Catalytic activation of ceramic H2 membranes for CMR processes

被引：19

作者：

Escolastico, S. ^{[1
]}

Kjolseth, C. ^{[2
]}

Serra, J. M. ^{[1
]}

机构：

[1] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Ave los Naranjos S-N, E-46022 Valencia, Spain

[2] Forskningsparken, Coorstek Membrane Sci, Gaustadalleen 21, NO-0349 Oslo, Norway

来源：

JOURNAL OF MEMBRANE SCIENCE | 2016年 / 517卷

关键词：

Hydrogen; Catalyst; Proton conductor; Catalytic membrane reactor; Methane; HOLLOW-FIBER MEMBRANES; HYDROGEN-PERMEATION; OXYGEN PERMEATION; CERMET MEMBRANE; ANODES; STABILITY; PERMEABILITY; PEROVSKITE; CONVERSION; TRANSPORT;

D O I：

10.1016/j.memsci.2016.06.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The application of catalytic membrane reactors can overcome some of the disadvantages that reactions for the direct conversion of methane to fuels and petrochemicals present. Hydrogen separation membranes can shift the reaction equilibrium by hydrogen removal, improving the separation, selectivity and yield of the reactions. La5.5WO11.25-delta/La0.87Sr0.13CrO3-delta (LWO/LSC) based membranes present a high H-2 flux within the temperature range where CMR can be applied. However, the catalytic activity of the material is very low and it has to be improved. This work presents the development of different catalytic layers based on LSC material and the study of their influence on the H-2 flux obtained by using 60/40-LWO/LSC membranes. Membranes coated with porous layer made of Ni-infiltrated La0.75Ce0.1Sr0.15CrO3-delta exhibited the best permeation flux but still 20% lower than the one reached using Pt layers. Stability of the catalytic layers is also evaluated under H2 permeation conditions and under high steam content methane. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：57 / 63

页数：7

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