Gas-phase electrocatalytic reduction of carbon dioxide using electrolytic cell based on phosphoric acid-doped polybenzimidazole membrane

被引：31

作者：

Gao, Dunfeng ^{[1
,2
]}

Cai, Fan ^{[1
,2
]}

Xu, Qinqin ^{[1
]}

Wang, Guoxiong ^{[1
]}

Pan, Xiulian ^{[1
]}

Bao, Xinhe ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF ENERGY CHEMISTRY | 2014年 / 23卷 / 06期

基金：

中国国家自然科学基金;

关键词：

carbon dioxide; gas-phase electrocatalytic reduction; platinum-molybdenum catalyst; Faradaic efficiency; formation rate; ELECTROCHEMICAL REDUCTION; CO2; REDUCTION; CONVERSION; CATALYSTS; NANOPARTICLES; ELECTRODES; TOLERANCE; COPPER;

D O I：

10.1016/S2095-4956(14)60201-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Carbon dioxide transformation to fuels or chemicals provides an attractive approach for its utilization as feedstock and its emission reduction. Herein, we report a gas-phase electrocatalytic reduction of CO2 in an electrolytic cell, constructed using phosphoric acid-doped polybenzimidazole (PBI) membrane, which allowed operation at 170 degrees C. Pt/C and PtMo/C with variable ratio of Pt/Mo were studied as the cathode catalysts. The results showed that PtMo/C catalysts significantly enhanced CO formation and inhibited CH4 formation compared with Pt/C catalyst. Characterization by X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy revealed that most Mo species existed as MoO3 in PtMo/C catalysts and the interaction between Pt and MoOx was likely responsible for the enhanced CO formation rate although these bicomponent catalysts in general had a larger particle size than Pt/C catalyst.

引用

页码：694 / 700

页数：7

共 23 条

[1] ELECTROCHEMICAL REDUCTION OF CARBON-DIOXIDE ON VARIOUS METAL-ELECTRODES IN LOW-TEMPERATURE AQUEOUS KHCO3 MEDIA [J].