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

页码：214 / 221

页数：8

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