Studies on preparation, characterization and ammoxidation functionality of zirconium phosphate-supported V2O5 catalysts

Zirconium pyrophosphate (ZrP2O7) was synthesized from zirconyl chloride and phosphoric acid. A series of ZrP2O7-supported V2O5 catalysts, with the oxide loading ranging from 2 to 8 wt.%, was prepared by wet impregnation method. These catalysts were characterized by various techniques like X-ray diff...

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Bibliographic Details
Published in:	Catalysis letters Vol. 106; no. 3-4; pp. 115 - 122
Main Authors:	SRILAKSHMI, Ch, RAMESH, K, NAGARAJU, P, LINGAIAH, N, SAI PRASAD, P. S
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer 01-02-2006 Springer Nature B.V
Subjects:	Ammonia Catalysis Catalysts Chemical properties Chemical synthesis Chemistry Exact sciences and technology General and physical chemistry Infrared spectroscopy Organic chemistry Phosphoric acid Photoelectrons Pore size distribution Porosity Selectivity Spectrum analysis Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Vanadium pentoxide X-ray diffraction Zirconium Vanadium complex Nitrogen heterocycle Transition element compounds vanadia catalysts Ammoxidation Zirconium phosphate Supported catalyst Characterization Heterogeneous catalysis zirconium pyrophosphate vanadium ammonium complex Six membered ring Preparation Pyrazine Vanadium oxide ammoxidation of 2-methyl pyrazine Catalyst support
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Summary:	Zirconium pyrophosphate (ZrP2O7) was synthesized from zirconyl chloride and phosphoric acid. A series of ZrP2O7-supported V2O5 catalysts, with the oxide loading ranging from 2 to 8 wt.%, was prepared by wet impregnation method. These catalysts were characterized by various techniques like X-ray diffraction, BET surface area, pore size distribution, FT-IR spectroscopy, acidity measurements and X-ray photoelectron spectroscopy. Their catalytic functionality was evaluated in the ammoxidation of 2-methyl pyrazine (MP) to 2-cyano pyrazine (CP). The V2O5/ZrP2O7 catalysts are found to be highly active and selective. FT-IR profiles of used catalysts indicate the interaction of ammonia with vanadia. The physico-chemical properties of the catalysts are correlated with their activity and nitrile selectivity.
ISSN:	1011-372X 1572-879X
DOI:	10.1007/s10562-005-9617-1