Atomic-layered Au clusters on α-MoC as catalysts for the low-temperature water-gas shift reaction

被引：669

作者：

Yao, Siyu ^{[1
,2
]}

Zhang, Xiao ^{[3
]}

Zhou, Wu ^{[4
,5
]}

Gao, Rui ^{[6
,7
]}

Xu, Wenqian ^{[8
]}

Ye, Yifan ^{[9
]}

Lin, Lili ^{[1
,2
]}

Wen, Xiaodong ^{[6
,7
]}

Liu, Ping ^{[8
]}

Chen, Bingbing ^{[3
]}

Crumlin, Ethan ^{[9
]}

Guo, Jinghua ^{[9
]}

Zuo, Zhijun ^{[10
]}

Li, Weizhen ^{[1
,2
]}

Xie, Jinglin ^{[1
,2
]}

Lu, Li ^{[11
]}

Kiely, Christopher J. ^{[11
]}

Gu, Lin ^{[12
]}

Shi, Chuan ^{[3
]}

Rodriguez, Jose A. ^{[8
]}

Ma, Ding ^{[1
,2
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

[2] Peking Univ, Coll Engn, Beijing 100871, Peoples R China

[3] Dalian Univ Technol, Coll Chem, State Key Lab Fine Chem, Dalian 116024, Peoples R China

[4] Chinese Acad Sci, Univ Chinese Acad Sci, Key Lab Vacuum Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[5] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[6] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, POB 165, Taiyuan 030001, Shanxi, Peoples R China

[7] Synfuels China, Beijing 100195, Peoples R China

[8] Brookhaven Natl Lab, Chem Div, Bldg 555,POB 5000, Upton, NY 11973 USA

[9] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[10] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Minist Educ & Shanxi Prov, Taiyuan 030024, Shanxi, Peoples R China

[11] Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA

[12] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

SCIENCE | 2017年 / 357卷 / 6349期

基金：

美国国家科学基金会;

关键词：

NANOPARTICLES; CERIA; OXIDATION;

D O I：

10.1126/science.aah4321

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The water-gas shift (WGS) reaction (where carbon monoxide plus water yields dihydrogen and carbon dioxide) is an essential process for hydrogen generation and carbon monoxide removal in various energy-related chemical operations. This equilibrium-limited reaction is favored at a low working temperature. Potential application in fuel cells also requires a WGS catalyst to be highly active, stable, and energy-efficient and to match the working temperature of on-site hydrogen generation and consumption units. We synthesized layered gold (Au) clusters on a molybdenum carbide (alpha-MoC) substrate to create an interfacial catalyst system for the ultralow-temperature WGS reaction. Water was activated over alpha-MoC at 303 kelvin, whereas carbon monoxide adsorbed on adjacent Au sites was apt to react with surface hydroxyl groups formed from water splitting, leading to a high WGS activity at low temperatures.

引用

页码：389 / +

页数：5

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