醇水体积比对Cu-HMS介孔分子筛结构及PdCl_2/Cu-HMS催化性能的影响  

Effect of Ethanol/water Volume Ratio on Pore Structure for Cu-HMS Mesoporous Molecular Sieve and Catalytic Performance for PdCl_2/Cu-HMS

作　　者：张萍波[1] 周燕[1] 范明明[1] 蒋平平[1] 

机构地区：[1]江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《精细化工》2013年第7期734-738,共5页Fine Chemicals

基　　金：国家自然科学基金(21106054);教育部博士点新教师基金项目(20100093120003);中央高校基本科研业务费专项资金(JUSRP211A07)~~

摘　　要：通过改变EtOH/H2O体积比,制备了5个不同粒径和比表面积的Cu-HMS分子筛。采用红外、XRD、SEM和BET进行表征,研究不同乙醇/水体积比对Cu-HMS结构和表面形貌的影响。不同粒径的Cu-HMS与活性组分PdCl2结合制成氧化羰基合成碳酸二乙酯(DEC)的催化剂,选择性均达到100%。EtOH/H2O体积比为1.0的Cu-HMS分子筛的比表面积可达1 520.36 m2/g,DEC的时空收率达到110.3 g/(L·h)。Five copper-containing hexagonal mesoporous molecular sieves（Cu-HMS） with different particle sizes and specific surface areas were synthesized by adjusting ethanol/water volume ratio of the synthetic system.The effects of ethanol/water volume ratio on the structure and surface morphology were characterized by means of infrared resonance（IR） spectroscopy,X-ray powder diffraction（XRD）,scanning electron microscopy（SEM） and N2 adsorption-desorption.The selectivity of all the PdCl2/Cu-HMS catalysts reached 100% by oxidative carbonylation of ethanol in the gas-phase reaction.When ethanol/water volume ratio was about 1.0,the specific surface areas of Cu-HMS reached 1 520.36 m^2/g,and space time yield of DEC was 110.3 g/（L·h）.

关 键 词：ETOH H2O体积比 Cu-HMS结构 碳酸二乙酯 氧化羰基 催化技术 

分 类 号：TQ426.61[化学工程]