Performance of bifunctional CuO-CeO2/γ-Al2O3 catalyst in dimethoxymethane steam reforming to hydrogen-rich gas for fuel cell feeding

被引：33
|
作者：
Pechenkin, A. A. [1 ,2 ]
Badmaev, S. D. [1 ,2 ]
Belyaev, V. D. [1 ,2 ]
Sobyanin, V. A. [1 ]
机构：
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2015年 / 166卷
关键词：
Hydrogen; Dimethoxymethane; Dimethyl ether; Methanol; Copper-ceria-alumina; DIMETHYL ETHER; PREFERENTIAL OXIDATION; CUO/CEO2; CATALYSTS; SOLID-ACID; METHANOL; CO; OPERATION; DESIGN;
D O I：
10.1016/j.apcatb.2014.12.008
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：
Dimetoxymethane steam reforming (DMM SR) to hydrogen-rich gas over a bifunctional CuO-CeO2/gamma-Al2O3 catalyst was studied. The performance of gamma-Al2O3, CeO2/gamma-Al2O3, and CuO/gamma-Al2O3 under DMM SR conditions was studied as well to elucidate the role of each catalyst component. BET, TPR, FTIR spectroscopy, XRD, TEM, EDXA and HAADF-STEM techniques were used for catalyst characterization. Complete DMM conversion was observed over the CuO-CeO2/-gamma-Al2O3 catalyst under atmospheric pressure, T= 300 degrees C, GHSV= 10,000 h(-1) and H2O/DMM = 5 mol/mol with hydrogen productivity of 15.5 L H-2/(g(cat).h) and CO content in the hydrogen-rich gas below the equilibrium value. DMM SR proceeds via a consecutive two-step reaction mechanism including DMM hydration to methanol and formaldehyde on gamma-Al2O3 acid sites and steam reforming of the formed methanol and formaldehyde to hydrogen-rich gas on alumina-supported mixed copper-cerium oxide species. The CuO-CeO2/-gamma-Al2O3 catalyst proved to be highly-promising for multi-fuel processor approach: steam reforming of DMM, dimethyl ether and methanol on the same catalyst under similar reaction conditions to hydrogen-rich gas for fuel cell feeding. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：535 / 543
页数：9
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