Steam and CO2 reforming of methane over a Ru/ZrO2 catalyst

被引：62

作者：

Jakobsen, Jon Geest ^{[1
,2
]}

Jorgensen, Tommy L. ^{[1
]}

Chorkendorff, Ib ^{[2
]}

Sehested, Jens ^{[1
]}

机构：

[1] Haldor Topsoe Res Labs, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Dept Phys, CINF, DK-2800 Lyngby, Denmark

来源：

APPLIED CATALYSIS A-GENERAL | 2010年 / 377卷 / 1-2期

基金：

新加坡国家研究基金会;

关键词：

Methane steam reforming; TEM; Kinetics; Ruthenium; CARBON-MONOXIDE; SYNTHESIS GAS; CHEMICAL CONVERSION; SITE REQUIREMENTS; RU CATALYSTS; ADSORPTION; HYDROGEN; KINETICS; COADSORPTION; DESORPTION;

D O I：

10.1016/j.apcata.2010.01.035

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：

The kinetics of methane steam reforming over a Ru/ZrO2 catalyst was studied at 1.3 bar total pressure and in the temperature range 425-575 degrees C. These data were fitted by combining a reactor model with a series of kinetic models. The best fit was obtained by a model with methane dissociative adsorption as the rate limiting step and with CO and H adspecies partly blocking the active sites. The Ru/ZrO2 catalyst was characterized by TEM and H-2 chemisorption. By comparison of ex situ and in situ TEM, it is evident that Ru particles with diameters of <2 nm are difficult to observe with ex situ TEM due to oxidation when exposed to air. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：158 / 166

页数：9

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