Effect of microstructures of Pt catalysts supported on carbon nanotubes (CNTs) and activated carbon (AC) for nitrobenzene hydrogenation

Yun Zhao; Chun-Hua Li; Zhen-Xing YuKe-Fu YaoSheng-Fu JiJi Liang

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Effect of microstructures of Pt catalysts supported on carbon nanotubes (CNTs) and activated carbon (AC) for nitrobenzene hydrogenation

机译：Effect of microstructures of Pt catalysts supported on carbon nanotubes (CNTs) and activated carbon (AC) for nitrobenzene hydrogenation

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摘要

Pt catalysts supported on carbon nanotubes (CNTs) and activated carbon (AC) were prepared. The structure of the catalysts was characterized using BET, TEM, XPS techniques. The catalytic performance for nitrobenzene hydrogenation was tested. The results show that the mesoporous textures of CNTs make the outer surfaces of CNTs accessible for Pt ion. So Pt particles on CNTs are much smaller, and the proper concentration of surface groups on CNTs makes Pt easy for reducibility. Pt particles on AC are larger due to the microporous texture, and reduction at higher temperature is necessary because of more functional groups on AC. The Pt/CNTs catalysts reduced at lower temperature, exhibit higher activity than the Pt/AC catalysts for nitrobenzene hydrogenation.

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来源
《Materials Chemistry and Physics》 |2007年第3期|225-229|共5页
作者
Yun Zhao; Chun-Hua Li; Zhen-Xing YuKe-Fu YaoSheng-Fu JiJi Liang;
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作者单位

School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, PR China;

Department of Mechanical Engineering, Tsinghua University, Beijing 100084, PR China;

epartment of Mechanical Engineering, Tsinghua University, Beijing 100084, PR ChinaThe Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
Nanostructures; Precipitation; TEM; Microstructure;

Effect of microstructures of Pt catalysts supported on carbon nanotubes (CNTs) and activated carbon (AC) for nitrobenzene hydrogenation

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