复合模板剂诱导合成SAPO-34分子筛及其MTO性能研究  

Synthesis of SAPO-34 molecular sieve induced by multi-templates and its application on MTO

作　　者：贾智姣 张婷婷[1] 刘志成 朱月香 朱洋洋 刘振[1] 刘欣梅[1] 阎子峰[1] Jia Zhijiao;Zhang Tingting;Liu Zhicheng;Zhu Yuexiang;Zhu Yangyang;Liu Zhen;Liu Xinmei;Yan Zifeng(CNPC Key Laboratory ofCatalysis,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,CNPC催化重点实验室,山东青岛266580

出　　处：《工业催化》2018年第5期50-55,共6页Industrial Catalysis

基　　金：国家自然科学基金(21476264)资助项目;山东省自然科学基金(ZR2017QB007)

摘　　要：利用传统水热合成方法,分别采用单一模板剂、混合模板剂合成纯相SAPO-34分子筛,采用XRD、BET、SEM、NH3-TPD和FTIR对样品进行表征,考察其在甲醇制烯烃反应中的催化性能。结果表明,混合模板剂诱导合成的SAPO-34分子筛具有较小的颗粒尺寸,较大的比表面积和适宜的酸性,可以在MTO反应中表现出更优的催化性能。结果发现,MOR&TEAOH混合模板剂合成的SAPO-34分子筛的催化寿命达320 min,双烯选择性超过82%。Pure SAPO-34 molecular sieve was synthesized with single or mixed templates under hydrothermal conditions and characterized by XRD,BET,SEM,NH 3-TPD and FTIR.The catalysts were tested in methanol to olefin(MTO)reactions.The results indicated that SAPO-34 synthesized by multi-templates had smaller crystal size,larger specific surface areas and appropriate acidity and better catalytic performance in MTO reaction.SAPO-34 prepared from multi-templates of MOR&TEAOH showed longer catalyst life of around 320 min and higher ethylene and propylene selectivity of 82%.

关 键 词：催化剂工程 甲醇制烯烃 SAPO-34分子筛 复合模板剂 水热合成 

分 类 号：TQ426.6[化学工程] TQ424.25