Catalytic behavior of Ru supported on Ce0.8Zr0.2O2 for hydrogen production

被引：29

作者：

Carbajal-Ramos, I. A. ^{[1
,2
,3
]}

Gomez, M. F. ^{[4
]}

Condo, A. M. ^{[1
,2
,3
]}

Bengio, S. ^{[1
,2
,3
]}

Andrade-Gamboa, J. J. ^{[1
,2
]}

Abello, M. C. ^{[4
]}

Gennari, F. C. ^{[1
,2
,3
]}

机构：

[1] Ctr Atom Bariloche CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Inst Balseiro UNCuyo, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] Consejo Nacl Invest Cient & Tecn CONICET, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[4] Inst Invest Tecnol Quim UNSL CONICET, Chacabuco & Pedernera, RA-5700 San Luis, Argentina

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2016年 / 181卷

关键词：

Ruthenium; Ceria; Ethanol steam reforming; Hydrogen production; GAS-SHIFT REACTION; SOLID-SOLUTIONS; SURFACE-AREA; BIO-ETHANOL; H-2; PRODUCTION; REACTION-MECHANISM; ACETIC-ACID; STEAM; CO; NI;

D O I：

10.1016/j.apcatb.2015.07.025

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：

Ru (2 wt.%) on Ce0.8Zr0.2O2 catalysts were investigated to test their ethanol steam reforming (ESR) performance. The supports were obtained through two different synthesis methods: co-precipitation (PI) and mechanochemical reaction (MR). Characterization of the catalysts, before and after ESR, were performed using X-ray powder diffraction (XRPD), nitrogen physisorption, CO chemisorption, temperature programmed reduction (TPR), high resolution transmission electron microscopy (HR-TEM), thermogravimetry, and X-ray photoelectron spectroscopy (XPS) measurements. The Ru (2 wt.%) PI catalyst exhibited the highest activity and selectivity to hydrogen and no coke deposition was observed during catalytic operation, even when compared to Ni (8 wt.%) PI catalyst. A possible reaction pathway is proposed. The remarkably good catalytic performance of Ru (2 wt.%) PI is regarded as being due to a combination of factors: improved metal dispersion on Ce0.8Zr0.2O2, favorable metal-support interaction and water gas shift reaction promotion. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：58 / 70

页数：13

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