完美骨架全硅β沸石性质研究 Ⅱ.有机吸附质的吸/脱附行为及其吸附热的测定  

Studies on Properties of Pure-silica β Zeolite Ⅱ. Adsorption/Desorption Behavior and Isosteric Heat of Organic Adsorbates

作　　者：宋茂莹[1] 王喜庆[1] 钱斌[1] 曾宇[1] 龙英才[1] 

机构地区：[1]复旦大学化学系,上海200433

出　　处：《化学学报》2002年第3期451-456,共6页Acta Chimica Sinica

基　　金：国家自然科学基金(No .2 0 0 730 10 );教育部博士点基金资助项目

摘　　要：运用热分析技术研究胺类、烷烃类、芳香烃类、醇类在具完美骨架的合成得到的全硅 β沸石中的脱附行为 ,测定亲和性指数AT 值和负载量 .发现烷烃类、胺类、芳香族化合物都对全硅β沸石骨架表现出亲和性 ,而醇类由于羟基的存在表现出对骨架的憎性 ,结合吸附热等数据讨论了各类吸附质与骨架相互作用 (主 /客体相互作用 )的性质 .The adsorption/desorption behaviors of 17 organic compounds on synthetic pure silica BEA type zeolite were investigated by means of TG/DTG/DTA analysis. The organics used as the adsorbates were alkanes, aromatics, alcohols, and alkylamines. A T value, the affinity index determined by DTG was used to characterize the interaction between the organic adsorbates and the perfect framework of the zeolite. The hydrophobic framework of the zeolite shows stronger affinity to the organic molecules containing amino and alkyl groups than those with hydroxyl groups. The nature of the sorbate/framework can be identified from the A T values, isosteric heat and interaction energy.

关 键 词：全硅β沸石 热分析技术 AT值 主客体相互作用 等量吸附热 相互作用能 催化剂 吸附剂 

分 类 号：O647.3[理学—物理化学]