不同形貌ZSM-5分子筛的合成及甲醇制汽油催化性能  

Synthesis of ZSM-5 zeolites with different morphology and the catalytic performance for methanol to gasoline(MTG)reaction

作　　者：黄世勇 任育宏 黄尚顺 阮恒 卓民权 伊晓东[1] 方维平[1] HUANG Shi-yong;REN Yu-hong;HUANG Shang-shun;RUAN Heng;ZHUO Ming-quan;YI Xiao-dong;FANG Wei-ping(College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;Guangxi Research Institute of Chemical Industry Co., Ltd, Nanning 530001, China)

机构地区：[1]厦门大学化学化工学院,福建厦门361005 [2]广西化工研究院有限公司,广西南宁530001

出　　处：《广西大学学报（自然科学版）》2020年第2期414-420,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：广西创新驱动发展专项(桂科AA19046002);广西科技基地和人才专项(桂科AD17195067,桂科AD16380003)。

摘　　要：为研究ZSM-5分子筛颗粒形貌对其甲醇制汽油(MTG)催化性能的影响,本文采用无模板—水热法、溶胶凝胶法、模板—水热法合成了颗粒形貌分别为平板六边形、类球形、球形的ZSM-5分子筛,用SEM,BET,XRD和NH3-TPD对所合成分子筛进行了表征,对催化剂活性进行了评价,并与工业品分子筛进行了对比。实验结果表明:分子筛的比表面积和孔容是决定其使用寿命和催化性能的主要因素,比表面积和孔容越大,催化性能越好,催化活性保持时间越长,分子筛颗粒形貌对催化甲醇制汽油性能有较大影响。研究结果对ZSM-5分子筛的制备和应用具有较好的指导意义。In order to study the influence of ZSM-5 zeolites particle morphology on its catalytic performance of MTG(methanol to gasoline)reaction,three kinds of HZSM-5 zeolites with different morphology(plate-hexagonal,near spherical and spherical)were synthesized by template-free hydrothermal method,sol-gel method and template-hydrothermal method,and characterized by SEM,BET,XRD and NH3-TPD.The experiments show that the specific surface area and pore volume of zeolites are the main factor that determine its service life and catalytic performance.The larger the specific surface area and pore volume,the better the catalytic performance and the longer the catalytic service life.The morphology of molecular sieve particles has a great influence on the performance of catalytic methanol gasoline production.These consequences have good value for the synthesis and application of ZSM-5 zeolites.

关 键 词：ZSM-5分子筛 合成 形貌 催化性能 

分 类 号：TQ426.6[化学工程]