A Versatile VMPO Catalyst Prepared In Situ for Oxidative Ammonolysis of Isomeric Picolines and Xylenes

Autor:	Devendra Deo Pathak, P. Dutta, Rabinarayan Senapati
Rok vydání:	2020
Předmět:	Thermal decomposition chemistry.chemical_element Vanadium General Chemistry Decomposition law.invention Catalysis chemistry law Molybdenum Calcination Ammoxidation BET theory Nuclear chemistry
Zdroj:	Russian Journal of General Chemistry. 90:292-298
ISSN:	1608-3350 1070-3632
DOI:	10.1134/s1070363220020218
Popis:	The V2O5–MoO3–P2O5 (VMPO) catalyst has been prepared in situ by thermal decomposition of vanado-molybdophosphoric acid (PMoV) on TiO2 support at 475°C. The TiO2 supported VMPO catalysts are characterized by FT–IR, XRD, BET surface area, NH3–TPD, and H2–TPR. Morphology of the catalyst has been studied by TEM. The accumulated data indicate decomposition of PMoV and presence of phosphate and pyrophosphate phases of molybdenum and vanadium after calcination. TPD and TPR studies exhibit the moderate acidity and presence of V4+ in the material, respectively. The VMPO catalyst has been used for ammoxidation of six different compounds including three isomeric picolines and three isomeric xylenes to the corresponding nitriles with the yield of 90–96%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6eda8ab5f1adebd37335e26093bbf621 https://doi.org/10.1134/s1070363220020218 Zobrazit plný text záznamu Plný text ve formátu PDF