固相法合成铜铝尖晶石催化甲醇重整反应

郗宏娟 李光俊 庆绍军 侯晓宁 赵金珍 刘雅杰 高志贤

引用本文: 郗宏娟, 李光俊, 庆绍军, 侯晓宁, 赵金珍, 刘雅杰, 高志贤. 固相法合成铜铝尖晶石催化甲醇重整反应[J]. 燃料化学学报, 2013, 41(8): 998-1002. shu
Citation:  XI Hong-juan, LI Guang-jun, QING Shao-jun, HOU Xiao-ning, ZHAO Jin-zhen, LIU Ya-jie, GAO Zhi-xian. Cu-Al spinel catalyst prepared by solid phase method for methanol steam reforming[J]. Journal of Fuel Chemistry and Technology, 2013, 41(8): 998-1002. shu

固相法合成铜铝尖晶石催化甲醇重整反应

    通讯作者: 高志贤
摘要: 以氢氧化铜和拟薄水铝石为原料(Cu/Al物质的量比为1/2),采用固相法经过不同温度焙烧后获得了一系列Cu-Al氧化物催化剂.当焙烧温度由500 ℃提高到900 ℃时,催化剂的主要铜物种由CuO渐变为CuAl2O4,比表面积由75.0 m2/g降低至16.6 m2/g.在甲醇重整反应过程中,以CuAl2O4为主要成分且具有较高比表面积的催化剂表现了优异的催化性能.另外,以CuAl2O4为主要成分的催化剂不经过预还原处理时,在反应过程中同时存在活性铜的释放和烧结,其催化活性呈现先增加后降低的趋势.在本研究催化剂制备条件下,优选800 ℃焙烧的催化剂,其催化性能优于商业Cu-Zn-Al催化剂,且具有可再生性.当催化剂不经过预还原处理时,在水醇物质的量比为1、240 ℃、1.01×106 Pa、质量空速为1.75 h-1的条件下,甲醇起始转化率为55.2%;反应进行288.3 h时,甲醇转化率升高至79.3%;反应继续运行至1 000.5 h时,甲醇转化率降低至63.9%.

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  • 收稿日期:  2013-05-31
  • 网络出版日期:  2013-06-23
通讯作者: 陈斌, bchen63@163.com
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