Analyzing enhancement of CO2 reforming of CH4 in Pd membrane reactors

被引：15

作者：

Raybold, TM ^{[1
]}

Huff, MC ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

来源：

AICHE JOURNAL | 2002年 / 48卷 / 05期

关键词：

D O I：

10.1002/aic.690480514

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

It is demonstrated that H-2 removal through Pd foil membranes can enhance the CO2 reforming of CH4. At 550degreesC and low flows over Pt/gamma-Al2O3 pellets, conversions were twice that of a conventional reactor, while H2O formation was suppressed, resulting in H-2/CO effluent ratios of 1.0. Larger sweep flows enhanced the reaction somewhat, and the replacement of Pt/gamma-Al2O3 with Pt/ZrO2 mitigated catalyst deactivation in H-2-poor operating environments. A quantitative correlation was established between reaction enhancement and the overall H-2 removal to production ratio. Based on this correlation, a simple membrane reactor equilibrium model was developed for comparison against experimental data. Subsequently, a unique and useful "on-the-fly" method of gauging membrane limitations, catalyst limitations, and modes of deactivation within a membrane reactor was demonstrated.

引用

页码：1051 / 1061

页数：11

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