双金属片
脱氢
纳米颗粒
催化作用
材料科学
碳纤维
金属
纳米技术
介孔材料
贵金属
硫黄
化学工程
化学
有机化学
冶金
复合材料
复合数
工程类
作者
Shilong Xu,Shan‐Cheng Shen,Zeyue Wei,Shuai Zhao,Lu‐Jie Zuo,Ming‐Xi Chen,Lei Wang,Ding Ye,Ping Chen,Shengqi Chu,Yue Lin,Kun Qian,Haojun Liang
出处
期刊:Nano Research
[Springer Nature]
日期:2020-07-15
卷期号:13 (10): 2735-2740
被引量:18
标识
DOI:10.1007/s12274-020-2920-8
摘要
Small-sized bimetallic nanoparticles that possess numerous accessible metal sites and optimal geometric/electronic structures show great promise for advanced synergetic catalysis but remain synthetic challenge so far. Here, an universial synthetic method is developed for building a library of bimetallic nanoparticles on mesoporous sulfur-doped carbon supports, consisting of 24 combinations of 3 noble metals (that is, Pt, Rh, Ir) and 7 other metals, with average particle sizes ranging from 0.7 to 1.4 nm. The synthetic strategy is based on the strong metal-support interaction arising from the metal-sulfur bonding, which suppresses the metal aggregation during the H2-reduction at 700 °C and ensure the formation of small-sized and alloyed bimetallic nanoparticles. The enhanced catalytic properties of the ultrasmall bimetallic nanoparticles are demonstrated in the dehydrogenation of propane at high temperature and oxidative dehydrogenations of N-heterocycles.
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