Photo-assisted catalytic methanation of CO in H2-rich stream over Ru/TiO2

被引：65
|
作者：
Lin, Xiahui [1 ,2 ]
Yang, Kai [1 ]
Si, Ruiru [1 ]
Chen, Xun [1 ]
Dai, Wenxin [1 ]
Fu, Xianzhi [1 ]
机构：
[1] Fuzhou Univ, Res Inst Photocatalysis, Fujian Prov Key Lab Photocatalysis, State Key Lab Breeding Base, Fuzhou 350002, Peoples R China
[2] LongYan Univ, Coll Chem & Mat Sci, Longyan 364012, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 147卷
基金：
中国国家自然科学基金;
关键词：
Methanation of CO; Ru/TiO2; Photo-assisted effect; Electron transfer; B BICOMPONENT CATALYST; SELECTIVE METHANATION; MICROCHANNEL REACTOR; REFORMATE GASES; CARBON-DIOXIDE; UV-IRRADIATION; OXIDATION; HYDROGEN; AU/TIO2; RU;
D O I：
10.1016/j.apcatb.2013.09.035
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：
Ultraviolet (UV) light was introduced into the process of hydrogenation of CO over Ru/TiO2 catalyst which were prepared by a facile impregnation-reduction method. It is found that UV irradiation can promote the conversion of CO into CH4 over Ru/TiO2 at 150-220 degrees C. Based on the testing results of XPS, FT-IR and TPSR for Ru/TiO2 under UV irradiation, it is proposed that the photo-generated electrons induced by the band-gap excitation of TiO2 can transfer to Ru along with the increase of surface electron density of Ru sites. This will further promote the adsorption of CO and its activation at Ru sites, resulting in the photo-enhancement of the methanation of CO. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：585 / 591
页数：7
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