The influence of the residual growth catalyst in functionalized carbon nanotubes on supported Pt nanoparticles applied in selective olefin hydrogenation

被引：39

作者：

Chen, Peirong ^{[1
]}

Chew, Ly May ^{[1
]}

Xia, Wei ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Lab Ind Chem, D-44780 Bochum, Germany

来源：

JOURNAL OF CATALYSIS | 2013年 / 307卷

关键词：

Carbon nanotube; Supported Pt nanoparticle; Residual growth catalyst; Functional group; Olefin hydrogenation; Activity; Selectivity; MODIFIED ELECTRODES; PLATINUM CATALYSTS; OXYGEN REDUCTION; NITRIC-ACID; NITROGEN; TEMPERATURE; METAL; ELECTROCHEMISTRY; ELECTROCATALYSTS; IMPURITIES;

D O I：

10.1016/j.jcat.2013.06.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of the residual growth catalyst on the reducibility and catalytic activity of Pt nanoparticles supported on oxygen- and nitrogen-functionalized CNTs (OCNTs and NCNTs) was systematically investigated. It was found that the presence of the residual growth catalyst significantly influenced the oxygen and nitrogen functionalization of CNTs, which consequently altered the reducibility of the supported Pt nanoparticles. Pt nanoparticles on NCNTs showed a higher stability against sintering in reducing atmosphere at 200 degrees C and 400 degrees C than those on OCNTs. On NCNTs, Pt was in a higher oxidation state and was not as easily reducible as on OCNTs. In hydrogenation catalysis, removing the residual growth catalyst is essential for the supported Pt catalyst to achieve a better performance. Compared with Pt on OCNTs, Pt on NCNTs was less active, but more selective in olefin hydrogenation due to the poisoning effect of the surface nitrogen species. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：84 / 93

页数：10

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