Steam reforming of ethanol over Co3O4-Fe2O3 mixed oxides

被引：40

作者：

Abdelkader, A. ^{[1
,2
]}

Daly, H. ^{[1
]}

Saih, Y. ^{[1
,3
]}

Morgan, K. ^{[1
]}

Mohamed, M. A. ^{[2
]}

Halawy, S. A. ^{[2
]}

Hardacre, C. ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Chem & Chem Engn, CenTACat, Belfast BT9 5AG, Antrim, North Ireland

[2] South Valley Univ, Fac Sci, Dept Chem, Qena 83523, Egypt

[3] KAUST, KAUST Catalysis Ctr, Jeddah 239556900, Saudi Arabia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 20期

基金：

英国工程与自然科学研究理事会;

关键词：

Steam reforming; Ethanol; Hydrogen; Cobalt-iron catalyst; DRIFTS-MS; SUPPORTED COBALT CATALYSTS; CO-BASED CATALYSTS; HYDROGEN-PRODUCTION; IRON-OXIDES; BIO-ETHANOL; FT-IR; FE; TEMPERATURE; PERFORMANCE; CO3O4;

D O I：

10.1016/j.ijhydene.2013.04.009

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：

Co3O4, Fe2O3 and a mixture of the two oxides Co-Fe (molar ratio of Co3O4/Fe2O3 = 0.67 and atomic ratio of Co/Fe = 1) were prepared by the calcination of cobalt oxalate and/or iron oxalate salts at 500 degrees C for 2 h in static air using water as a solvent/dispersing agent. The catalysts were studied in the steam reforming of ethanol to investigate the effect of the partial substitution of Co3O4 with Fe2O3 on the catalytic behaviour. The reforming activity over Fe2O3, while initially high, underwent fast deactivation. In comparison, over the Co-Fe catalyst both the H-2 yield and stability were higher than that found over the pure Co3O4 or Fe2O3 catalysts. DRIFTS-MS studies under the reaction feed highlighted that the Co Fe catalyst had increased amounts of adsorbed OH/water; similar to Fe2O3. Increasing the amount of reactive species (water/OH species) adsorbed on the Co-Fe catalyst surface is proposed to facilitate the steam reforming reaction rather than decomposition reactions reducing by-product formation and providing a higher H-2 yield. Copyright (C) 2013, The Authors. Published by Elsevier Ltd. All rights reserved.

引用

页码：8263 / 8275

页数：13

共 43 条

[11] Effect of calcination temperature on Co(II) oxalate dihydrate-iron(II) oxalate dihydrate mixture DTA-TG, XRD, Mossbauer, FT-IR and SEM studies (Part II) [J].