Highly enhanced ammonia decomposition in a bimodal catalytic membrane reactor for COx-free hydrogen production

被引：61

作者：

Li, Gang ^{[1
]}

Kanezashi, Masakoto ^{[1
]}

Tsuru, Toshinori ^{[1
]}

机构：

[1] Hiroshima Univ, Dept Chem Engn, Higashihiroshima 7398527, Japan

来源：

CATALYSIS COMMUNICATIONS | 2011年 / 15卷 / 01期

关键词：

COx-free hydrogen; Ammonia decomposition; Bimodal catalytic membrane reactor; Silica membrane; FUEL-CELL APPLICATIONS; STORAGE; GENERATION; METHANE;

D O I：

10.1016/j.catcom.2011.08.011

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：

Ammonia decomposition in a bimodal catalytic membrane reactor (BCMR) consisting of a Ru/gamma-Al2O3/alpha-Al2O3 bimodal catalytic support and a hydrogen-selective silica membrane in a single unit was proposed for COx-free hydrogen production in the present study. The bimodal catalytic membrane showed a H-2 permeance of 6.2 x 10(-7) mol/(m(2) s Pa) at 500 degrees C, with H-2/NH3 and H-2/N-2 permeance ratios of 200 and 720, respectively. Ammonia conversion was surprisingly enhanced form 45 to 95% at 450 degrees C in the BCMR after selective H2 extraction. The BCMR showed excellent stability with respect to both gas permeation properties and catalytic activities. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：60 / 63

页数：4

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