Reaction and oxygen permeation studies in Sm0.4Ba 0.6Fe0.8Co0.2O3 - δ membrane reactor for partial oxidation of methane to syngas

Masayuki Ikeguchi, Tomohiro Mimura, Yasushi Sekine, Eiichi Kikuchi, Masahiko Matsukata*

*この研究の対応する著者

研究成果: Article査読

72 被引用数 (Scopus)

抄録

A disk-type Sm0.4Ba0.6Co0.2Fe 0.8O3 - δ perovskite-type mixed-conducting membrane was applied to a membrane reactor for the partial oxidation of methane to syngas (CO + H2). The reaction was carried out using Rh (1 wt%)/MgO catalyst by feeding CH4 diluted with Ar. While CH4 conversion increased and CO selectivity slightly decreased with increasing temperature, a high level of CH4 conversion (90%) and a high selectivity to CO (98%) were observed at 1173 K. The oxygen flux was increased under the conditions for the catalytic partial oxidation of CH4 compared with that measured when Ar was fed to the permeation side. We investigated the reaction pathways in the membrane reactor using different membrane reactor configurations and different kinds of gas. In the membrane reactor without the catalyst, the oxygen flux was not improved even when CH 4 was fed to the permeation side, whereas the oxygen flux was enhanced when CO or H2 was fed. It is implied that the oxidation of CO and H2 with the surface oxygen on the permeation side improves the oxygen flux through the membrane, and that CO2 and H 2O react with CH4 by reforming reactions to form syngas.

本文言語English
ページ(範囲)212-220
ページ数9
ジャーナルApplied Catalysis A: General
290
1-2
DOI
出版ステータスPublished - 2005 8月 18

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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