沉淀剂对CuO/CeO_(2)催化剂织构性质及CO催化氧化性能的影响  

The Effect of Precipitators on the Texture Properties and CO Catalytic Oxidation Performance of CuO/CeO_(2)Catalysts

作　　者：于东北 李学 杨昕毓 张财顺 韩蛟 王宏浩 张磊[1] 高志贤 YU Dongbei;LI Xue;YANG Xinyu;ZHANG Caishun;HAN Jiao;WANG Honghao;ZHANG Lei;GAO Zhixian(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China;PetroChina Tianjin Gas Pipeline Co.,Ltd.,Tianjin 300457,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 [2]中石油天津天然气管道有限公司,天津300457

出　　处：《辽宁石油化工大学学报》2023年第6期48-53,共6页Journal of Liaoning Petrochemical University

基　　金：国家自然科学基金项目(22379059);辽宁省应用基础研究计划项目(2023JH2/101300224);辽宁省教育厅服务地方项目(揭榜挂帅)(LJKFZ20220201);辽宁省教育厅面上项目(LJKMZ20220728);山西省应用基础研究青年基金项目(20210302124338)。

摘　　要：以KOH和K_(2)CO_(3)为沉淀剂,采用水热法制备了催化剂CuCe-OH和CuCe-CO_(3),通过XRD、BET、H_(2)-TPR和TG-DTA等技术对催化剂进行表征,使用固定床反应器对催化剂进行了CO催化氧化性能评价。结果表明,沉淀剂的类别不仅对催化剂的织构性质有较大影响,而且还决定能否成功制备出不含杂晶相的Cu-Ce催化剂;CuCe-OH和CuCe-CO_(3)催化剂的比表面积分别为96.5 m^(2)/g和17.3 m^(2)/g,二者差别明显;在空速为60000 mL/(g·h)、CO体积分数为0.6%、O_(2)体积分数为1.5%、Ar体积分数为97.9%的评价条件下,CuCe-OH催化剂表现出较好的催化活性,140℃时CO转化率达到99.0%。Catalysts CuCe-OH and CuCe-CO_(3)were prepared by hydrothermal method using KOH and K_(2)CO_(3)as precipitating agents.The catalyst was characterized by XRD,BET,H_(2)-TPR and TG-DTA,and its CO catalytic oxidation performance was evaluated by a fixed bed reactor.The results show that the type of precipitator not only has a great influence on the texture properties of the catalyst,but also determines whether the CuCe catalyst without heterocrystalline phase can be successfully prepared.The specific surface areas of CuCe-OH and CuCe-CO_(3)catalysts were 96.5 m^(2)/g and 17.3 m^(2)/g,respectively.Under the evaluation conditions of 60000 mL/(g·h),CO volume fraction of 0.6%,O_(2) volume fraction of 1.5%,Ar volume fraction of 97.9%,CuCe-OH catalyst showed good catalytic activity,and CO conversion reached 99.0%at 140℃.

关 键 词：沉淀剂 织构性质 催化氧化 催化活性 

分 类 号：TE08[石油与天然气工程]