高能球磨法制备铁基CO高温变换催化剂及其性能表征  

Preparation and Characterization of Iron-based High-temperature Water-gas Shift Catalysts with Ball Milling Method

作　　者：李强[1] 付威[1] 李谦[1] 周国治[1,2] 丁伟中[1] 鲁雄刚[1] 

机构地区：[1]上海大学上海市现代冶金及材料制备重点实验室,上海200072 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《过程工程学报》2009年第3期613-617,共5页The Chinese Journal of Process Engineering

基　　金：国家高技术研究发展计划(863)基金资助项目(编号:2006AA11A189);上海市科学技术委员会重点基金资助项目(编号:06DZ12212);先进钢铁材料技术国家工程研究中心研究基金资助项目(编号:中050209)

摘　　要：用高能球磨法制备铁铬系CO高温变换催化剂,探讨了球磨时间和K2O助剂对催化剂活性的影响,并采用XRD,SEM,BET,TPR对其进行表征.结果表明,高能球磨法可以制备出高性能的铁铬系CO高温变换催化剂,其初活性随球磨时间的增加而增强,当球磨时间从5h增加到15h,催化剂活性从65.17%增加到74.78%.添加K2O助剂后,相同球磨时间(5h)的催化剂初活性由65.17%增加到87.02%.球磨5h后加入1%K2O的催化剂在530℃下耐热15h后,450℃时的活性为85.11%,可与国产B116型催化剂(85.70%)相媲美.The high-energy ball milling method was applied to prepare traditional iron--chromium-based CO high-temperature water gas shift reaction （WGSR） catalysts. The effects of milling time and K2O promoter on the catalytic activity of catalysts were investigated. The structure and morphology of catalysts were characterized by XRD, BET, and SEM, and the catalyst reducibility was measured by TPR. The results showed that the catalytic activity of catalysts without any treatment increased from 65.17% to 74.78% with the milling time increasing from 5 h to 15 h. In addition, the presence of K2O enhanced the catalytic activities, the catalytic activity of catalyst without any treatment increased from 65.17% to 87.02% for the catalyst milled for 5 h. After treating at 530 ℃ for 15 h, the CO conversion rate was still maintained at 85.11% at 450 ℃ for sample D, which bears comparison with the catalyst of B 116.

关 键 词：球磨法 水煤气 高温变换反应 铁基催化剂 

分 类 号：TQ426.94[化学工程]