Reaction intermediate species during the steam reforming of methanol over metal modified molybdenum carbide catalysts

被引：54

作者：

Cao, Ji ^{[1
]}

Ma, Yufei ^{[1
,2
]}

Guan, Guoqing ^{[1
,2
]}

Hao, Xiaogang ^{[3
]}

Ma, Xuli ^{[2
,3
]}

Wang, Zhongde ^{[3
]}

Kusakabe, Katsuki ^{[4
]}

Abudula, Abuliti ^{[1
,2
]}

机构：

[1] Hirosaki Univ, Grad Sch Sci & Technol, 3 Bunkyo Cho, Hirosaki, Aomori 0368561, Japan

[2] Hirosaki Univ, North Japan Res Inst Sustainable Energy, 2-1-3 Matsubara, Aomori 0300813, Japan

[3] Taiyuan Univ Technol, Dept Chem Engn, Taiyuan 030024, Peoples R China

[4] Sojo Univ, Dept Nanosci, 4-22-1 Ikeda, Kumamoto 8600082, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2016年 / 189卷

基金：

日本科学技术振兴机构;

关键词：

Steam reforming of methanol; Molybdenum carbide; Metal-modified molybdenum carbide; Reaction intermediate species; Mechanism; WATER-GAS-SHIFT; HYDROGEN-PRODUCTION; MO2C CATALYSTS; 1ST-PRINCIPLES; DECOMPOSITION; PERFORMANCE; STABILITY; SURFACES; ZIRCONIA; CU(111);

D O I：

10.1016/j.apcatb.2016.02.021

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：

To understand steam reforming of methanol (SRM) reaction pathways over the surfaces of various metal modified molybdenum carbides, the reaction intermediate species generated during the SRM reaction are investigated by using a temperature programmed surface reaction (TPSR) approach, in which a mass spectroscopy is applied to detect the produced species on-line. It is found that the reaction temperature affects the formation of different intermediate species over different catalysts. At the temperature lower than 180 degrees C, SRM reaction proceeds over Cu modified molybdenum carbide surface through formic acid (HCOOH) intermediate pathway, but at the temperature over 180 degrees C, the reactions over pure beta-Mo2C, Ni, Cu and Pt modified molybdenum carbide surfaces proceed through methyl-formate (HCOOCH3) intermediate pathway. It is expected that these findings can help us to understand the mechanism on SRM reaction over molybdenum carbide based catalysts. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：12 / 18

页数：7

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