Hydrothermal synthesis of vanadate-substituted hydroxyapatites, and catalytic properties for conversion of 2-propanol

Shuhei Ogo, Ayumu Onda*, Kazumichi Yanagisawa

*この研究の対応する著者

研究成果: Article査読

49 被引用数 (Scopus)

抄録

M-vanadate hydroxyapatites and M-phosphate hydroxyapatites (M = Ca, Sr, and Pb) were synthesized at 110 °C for 14 h under a hydrothermal condition. The prepared powders were characterized by the ICP chemical analysis, the powder X-ray diffraction, the TEM observation, the nitrogen physisorption, the TG analysis, and the CO2-TPD measurements. The catalytic properties for the reaction of 2-propanol depended on the component ions of the prepared hydroxyapatites. In an argon atmosphere, the acetone selectivity of the prepared hydroxyapatite catalysts increased in the following order: Ca < Sr < Pb and vanadate < phosphate. The catalytic activity values of M-vanadate hydroxyapatites were higher than those of M-phosphate hydroxyapatites, except for Sr-vanadate hydroxyapatite which decomposed during the reaction at 250 °C. Hydrogen was stoichiometrically produced with acetone over the M-phosphate hydroxyapatites and Pb-vanadate hydroxyapatite with strong basic sites.

本文言語English
ページ(範囲)129-134
ページ数6
ジャーナルApplied Catalysis A: General
348
1
DOI
出版ステータスPublished - 2008 9月 30
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • プロセス化学およびプロセス工学

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