Reaction mechanism on reduction surface of mixed conductor membrane for H₂ production by coal-gas

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• 作者：PeiJun Shen ; WeiZhong Ding ; YuDing Zhou ; ShaoQing Huang
• 关键词：Mixed conductor membrane ; BaCo_0.7Fe_0.2Nb_0.1O₃₋ ; δ ; ; Coal-gas reforming ; Surface reaction
• 刊名：Applied Surface Science
• 出版年：2010
• 出版时间：1 June 2010
• 年：2010
• 卷：256
• 期：16
• 页码：5094-5101
• 全文大小：1388 K

文摘

The reaction mechanism on surface of BaCo_0.7Fe_0.2Nb_0.1O_3−δ membrane for reforming coal-gas was studied. The effects of metal particle on membrane surface were concluded. ‘Activation mechanism’ was proposed to be the key for enhancing oxygen permeation of membrane; while the catalyst-bed only takes charge of the reforming reaction. Though not as important as ‘activation mechanism’, the ‘space charge mechanism’ still affects the oxygen permeation of membrane. According to these mechanisms, the new design and surface-modifying strategy of membrane reactor were proposed.