摘要
采用溶液燃烧法制备CO甲烷化Ni基催化剂,考察了助剂MgO添加量对Ni-Al2O3催化剂结构和性能的影响,并初步探讨了MgO添加量-催化剂结构-CO甲烷化性能的构效关系。结果显示,质量分数6%MgO添加量的催化剂具有适宜的MgO晶体含量、适当的还原温度和较高的比表面积,其CO转化率、CH4选择性和收率分别高达99%,97%和94.5%。寿命实验表明:在24 h反应时间内,质量分数6%MgO添加量的催化剂CO转化率和CH4选择性分别高达97%和95%以上,表现出较高的活性、选择性和稳定性。
CO methanation Ni-based catalyst was prepared by solution combustion method.Effects of MgO addition on the structure and performance of the Ni-Al 2 O 3 catalyst were investigated.The structure-activity relationship of MgO addition-catalyst structure-CO methanation performance was discussed.Results show that the catalyst with 6%MgO addition has suitable MgO crystal content,proper reduction temperature and high specific surface area,and its CO conversion,CH 4 selectivity and yield were as high as 99%,97%and 94.5%,respectively.Stability test shows that the CO conversion and CH 4 selectivity of the catalyst with 6%MgO addition are as high as 97%and 95%,respectively within 24 h reaction time,showing high activity,selectivity and stability.
作者
刘彪
莫文龙
陈丽娟
王光耀
张磊玉
马凤云
LIU Biao;MO Wen-long;CHEN Li-juan;WANG Guang-yao;ZHANG Lei-yu;MA Feng-yun(Key Laboratory of Coal Clean Conversion&Chemical Engineering Process,College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046,Xinjiang,China)
出处
《化学工程》
CAS
CSCD
北大核心
2020年第3期62-67,共6页
Chemical Engineering(China)
基金
新疆维吾尔自治区高校科研计划资助项目(XJEDU2018Y001)
国家级大学生创新训练计划资助项目(201810755024)。
