CuO-SiO_(2)-CeO_(2)催化剂的设计、制备及性能研究  

Design,Preparation and Performance of CuO-SiO_(2)-CeO_(2) Catalyst

作　　者：卢畅 张财顺 刘道胜[1] 张磊[1] 高志贤 Lu Chang;Zhang Caishun;Liu Daosheng;Zhang Lei;Gao Zhixian(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2022年第1期29-34,共6页Journal of Petrochemical Universities

基　　金：国家自然科学基金项目(21376237);辽宁省博士科研启动基金项目(201601322)。

摘　　要：采用水热合成法制备了SiO_(2)-CeO_(2)载体,并利用浸渍法负载活性组分CuO得到CuO-SiO_(2)-CeO_(2)催化剂。通过XRD、BET和H_(2)-TPR等手段对载体和催化剂进行表征及性能测试,最后探究了SiO_(2)摩尔分数对催化剂的比表面积以及甲醇水蒸气重整制氢实验中催化性能的影响。研究发现,适量添加SiO_(2)可以增加载体和催化剂的比表面积,降低催化剂活性组分CuO的还原温度,提高CH_(3)OH的转化率。当SiO_(2)摩尔分数为2.5%时,催化剂CuO5.0%-SiO_(2)2.5%-CeO_(2)的比表面积为112.8 m2/g,CH_(3)OH转化率为75.1%。继续提高催化剂中SiO_(2)的摩尔分数,催化剂的比表面积减小,CH_(3)OH转化率降低。SiO_(2)-CeO_(2) carriers were prepared by hydrothermal synthesis method,and CuO-SiO_(2)-CeO_(2) catalysts were synthesized by impregnation method with active component CuO.The carriers and catalysts were characterized by XRD,BET and H2-TPR methods.The effects of the addition amount of SiO_(2) for the specific surface area of the catalyst and the catalytic performance of the catalysts in methanol steam reforming for hydrogen production were also investigated.The obtained results indicated that appropriate addition of SiO_(2) can increase the specific surface area of the support and catalyst,reduce reduction temperature of the active component CuO,and increase the conversion rate of CH_(3)OH.When the amount of SiO_(2) is 2.5%,the specific surface area of CuO 5.0%-SiO_(2)2.5%-CeO_(2) is 112.8 m^(2)/g,and the conversion rate of CH_(3)OH is 75.1%.Both of the specific surface of the catalyst and the conversion rate of CH_(3)OH will decrease with the content of SiO_(2) continue to improving in the catalyst.

关 键 词：甲醇水蒸气重整 CeO_(2) 水热合成法 催化剂制备 

分 类 号：O643[理学—物理化学]