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

doi:10.1016/j.cattod.2011.11.036

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

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

9 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 language	English (US)
Pages (from-to)	144-148
Number of pages	5
Journal	Catalysis Today
Volume	192
Issue number	1
DOIs	https://doi.org/10.1016/j.cattod.2011.11.036
State	Published - Sep 30 2012

Keywords

Friedel-Crafts alkylation
Hydrolysis
Porous metal oxide
Solid acid

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1016/j.cattod.2011.11.036

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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.",

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AU - Takagaki, Atsushi

AU - Tagusagawa, Caio

AU - Takanabe, Kazuhiro

AU - Kondo, Junko N.

AU - Tatsumi, Takashi

AU - Domen, Kazunari

PY - 2012/9/30

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N2 - 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.

AB - 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.

KW - Friedel-Crafts alkylation

KW - Hydrolysis

KW - Porous metal oxide

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

Abstract

Keywords

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