燃料化学学报2011，Vol.39Issue(4)：293-299,7.
非贵金属催化剂用于CO选择性氧化脱除的研究
Preferential oxidation of CO in H2-rich stream on non-noble metal catalyst
摘要
Abstract
A non-noble metal catalyst was prepared by loading cobalt and nickel on activated carbon through saturated impregnation; it was characterized by XRD, SEM and TPD and used in preferential oxidation of CO in H2-rich stream. The influence of water vapor and/or CO2 on the performance of this non-noble metal catalyst was also examined. The results indicted that NiO and finely dispersed Co3O4 are formed in the catalyst; the catalyst exhibits stronger adsorption ability to O2 than to CO2 and the adsorption ability to O2 increases with the loading of metal oxides. The non-noble metal catalyst exhibits high activity and selectivity in the preferential oxidation of CO. Over the catalyst CN250 ( 35 ) with a metal oxide loading of 35 ％, CO concentration can be decreased to 40x 10-6 at 433 K ～473 K; meanwhile, the selectivity of O2 consumed by CO oxidation exceeds 50％ at 473 K. Moreover, the non-noble metal catalyst exhibits good resistance to water vapor and CO2 in the stream. These suggest that current catalyst may meet the requests in purification of H2 feed for PEMFC fuel cell application.关键词
富氢气/一氧化碳(CO)/选择性氧化/非贵金属催化剂Key words
excess hydrogen gas/ carbon monoxide (CO)/ selective catalytic oxidation/ non-noble metal catalyst分类
化学引用本文复制引用
周桂林,蒋毅,邱发礼..非贵金属催化剂用于CO选择性氧化脱除的研究[J].燃料化学学报,2011,39(4):293-299,7.基金项目
重庆市教委科学技术研究(KJ100729) （KJ100729）
重庆高校创新团队建设计划(KGTD201020). （KGTD201020）
