铜纳米粒子负载于钴纳米片的双金属催化剂催化CO选择性加氢

doi:10.1016/S1872-2067(12)60649-4

催化学报 ›› 2013, Vol. 34 ›› Issue (11): 1998-2003.DOI: 10.1016/S1872-2067(12)60649-4

铜纳米粒子负载于钴纳米片的双金属催化剂催化CO选择性加氢

吕东, 祝艳, 孙予罕

中国科学院上海高等研究院低碳能源科学与工程转化技术中心, 上海201210

收稿日期:2013-05-30 修回日期:2013-06-27 出版日期:2013-10-18 发布日期:2013-10-18
通讯作者: Yan Zhu,Yuhan Sun
基金资助:
国家自然科学基金(21273151);中国科学院上海高等研究院与壳牌石油公司“壳牌前瞻科学项目”(PT19979).

Cu nanoclusters supported on Co nanosheets for selective hydrogenation of CO

Dong Lü, Yan Zhu, Yuhan Sun

Low-Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China

Received:2013-05-30 Revised:2013-06-27 Online:2013-10-18 Published:2013-10-18
Contact: Yan Zhu,Yuhan Sun
Supported by:
This work was supported by the National Natural Science Foundation of China (21273151) and the Shell-CAS Frontier Science Foundation (PT19979).

摘要/Abstract

摘要：

使用赖氨酸作为表面活性剂模板, 合成了Cu纳米粒子负载于Co纳米片的双金属催化剂Cu/Co. 与常规的Cu-Co双金属纳米颗粒催化剂相比, Cu/Co催化剂对CO选择性加氢反应表现出特殊的结构效应, 提高了CO转化率和高级醇选择性, 降低了甲烷选择性. Cu/Co催化剂中, Cu(111)面与Co(100)面相互作用的功能化界面有利于深入研究金属-金属的相互作用. 这种双金属催化剂可以将模型催化剂和现实催化应用联系起来, 将有助于获得对合成气转化制高级醇反应机理的本质认识.

关键词: 铜纳米粒子, 钴纳米片, 双金属催化剂, 功能化界面, 一氧化碳加氢

Abstract:

Cu nanoclusters supported on Co nanosheets (denoted Cu/Co) were prepared using lysine as a surfactant template. The shape of the Cu/Co catalyst promotes selective hydrogenation of CO, enhancing CO conversion and the selectivity for higher alcohols, and decreasing methane selectivity, which is in marked contrast to current Cu-Co bimetallic nanoparticle catalysts. The distinct functional interface of the Cu(111) surface with face-centered cubic structure with the Co(100) surface with hexagonal closed-packed structure in the Cu/Co catalyst provides a breakthrough in understanding the catalytic nature of metal-metal interactions. The design of this bimetallic catalyst bridges the gap between model catalysts and realistic catalytic applications, and will ultimately allow us to gain a fundamental understanding of the mechanism of syngas conversion to higher alcohols.

Key words: Copper nanocluster, Cobalt nanosheet, Bimetallic catalyst, Functional interface, Carbon monoxide hydrogenation

吕东, 祝艳, 孙予罕. 铜纳米粒子负载于钴纳米片的双金属催化剂催化CO选择性加氢[J]. 催化学报, 2013, 34(11): 1998-2003.

Dong Lü, Yan Zhu, Yuhan Sun. Cu nanoclusters supported on Co nanosheets for selective hydrogenation of CO[J]. Chinese Journal of Catalysis, 2013, 34(11): 1998-2003.

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铜纳米粒子负载于钴纳米片的双金属催化剂催化CO选择性加氢

Cu nanoclusters supported on Co nanosheets for selective hydrogenation of CO

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