CO-free hydrogen production from decomposition of formic acid over Au/Al2O3 catalysts doped with potassium ions

被引：28

作者：

Bulushev, Dmitri A. ^{[1
,2
]}

Zacharska, Monika ^{[3
,4
]}

Guo, Yina ^{[4
]}

Beloshapkin, Sergey ^{[4
]}

Simakov, Andrey ^{[5
]}

机构：

[1] SB RAS, Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Univ Limerick, Chem & Environm Sci Dept, Limerick, Ireland

[4] Univ Limerick, Mat & Surface Sci Inst, Limerick, Ireland

[5] UNAM, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico

来源：

CATALYSIS COMMUNICATIONS | 2017年 / 92卷

关键词：

Hydrogen production; Formic acid decomposition; Au/Al2O3; catalyst; Doping with potassium; AU CATALYSTS; PD/C CATALYST; DEHYDROGENATION; GENERATION; METAL; OXIDES; VAPOR; CERIA; GOLD; DFT;

D O I：

10.1016/j.catcom.2017.01.011

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：

Doping of a 25 wt.% Au/Al2O3 catalyst with potassium ions (3 wt.%) leads to a significantly increased rate by >1 order of magnitude of decomposition of formic acid at 358 K as compared to an undoped catalyst with the same mean Au particle size (2.6 nm). The doped catalyst gave stable and CO-free (<10 ppm CO) hydrogen production. The mechanism of the reaction changed. This was provided by a significantly increased content of a reaction intermediate - formate ions (HCOO-) controlled by K+ counterions in formic add condensed in the pores of the catalyst. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：86 / 89

页数：4

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