焙烧温度对Ru/CeO_(2)催化剂在高通量甲醇水蒸气重整制氢反应中催化性能的影响  

Effects of calcination temperature on catalytic performance of Ru/CeO_(2) catalysts for hydrogen production by high flux steam reforming of methanol

作　　者：李佳祺 刘明新 初奇瑞 尹扬凯 孙梁毅 赵广富 张娜[2] 张磊[1] LI Jiaqi;LIU Mingxin;CHU Qirui;YIN Yangkai;SUN Liangyi;ZHAO Guangfu;ZHANG Na;ZHANG Lei(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,Liaoning,China;Department of Chemical Engineering,Fushun Vocational Technology Institute,Fushun 113122,Liaoning,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]抚顺职业技术学院化学工程系,辽宁抚顺113122

出　　处：《低碳化学与化工》2025年第3期23-29,共7页Low-Carbon Chemistry and Chemical Engineering

基　　金：国家自然科学基金(22379059);辽宁省应用基础研究计划(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);辽宁石油化工大学引进人才科研启动基金资助项目(2019-XJJL-028);天津市京津冀协同创新项目(22PTXTHZ00020);大学生创新创业训练计划(S202310148038)。

摘　　要：高效催化剂的研制是高通量甲醇水蒸气重整制氢反应的关键技术之一。以RuCl_(3)为原料、CeO_(2)为载体,采用沉积-沉淀法制备了Ru/CeO_(2)催化剂,通过XRD、N_(2)吸/脱附、H2-TPR和XPS等对催化剂性质进行了分析,并考察了焙烧温度对催化剂在高通量甲醇水蒸气重整制氢反应中催化性能的影响。结果表明,随焙烧温度的升高,RuO_(x)物种的还原性能先变强后变弱,表面氧空位相对含量先升高后降低。其中,Ru/CeO_(2)-500催化剂中RuO_(x)物种的还原性能较强,催化剂表面氧空位相对含量较高,催化活性较好。在反应温度为420℃、水醇物质的量比为1.2:1.0和甲醇水质量空速为6.0 h^(-1)的条件下,Ru/CeO_(2)-500催化剂的甲醇转化率为91.8%。The development of high efficiency catalyst is one of the key technologies of hydrogen production by high flux steam reforming of methanol.Using RuCl_(3) as raw material and CeO_(2) as support,Ru/CeO_(2) catalysts were prepared by deposition-precipitation method.The properties of the catalysts were analyzed by XRD,N_(2) adsorption/desorption,H2-TPR and XPS,and the effect of calcination temperature on the catalytic performance of the catalysts in high flux steam reforming of methanol for hydrogen production was investigated.The results show that with the increase of calcination temperature,the reducing performance of RuO_(x) species increases first and then decreases,and the surface oxygen vacancy relative content increases first and then decreases.Among them,RuO_(x) species in Ru/CeO_(2)-500 catalyst have stronger reducing performance,higher surface oxygen vacancy relative content on the catalyst surface,and better catalytic activity.The methanol conversion rate of Ru/CeO_(2)-500 catalyst is 91.8%under the conditions of reaction temperature of 420℃,mole ratio of water and alcohol of 1.2:1.0 and weight hourly space velocity of methanol and water of 6.0 h^(-1).

关 键 词：甲醇转化 Ru/CeO_(2)催化剂 焙烧温度 甲醇水蒸气重整 

分 类 号：TQ116.2[化学工程—无机化工]