挤条成型TS-1分子筛催化剂制备及性能表征  

Synthesis and Characterization of Extruded Titanium Silicate-1 and its Catalysis Performance in Cyclohexanone Ammoximation

作　　者：刘国清[1] 匡继刚[1] 吴剑[1] 罗和安[1] 

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《化学反应工程与工艺》2010年第1期42-46,共5页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金和中国石油化工股份有限公司联合资助重点项目(20736009);2009年湖南省科技计划重点项目(2009GK2003);2009年湖南省研究生科研创新项目(CX2009B134)

摘　　要：制备了TS-1分子筛挤条成型催化剂。并采用傅里叶红外光谱(FT-IR),X射线衍射(XRD),N_2吸附,激光粒度分析等手段对其进行了表征,考察了TS-1原粉含量,烧成温度,保温时间,焙烧气氛等工艺条件对成型催化剂的机械强度和催化性能的影响。结果表明,同TS-1原粉相比,TS-1分子筛挤条成型催化剂的骨架保留了MFI的拓扑结构,但其比表面积及孔容均有所降低;挤条成型TS-1分子筛适宜的制备条件为烧成温度800℃,保温时间4 h,焙烧气氛O_2,TS-1原粉含量80%,此条件下制得的成型催化剂压碎强度为22.3 N/mm,催化环己酮氨肟化反应环己酮肟收率可达99.1%。Formed Titanium Silicate-1 （TS-1） catalyst was prepared by extrusion using TS-1 powder as raw material and characterized by fourier infrared （FT-IR）, X ray disffraction （XRD）, low temperature nitrogen adsorption and particle size distribution. The effects of calcination temperature, calcination atmosphere, calcination time and the content of TS-1 powder on the properties of formed catalyst were investigated. The results showed that the MFI framework structure was kept in the formed TS-1 catalyst with declining surface area and pore volume after extrusion. With a content of 80% TS-1 powder and calcined at 800 ℃ for 4 h in the atmosphere of O2, the formed catalyst can reach a crush strength of 22.3 N/mm and used in cyclohexanone ammoximation with oxime yield of 99.1 %.

关 键 词：钛硅分子筛 挤条成型 焙烧 氨肟化 

分 类 号：O643.36[理学—物理化学]