A novel porous-dense dual-layer composite membrane reactor with long-term stability

Wei Jiang, Guangru Zhang, Zhengkun Liu, Kai Zhang, Wanqin Jin

科研成果: 期刊稿件文章同行评审

13 引用 (Scopus)

摘要

A porous-dense dual-layer composite membrane reactor was proposed. The dual-layer composite membrane composed of dense 0.5 wt % Nb2O5-doped SrCo0.8Fe0.2O3-δ (SCFNb) layer and porous Ba0.3Sr0.7Fe0.9Mo0.1O3-δ (BSFM) layer was prepared. The stability of SCFNb membrane reactor was improved significantly by the porous-dense dual-layer design philosophy. The porous BSFM surface-coating layer can effectively reduce the corrosion of the reducing atmosphere to the membrane, whereas the dense SCFNb layer permeated oxygen effectively. Compared with single-layer dense SCFNb membrane reactor, no degradation of performance was observed in the dual-layer membrane reactor under partial oxidation of methane during continuously operating for 1500 h at 850°C. At 900°C, oxygen flux of 18.6 mL (STP: Standard Temperature and Pressure) cm-2 min-1, hydrogen production of 53.67 mL (STP) cm-2 min-1, CH4 conversion of 99.34% and CO selectivity of about 94% were achieved.

源语言英语
页(从-至)4355-4363
页数9
期刊AIChE Journal
59
11
DOI
出版状态已出版 - 11月 2013

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