Catalysis Today p. 144 - 148 (2012)
Update date:2022-08-11
Topics:
Takagaki, Atsushi
Tagusagawa, Caio
Takanabe, Kazuhiro
Kondo, Junko N.
Tatsumi, Takashi
Domen, Kazunari
Effect of post-calcination thermal treatment on acid properties and pores structure of a mesoporous niobium-tungsten oxide was examined. Mesoporous Nb-W oxides treated by high temperature calcination from 673 up to 873 K exhibited a significant increase in pore size from 4.8 to 9.2 nm, a decrease in pore volume, surface area and acid amount, while the acid strength and density remained almost constant. A remarkable improvement in acid catalysis was observed for Friedel-Crafts alkylation and hydrolysis of disaccharide where the turnover frequency for both reactions increased continuously with calcination temperature.
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