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Open AccessArticle

Catalytic Performance of Lanthanum Vanadate Catalysts in Ammoxidation of 2-Methylpyrazine

Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
SABIC Research and Technology Pvt. Ltd., Plot No. 81 to 85, Chikkadunnasandra, Sarjapura, Bangalore-562125, India
Authors to whom correspondence should be addressed.
Academic Editor: Stuart H. Taylor
Catalysts 2016, 6(1), 10;
Received: 25 November 2015 / Revised: 6 January 2016 / Accepted: 7 January 2016 / Published: 12 January 2016
(This article belongs to the Special Issue Catalysts for Selective Oxidation)
PDF [1311 KB, uploaded 12 January 2016]


The influence of reaction conditions on the catalytic performance of lanthanum vanadate (La0.1V0.9Ox) catalyst in the ammoxidation of 2-methylpyrazine (MP) to 2-cyanopyarazine (CP) has been investigated. This novel catalytic material exhibited remarkably good performance with very high space-time-yields (STY) of CP. The reaction parameters such as the effect of temperature, gas hourly space velocity (GHSV) and all other reaction variables (e.g., NH3, air, and MP feed rates) on the catalytic performance were explored and optimized. For example, an increase in MP feed rate from 2 to >16 mmol/h led to decreased conversion of MP but increased the STY of CP significantly. Optimal performance was achieved when the reaction temperature was 420 °C and the molar ratio of 2-MP, ammonia, air, H2O and N2 in the feed gas was set to 1:7:26:13:22. Under these optimal reaction conditions, the catalyst showed a MP conversion of ~100%, CP selectivity of 86%, and STY of >500 gCP/(kgcat∙h). On the other hand, the formation of pyrazine (Py) as a by-product was found to be high when the NH3:MP ratio was lower at increased contact time. This suggests possible differences in the reaction mechanism pathways with respect to feed composition over La0.1V0.9Ox catalysts. View Full-Text
Keywords: 2-methylpyrazine; 2-cyanopyrazine; ammoxidation; lanthanum vanadate; reaction parameters 2-methylpyrazine; 2-cyanopyrazine; ammoxidation; lanthanum vanadate; reaction parameters

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Kalevaru, V.N.; Dhachapally, N.; Martin, A. Catalytic Performance of Lanthanum Vanadate Catalysts in Ammoxidation of 2-Methylpyrazine. Catalysts 2016, 6, 10.

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