Low-temperature hydrogen production from methanol steam reforming on Zn-modified Pt/MoC catalysts

被引:132
作者
Cai, Fufeng [1 ]
Ibrahim, Jessica Juweriah [2 ]
Fu, Yu [1 ]
Kong, Wenbo [1 ]
Zhang, Jun [1 ,3 ]
Sun, Yuhan [1 ,3 ,4 ,5 ]
机构
[1] Chinese Acad Sci, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
[2] Chinese Acad Sci, Key Lab Biobased Mat, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
[3] Shanghai Funct Platform Innovat Low Carbon Techno, Shanghai 201210, Peoples R China
[4] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
Hydrogen production; Methanol steam reforming; Zn-modified Pt/MoC catalysts; Stability; Mechanism; MOLYBDENUM CARBIDE CATALYSTS; GAS-SHIFT REACTION; SUPPORTED-PD; PT-ZN; WATER; STABILITY; PERFORMANCE; SELECTIVITY; KINETICS; CLUSTERS;
D O I
10.1016/j.apcatb.2019.118500
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
Methanol steam reforming (MSR) is a promising process to produce hydrogen suitable for polymer electrolyte membrane fuel cells, but the development of catalysts with high activity and selectivity at low temperature is highly needed. Here, a series of Zn-modified Pt/MoC catalysts with different Zn loadings were prepared and used to produce hydrogen by MSR at low temperature. The addition of small amounts of Zn to Pt/MoC not only favors the formation of alpha-MoC1-x phase, but also enhances the Pt dispersion and the interaction between alpha-MoC1-x and Pt active sites, leading to increased catalytic activity for MSR. The optimal 0.5Zn-Pt/MoC catalyst exhibits superior hydrogen production activity with exceptionally low CO selectivity at low temperatures (120-200 degrees C). Overall, this work offers insight into the structure-activity relationship and stability in Zn-modified Pt/MoC catalysts for MSR, which will be helpful to the design of MSR catalysts with high activity and stability at low temperature.
引用
收藏
页数:13
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