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学科主题: 物理化学
题名: Enhanced Catalysis by the Interface Confinement
作者: Bao XH(包信和)
会议文集: Proceedings of OCPA7
会议名称: The 7th Joint Meeting of Chinese Physicsists Worldwide
会议日期: 2011-8-1
出版日期: 2011
会议地点: 台湾
通讯作者: 包信和
出版者: 待补充
出版地: 待补充
合作性质: 分会特邀报告
部门归属: 502
主办者: 台湾高雄国立中山大学
摘要: In the present talk, a unique effect of confinement on catalysis will be illustrated, and the emphasis will be laid on the alteration of electron properties between the interface and subsurface. Coordinatively unsaturated ferrous (CUF) sites confined in nanosized matrices are active centers in a wide range of enzyme and homogeneous catalytic reactions. Preparation of the analogous active sites at supported catalysts is of great significance in heterogeneous catalysis but remains a challenge. Based on surface science measurements and density functional calculations, we show that interface confinement effect could be utilized to stabilize the CUF sites by taking advantage of strong adhesion between ferrous oxides and metal substrates. The interface confined CUF sites together with the metal supports are active for O2 activation, producing reactive dissociated O atoms. We show that the unique structural ensemble was highly efficient for CO oxidation at low temperature under typical operating conditions of a proton exchange membrane fuel cell.
英文摘要: In the present talk, a unique effect of confinement on catalysis will be illustrated, and the emphasis will be laid on the alteration of electron properties between the interface and subsurface. Coordinatively unsaturated ferrous (CUF) sites confined in nanosized matrices are active centers in a wide range of enzyme and homogeneous catalytic reactions. Preparation of the analogous active sites at supported catalysts is of great significance in heterogeneous catalysis but remains a challenge. Based on surface science measurements and density functional calculations, we show that interface confinement effect could be utilized to stabilize the CUF sites by taking advantage of strong adhesion between ferrous oxides and metal substrates. The interface confined CUF sites together with the metal supports are active for O2 activation, producing reactive dissociated O atoms. We show that the unique structural ensemble was highly efficient for CO oxidation at low temperature under typical operating conditions of a proton exchange membrane fuel cell.
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115977
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Bao XH. Enhanced Catalysis by the Interface Confinement[C]. 见:The 7th Joint Meeting of Chinese Physicsists Worldwide. 台湾. 2011-8-1.
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