Innovative ZrO2-supported CuPd catalysts for the selective production of hydrogen from methanol steam reforming

被引：76

作者：

Azenha, C. S. R. ^{[1
]}

Mateos-Pedrero, C. ^{[1
]}

Queiros, S. ^{[1
]}

Concepcion, P. ^{[2
]}

Mendes, A. ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, LEPABE Dept Engn Quim, Rua Dr Roberto Frias, P-4200465 Oporto, Portugal

[2] UPV CSIC, Inst Tecnol Quim, Avda Naranjos S-N, Valencia 46022, Spain

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2017年 / 203卷

关键词：

CO-selectivity; Zirconia; Methanol steam reforming; Palladium; Copper; SUPPORTED PD; PERFORMANCE; ZIRCONIA; PDZN/ZNO; PD/ZNO; CO;

D O I：

10.1016/j.apcatb.2016.10.041

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：

Low temperature methanol steam reforming (MSR) is an attractive source of nearly CO-free H-2 for fuel cells application. However, there is still a lack of efficient catalysts able to operate at low temperatures (<= 220 degrees C), where MSR is equilibrium-limited. Pd-based catalysts are regarded as an alternative to conventional Cu-based catalysts for MSR, but their low MSR selectivity limit their application. This work studies the effect of Cu as MSR promoter of Pd/ZrO2 catalysts, with special emphasis on the improvement of MSR selectivity. The influence of ZrO2 structure support, monoclinic and cubic, on the MSR behavior is also studied. CuPd/ZrO2-m catalysts with enhanced activity and MSR selectivity are developed. This superior performance was attributed to a strong interaction between Pd and Cu and an enhanced dispersion of the metal phase when ZrO2 with monoclinic structure was used as support. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：400 / 407

页数：8

共 21 条

[1] Transformation of yttrium-doped hydrated zirconium into tetragonal and cubic nanocrystalline zirconia [J].