Introducing Oxygen Vacancies and Ti3+on Rh/TiO2 via Plasma Treatment for CO to Ethanol

被引：4
作者：
Wang, Zhenyu [1 ]
Tian, Shoushuai [1 ]
Guo, Junxin [1 ]
Wang, Zhao [1 ]
机构：
[1] Tianjin Univ, Natl Engn Res Ctr Ind Crystallizat Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
来源：
ENERGY & FUELS | 2023年 / 37卷 / 01期
基金：
中国国家自然科学基金;
关键词：
SUPPORTED RH CATALYSTS; RH-MN-LI/SIO2; CATALYST; SYNGAS CONVERSION; CARBON-NANOTUBE; CE PROMOTER; HYDROGENATION; TIO2; NANOPARTICLES; OXIDATION; PD;
D O I：
10.1021/acs.energyfuels.2c03018
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Rh-based catalysts are widely used in CO hydrogenation to ethanol. In this work, Rh/TiO2 catalysts were prepared by glow discharge plasma. Rhodium salt was reduced by electrons in an electric field at room temperature. Oxygen vacancies and Ti3+ were produced on the surface of Rh/TiO2 by plasma. The defects promoted the synergistic effect of Rh and TiO2 through the enhanced interaction between active metal and supporter. Ti3+ is beneficial for the adsorption of intermediate formyl group. In situ IR revealed that the bridged and linear adsorption mechanisms of CO can promote the formation of ethanol intermediates. Rh/TiO2 catalysts by plasma exhibited a superior space-time yield of 0.106 gMeOH center dot gcat-1 h-1, at 260 degrees C and 3 MPa, which was approximately 1.8 times that by traditional hydrogen reduction.
引用
收藏
页码：214 / 221
页数：8
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