Volume: 114, Number: 1-3, Pages: 151-160 Pages count : 10 DOI: 10.1016/S1381-1169(96)00313-5 | ||
Tags | K- vitamins, Mechanism, Mo-V-phosphoric heteropoly acids, Oxidation catalysis, Selectivity, Synthesis | ||
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Abstract:
Mo-V-phosphoric heteropoly acids of the Keggin structure H3 + nPMo12−nVnO40 (HPA-n) and their acidic salts were found to be efficient catalysts for 2-methyl-1-naphthol (MN) oxidation by dioxygen to 2-methyl-1,4-naphthoquinone (menadione, or vitamin K3). The reaction occurs in two steps: (1) HPA-n reduction by MN followed by the product isolation; (2) HPA-n regeneration by dioxygen. For reaction MN + HPA-n, carried out in a two-phase ‘water + organic’ solvent system, it has been studied how the HPA-n composition and reaction conditions affect the HPA-n selectivity and activity. The reaction mechanism and methods of increasing the catalyst selectivity are suggested. The reaction has been used in scope of a new environmentally harmless technology ‘Vikasib’ producing the K-group vitamins.
Cite:
Matveev K.I.
, Odyakov V.F.
, Zhizhina E.G.
Heteropoly Acids as Oxidation Catalysts in Synthesis of K-Vitamins
Journal of Molecular Catalysis A: Chemical. 1996. V.114. N1-3. P.151-160. DOI: 10.1016/S1381-1169(96)00313-5 WOS Scopus РИНЦ
Heteropoly Acids as Oxidation Catalysts in Synthesis of K-Vitamins
Journal of Molecular Catalysis A: Chemical. 1996. V.114. N1-3. P.151-160. DOI: 10.1016/S1381-1169(96)00313-5 WOS Scopus РИНЦ
Dates:
Submitted: | Nov 17, 1995 |
Published print: | Dec 23, 1996 |
Published online: | Dec 16, 1999 |
Identifiers:
Web of science | WOS:A1996WC26500015 |
Scopus | 2-s2.0-0030599609 |
Elibrary | 13234147 |
Chemical Abstracts | 1996:737390 |
Chemical Abstracts (print) | 126:89596 |
OpenAlex | W2136538356 |