催化作用
贵金属
选择性
铂金
纳米结构
制作
材料科学
化学工程
金属
化学
过渡金属
纳米技术
冶金
有机化学
医学
替代医学
病理
工程类
作者
Yanji Zhang,Jicheng Zhou,Fei Wang,Xingyu Zhao
出处
期刊:Langmuir
[American Chemical Society]
日期:2022-06-14
卷期号:38 (25): 7699-7708
被引量:3
标识
DOI:10.1021/acs.langmuir.2c00531
摘要
Fabrication of low-loading, noble-metal, stable, and high-performance metal catalysts remains a thorny issue. Herein, we demonstrate the successful formation of a hybrid nanostructure Pt/TiO2/SBA-15 catalyst (denoted as HNSC-P/T/S; Pt, 0.09%; TiO2, 10%) with satisfactory activity in the hydrogenation of para-chloronitrobenzene (p-CNB). The HNSC-P/T/S showed >99% conversion and a high selectivity of >98%, and the turnover frequency number (TOF) reached 66 766 h-1, which was impossible to achieve with Pt/TiO2 (denoted as P/T) or Pt/SBA-15 (denoted as P/S). The success of the catalytic activity of the HNSC-P/T/S mainly relies on its synergistic effect and special structure, which can fully develop the catalytic ability of Pt, thereby reducing the Pt loading in the noble-based catalyst. Furthermore, the HNSC-P/T/S could also achieve an excellent catalytic activity in the hydrogenation of other nitroarenes. Hence, this work proposes a direction to prepare a noble-based catalyst with a low loading of noble metals for diverse applications.
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