A solid acid of tungsta-niobia more active than aluminosilicates for decompositions of cumene, ethylbenzene, and toluene

Autor:	Hiromi Matsuhashi, Makoto Hino, Kazushi Arata, Mitsuhiko Kurashige
Rok vydání:	2006
Předmět:	chemistry.chemical_classification Cumene Process Chemistry and Technology Inorganic chemistry Ammonium oxalate Toluene Ethylbenzene Catalysis Mordenite Acid strength chemistry.chemical_compound Adsorption chemistry
Zdroj:	Applied Catalysis A: General. 310:190-193
ISSN:	0926-860X
DOI:	10.1016/j.apcata.2006.05.038
Popis:	A solid acid of tungsten-niobium oxide was obtained by evaporating the water from a mixed solution of ammonium metatungstate and niobium ammonium oxalate in water in the ratio 7:1 of W to Nb, followed by calcining in air at 400 °C. The catalytic activity of the solid acid for decompositions of toluene, ethylbenzene, and cumene was higher than those of tungstated zirconia, mordenite, and silica-alumina. The chief ingredient of Nb in the mixture was less effective. The acid strength was estimated by the heat of Ar adsorption to be 18.1 kJ mol −1 , the value being coincident with that of H-mordenite (18.3 kJ mol −1 ).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6240d43e4c7d044ee42ece839e34b5a8 https://doi.org/10.1016/j.apcata.2006.05.038 Zobrazit plný text záznamu Full Text from ScienceDirect