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Methylpyrazine Ammoxidation over Binary Oxide Systems: V. Effect of Phosphorus Additives on the Physicochemical and Catalytic Properties of a Vanadium-Titanium Catalyst in Methylpyrazine Ammoxidation Full article

Journal Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210
Output data Year: 2004, Volume: 45, Number: 1, Pages: 104-113 Pages count : 10 DOI: 10.1023/B:KICA.0000016110.21537.0a
Tags Vanadium; Catalytic Property; Pyrazine; Carbon Oxide; Oxide Vanadium
Authors Bondareva V.M. 1 , Andrushkevich T.V. 1 , Lapina O.B. 1 , Khabibulin D.F. 1 , Vlasov A.A. 1 , Dovlitova L.S. 1 , Burgina E.B. 1
Affiliations
1 Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Funding (2)

1 Russian Foundation for Basic Research 01-03-32364
2 International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union 04522 WK

Abstract: Oxide vanadium–titanium catalysts modified by phosphorus additives (20V2O5–(80 –n)TiO2–nP2O5, n = 1, 3, 5, 10, and 15 wt %) are studied in methylpyrazine ammoxidation. Two regions of compositions are found corresponding to radically different catalytic properties, namely, catalysts with a low (≤5 wt % P2O5) and high (≥10 wt % P2O5) concentration of the additive. In the first case, the introduction of phosphorus is accompanied by a gradual increase in the activity. In the second case, an increase in the additive concentration results in a decrease in the activity and selectivity to the target product, pyrazineamide, and a simultaneous increase in the selectivities to by-products, pyrazine and carbon oxides. The catalysts are characterized by X-ray diffraction analysis, differential dissolution, IR, and NMR spectroscopic data. As in the binary system, the active sites of the samples with a low concentration of phosphorus contain V5+ cations in a strongly distorted octahedral oxygen environment, which are strongly bound to a support due to the formation of V–O–Ti bonds. The catalytic properties of the samples containing ≥10 wt % P2O5 are due to the presence of the phase of a triple V–P–Ti compound with an atomic ratio V : P : Ti approximately equal to 1 : 1 : 1. The V5+ cations in this compound occur in a weakly distorted tetrahedral oxygen environment and are bound to the tetrahedral P5+ cations.
Cite: Bondareva V.M. , Andrushkevich T.V. , Lapina O.B. , Khabibulin D.F. , Vlasov A.A. , Dovlitova L.S. , Burgina E.B.
Methylpyrazine Ammoxidation over Binary Oxide Systems: V. Effect of Phosphorus Additives on the Physicochemical and Catalytic Properties of a Vanadium-Titanium Catalyst in Methylpyrazine Ammoxidation
Kinetics and Catalysis. 2004. V.45. N1. P.104-113. DOI: 10.1023/B:KICA.0000016110.21537.0a WOS Scopus РИНЦ ANCAN OpenAlex
Original: Бондарева В.М. , Андрушкевич Т.В. , Лапина О.Б. , Хабибулин Д.Ф. , Власов А.А. , Довлитова Л.С. , Бургина Е.Б.
Окислительный аммонолиз метилпиразина на бинарных оксидных системах. V. Влияние добавок фосфора на физико-химические и каталитические свойства ванадийтитанового катализатора
Кинетика и катализ. 2004. Т.45. №1. С.115-125. РИНЦ
Dates:
Submitted: Jun 21, 2002
Published print: Jan 1, 2004
Identifiers:
Web of science: WOS:000220015800008
Scopus: 2-s2.0-1542619630
Elibrary: 13451745
Chemical Abstracts: 2004:122273
Chemical Abstracts (print): 141:8824
OpenAlex: W2095166601
Citing:
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Web of science 5
Scopus 6
Elibrary 6
OpenAlex 6
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