CO2methanationoverTiO2–Al2O3binaryoxidessupportedRucatalysts

被引：6

作者：

Jinghua Xu ^{[1
,2
]}

Qingquan Lin ^{[3
]}

Xiong Su ^{[2
]}

Hongmin Duan ^{[2
]}

Haoran Geng ^{[1
]}

Yanqiang Huang ^{[2
]}

机构：

[1] School of Materials Science and Engineering, Shandong University

[2] State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences

[3] School of Chemistry and Chemical Engineering, Yantai University, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC)

来源：

Chinese Journal of Chemical Engineering | 2016年 / 24卷 / 01期

关键词：

CO2; methanation; Supported Ru catalyst; TiO2–Al2O3 binary oxide;

D O I：

暂无

中图分类号：

O643.36 [催化剂];

学科分类号：

081705 ;

摘要：

TiO2 modified Al2O3 binary oxide was prepared by a wet-impregnation method and used as the support for ruthenium catalyst. The catalytic performance of Ru/TiO2–Al2O3catalyst in CO2 methanation reaction was investigated. Compared with Ru/Al2O3 catalyst, the Ru/TiO2–Al2O3catalytic system exhibited a much higher activity in CO2 methanation reaction. The reaction rate over Ru/TiO2–Al2O3 was 0.59 mol CO2·（g Ru）1·h-1, 3.1 times higher than that on Ru/Al2O3[0.19 mol CO2·（gRu）-1·h-1]. The effect of TiO2 content and TiO2–Al2O3calcination temperature on catalytic performance was addressed. The corresponding structures of each catalyst were characterized by means of H2-TPR, XRD, and TEM. Results indicated that the averaged particle size of the Ru on TiO2–Al2O3support is 2.8 nm, smaller than that on Al2O3 support of 4.3 nm. Therefore, we conclude that the improved activity over Ru/TiO2–Al2O3catalyst is originated from the smaller particle size of ruthenium resulting from a strong interaction between Ru and the rutile-TiO2 support, which hindered the aggregation of Ru nanoparticles.

引用

页码：140 / 145

页数：6

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