Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Graphene Supported Pt–Co Bimetallic Catalysts
Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Graphene Supported Pt–Co Bimetallic Catalysts
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DOI：
10.1007/s10562-014-1209-5
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发表时间：
2014-02
影响因子：
2.8
通讯作者：
Zeming Rong;Zhuohua Sun;Yong Wang;Jinkun Lv;Yue Wang
中科院分区：
文献类型：
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作者：
Zeming Rong;Zhuohua Sun;Yong Wang;Jinkun Lv;Yue Wang
采用NaBH4还原法制备了以氧化石墨烯为载体的铂基双金属纳米粒子，并对其催化肉桂醛选择加氢合成肉桂醇进行了研究。与其他金属(铁、镍、铜、锌)相比，钴有效地促进了催化剂的催化性能。当铂与钴的质量比为5：1时，催化剂对氧化钙的选择性为89.5%，转化率为94.6%，高于纯铂催化剂。提高的选择性和活性可能归因于通过金属-金属相互作用改变了铂金属表面的电子环境。
AbstractPt-based bimetallic nanoparticles supported on reduced graphene oxide were prepared by a facile NaBH4reduction and chemically probed in the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol (CAO). Compared with other metals (Fe, Ni, Cu, Zn), Co effectively promoted the catalytic performance. When the mass ratio of Pt:Co was 5:1, the selectivity to CAO was 89.5 % with 94.6 % conversion, which were higher than exclusively using Pt catalyst. The enhanced selectivity and activity might be attributed to the change of the electronic environment on Pt metal surface through metal–metal interaction.Graphical Abstract