Preferential Oxidation of CO in a Hydrogen-Rich Gas Through Au/NaY Catalytic Membranes

This paper describes novel Au/NaY catalytic membranes for preferential oxidation of CO （CO-PROX） in an H2-rich gas. NaY zeolite membranes with a high CO2/N2 separation factor were loaded with nanosized Au particles using an ion-exchanged method. X-ray diffraction analyses showed that the structure o...

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Published in:Tsinghua science and technology 2010-08, Vol.15 (4), p.397-403
Main Author: 朱自萍 刘艳梅 杨占照 顾学红 徐南平
Format: Article
Language:English
Subjects:
CO oxidation
membrane reactor
nano-sized gold
NaY zeolite membrane
NaY分子筛
一氧化碳
催化膜
富氢气体
射线衍射分析
离子交换过程
纳米金粒子
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description This paper describes novel Au/NaY catalytic membranes for preferential oxidation of CO （CO-PROX） in an H2-rich gas. NaY zeolite membranes with a high CO2/N2 separation factor were loaded with nanosized Au particles using an ion-exchanged method. X-ray diffraction analyses showed that the structure of the NaY zeolite was not damaged by the ion exchange process. CO-PROX experiments showed that the catalytic membranes had excellent catalytic performance for selective oxidation of CO. The CO/H2 molar ratio on the permeate side decreased with increasing operating temperature in the range of 80-200℃. At 200℃, almost no CO was detected from the permeate stream of a catalytic membrane with the feed con- taining 0.67% CO, 1.33% 02, 32.67% H2, and He in balance. Thus, these Au/NaY catalytic membranes show a promise for CO removal from hydrogen fuels.
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subjects CO oxidation
membrane reactor
nano-sized gold
NaY zeolite membrane
NaY分子筛
一氧化碳
催化膜
富氢气体
射线衍射分析
离子交换过程
纳米金粒子
title Preferential Oxidation of CO in a Hydrogen-Rich Gas Through Au/NaY Catalytic Membranes
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