助剂M（M=Cr、 Zn、Y、La）对甲醇水蒸气重整制氢CuO/CeO2催化剂的影响  

Effect of promoter M（ M = Cr,Zn,Y,La） on CuO/CeO2 catalysts for hydrogen production from steam reforming of methanol

作　　者：王东哲 冯旭 张健[1] 陈琳 张磊[1] 王宏浩[1] 白金[1] 张财顺 张政一 WANG Dong-zhe;FENG Xu;ZHANG Jian;CHEN Lin;ZHANG Lei;WANG Hong-hao;BAI Jin;ZHANG Cai-shun;ZHANG Zheng-yi(College of Chemistry,Chemical Engineering,and Environmental Engineering,Liaoning Shihua University,Fushun 113001,China;Department of Chemistry and Materials Engineering,Yingkou Institute of Technology,Yingkou 115014,China;Plastic Factory of Petro China Daqing Petrochemical Company,Daqing 163000,China)

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]营口理工学院化学与材料工程系,辽宁营口115014 [3]中国石油大庆石化公司塑料厂,黑龙江大庆163000

出　　处：《燃料化学学报》2019年第10期1251-1257,共7页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(21376237);辽宁省教育厅科学研究经费项目(L20190338);辽宁省自然科学基金(2019-MS-221)资助~~

摘　　要：采用顺序浸渍法制备了掺杂助剂M(M=Cr、Zn、Y、La)的CuO/CeO2催化剂,并利用XRF、XRD、BET、H2-TPR和XPS等手段对催化剂进行了表征,考察了不同助剂对CuO/CeO2催化剂结构、性质和性能的影响。结果表明,助剂的掺杂主要影响CuO/CeO2催化剂的CuO分散、催化剂的还原性质、CuO与CeO2间的相互作用和催化剂表面氧空穴含量。掺杂助剂Cr和Zn后,提高了CuO在催化剂表面的分散度,使CuO和CeO2间的相互作用加强,表面氧空穴增加,进而使得催化活性提高。而掺杂助剂Y和La后,降低了CuO在催化剂表面的分散度,使CuO和CeO2间的相互作用减弱,表面氧空穴减少,进而使得催化活性降低。其中,掺杂Cr助剂的催化剂催化性能较优,当反应条件为260℃,n(CH3OH)∶n(H2O)=1∶1.2,甲醇水蒸气气体空速为1760h-1时,最终转化率可达100%,重整尾气中CO含量为0.15%,与CuO/CeO2催化剂相比,转化率提高了10%,重整尾气中CO含量降低了0.34%。M /CuO/CeO2 ( M =Cr,Zn,Y,La) catalyst was prepared by sequential impregnation method.The catalysts were characterized by XRF,XRD,BET,H2-TPR and XPS.The effects of different promoters on the structure and properties of CuO/CeO2 catalysts were investigated.The results show that the doping of promoters mainly affects the dispersion of CuO,the reduction properties of the catalyst,the interaction between CuO and CeO2,and the oxygen hole content on the surface of the catalyst.After doping additives Cr and Zn,improving the dispersion of CuO on catalysts,and the interaction between CuO and CeO2 strengthens,the surface oxygen holes increase,which in turn increases the catalytic activity.After doping the additives Y and La,decreasing the dispersion of CuO on catalysts,the interaction between CuO and CeO2 is weakened,and the surface oxygen holes are reduced,thus the catalytic activity is reduced.Among them,the catalyst doped with promoter Cr has better catalytic activity.When the reaction conditions are260 ℃,n (CH 3OH)∶ n (H2O)=1 ∶1.2 and the space velocity of methanol vapor gas is1760 h -1,the final conversion can reach100%,the CO content in reforming tail gas is 0.15%.Compared with CuO/CeO 2 catalyst,the conversion rate is increased by10%,and the CO content in reforming tail gas is reduced by 0.34%.

关 键 词：助剂 甲醇水蒸气重整 氢气 一氧化碳 

分 类 号：O643[理学—物理化学]