耐硫甲烷化催化剂的成型工艺探究  

Forming Process of Sulfur-Resistant Methanation Catalysts

作　　者：李振花 谢春芳[1,2] 王玮涵 王保伟 马新宾 Li Zhenhua;Xie Chunfang;Wang Weihan;Wang Baowei;Ma Xinbin(Key Laboratory for Green Chemical Technology of Ministry of Education,Tianjin 300350,China;School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China)

机构地区：[1]绿色合成与转化教育部重点实验室,天津300350 [2]天津大学化工学院,天津300350

出　　处：《天津大学学报（自然科学与工程技术版）》2018年第1期18-26,共9页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(21576203);国家高技术研究发展计划(863计划)资助项目(2015AA050504)~~

摘　　要：采用挤出法对Ce O2-Al_2O_3载体和MoO_3/ZrO_2催化剂进行了成型处理并研究了成型工艺对高温、低温催化剂耐硫甲烷化性能的影响,考察了不同成型助剂对负载型Mo基催化剂成型效果和耐硫甲烷化活性的影响,并对所制备的成型催化剂进行稳定性考察.结果表明,铈铝复合载体的适宜成型条件是水粉质量比约0.45~0.55、黏合剂为10%,(质量分数,下同)的拟薄水铝石,胶溶剂为10%,的硝酸,润滑剂为1%,的田菁粉;MoO_3/ZrO_2低温催化剂的成型工艺条件是拟薄水铝石添加量为10%,,硝酸添加量为5%,,田菁粉添加量为1%,.在此条件下制备的高温和低温成型催化剂均具有良好的稳定性,这为耐硫甲烷化催化剂的工业放大研制提供了重要依据.The CeO2-Al2O3,composite support and MoO3/ZrO2,catalyst were formed by extrusion method and the effectof forming process on the sulfur-resistant methanation performance of both high temperature catalyst and lowtemperature catalyst was studied.The effects of different additives on the forming process of Mo-based catalysts and sulfur-resistant methanation activity were investigated.The stability of the prepared catalyst was tested.The results showed that the optimum forming conditions of CeO2-Al2O3composite support were as follows:powder/water mass ratio of0.45-0.55with10%,pseudo-boehmite as a binder,10%,nitric acid as a peptizer and1%,sesbania powder as a lubricant.The optimum forming conditions of MoO3/ZrO2catalyst were:10%,pseudo-boehmite,5%,nitric acid and1%,sesbania powder.The results indicated that both the high temperature catalyst and low temperature catalyst prepared under the optimum conditions were stable during the reaction process,which provides important basis for scale-up production of sulfur-resistant methanation catalyst for industrial application.

关 键 词：耐硫甲烷化 铈铝复合载体 钼基催化剂 催化剂成型 

分 类 号：TQ5[化学工程]