中文摘要：

以NaY分子筛膜为基体，采用离子交换法制备Au—Fe／NaY催化膜，研究Fe3＋前驱体浓度对催化膜上Au负载量及其对CO选择性氧化催化性能的影响，同时考察反应温度、进料O2浓度对催化膜CO选择性氧化反应的影响。结果表明：随着Fe3＋前驱体浓度的增加，Au的负载量增加，当Fe3＋前驱体溶液浓度为5．0mmol／L时，所制备的催化膜催化性能最好；催化膜在12h的反应时间内具有稳定的催化活性；产物中n（CO）／n（H2）随反应温度的升高先降低后升高，在80℃达到最小，且随进料O2浓度的增加而降低。

英文摘要：

Au-Fe/NaY catalytic membranes were prepared by an ion-exchange method using NaY zeolite membranes as supports. The effects of Fe3＋ precursor concentration on the gold loading and the activity of catalytic membranes for preferential oxidation of CO （PROX-CO） were studied. The influences of the reaction temperature and O2 concentration in feed were also investigated. The results showed that gold load- ing increased with the increasing of Fe3＋ precursor concentration. The highest catalytic activity was a- chieved on the Fe3＋ precursor concentration of 5.0 mmol/L. Steady catalytic activity was observed over the catalytic membrane during 12 h reaction. The n（CO）/n（H2） in the products decreased firstly with the increasing of reaction temperature, and then increased subsequently, it had a minimum value at 80℃. Besides,the n（CO）/n（H2） decreased with the increasing of O2 concentration in feed.