前驱体和沉淀剂浓度对CuO/ZnO/CeO_2-ZrO_2甲醇水蒸气重整制氢催化剂性能的影响  

Effect of precursor and precipitant concentration on the performance of CuO/ZnO/CeO_2-ZrO_2 catalyst for methanol steam reforming

作　　者：张磊[1,2] 雷俊腾 田园[1] 胡鑫[1] 白金[1] 刘丹[3] 杨义[4] 潘立卫[2] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]中国科学院大连化学物理研究所,辽宁大连116023 [3]天津工业大学环境与化学工程学院,天津300387 [4]中国石化催化剂有限公司抚顺分公司,辽宁抚顺113001

出　　处：《燃料化学学报》2015年第11期1366-1374,共9页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(21576211);辽宁省教育厅科学研究一般项目(L2014157);教育部新世纪优秀人才支持计划(NCET-11-1011);天津市应用基础与前沿技术研究(13JCYBJC41600)资助~~

摘　　要：采用共沉淀法制备了CuO/ZnO/CeO2-ZrO2甲醇水蒸气重整制氢催化剂,探讨了前驱体和沉淀剂浓度对催化剂性能的影响,并采用BET、XRD、H2-TPR和XPS等手段对催化剂进行了表征。结果表明,前驱体和沉淀剂浓度对催化剂的结构和性能影响很大,当前驱体浓度为0.1 mol/L,沉淀剂浓度为0.5 mol/L时,所得催化剂CO选择性最小,催化活性最佳。在360 h稳定实验中,甲醇最高转化率达100%,重整尾气中H2含量保持在74.5%以上,CO含量低于0.8%,催化剂稳定性良好。A series of CuO /ZnO /CeO2-ZrO2 catalysts for methanol steam reforming were prepared by a coprecipitation procedure,and the effect of precursor and precipitant concentration on the catalytic perforemance was investigated. All the catalysts were characterized by N2 adsorption,XRD,H2-TPR,and XPS. It is shown that the precursor and precipitant concentration remarkably influenced the catalyst structure and property. When the precursor concentration was 0. 1 mol /L and the precipitant concentration was 0. 5 mol /L,the catalyst exhibited the best activity with suppressed CO formation. During 360 h run time,the highest methanol conversion reached 100%,the H2 concentration was above 74. 5%,and the CO concentration was below 0. 8%in the reforming gas. The catalyst had excellent reforming performance without deactivation during 360 h run time.

关 键 词：甲醇水蒸气重整 催化剂 氢气 一氧化碳 

分 类 号：O643.32[理学—物理化学]