Effect of post-calcination thermal treatment on acid properties and pores structure of a mesoporous niobium-tungsten oxide

Atsushi Takagaki, Caio Tagusagawa, Kazuhiro Takanabe, Junko N. Kondo, Takashi Tatsumi, Kazunari Domen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)144-148
Number of pages5
JournalCatalysis Today
Volume192
Issue number1
DOIs
StatePublished - Sep 30 2012

Keywords

  • Friedel-Crafts alkylation
  • Hydrolysis
  • Porous metal oxide
  • Solid acid

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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