γ-A1_2O_3改性对AlCl_3/γ-Al_2O_3催化剂性能的影响（英文）  

Study on the Performance of AlCl_3/γ-Al_2O_3 Catalyst with Modified γ-Al_2O_3

作　　者：蔡艳[1] 詹续芹 许胜[1] 米普科[1] 王斯晗[2] 徐显明[2] 

机构地区：[1]华东理工大学材料科学与工程学院,上海市先进聚合物材料重点实验室,超细材料制备与应用教育部重点实验室,上海200237 [2]中国石油天然气股份有限公司石油化工研究院大庆化工研究中心,黑龙江大庆163714

出　　处：《分子催化》2015年第2期111-117,共7页Journal of Molecular Catalysis(China)

基　　金：supported by the National Natural Science Foundation of China(No.U1162111)

摘　　要：采用HCl和NaOH改性γ-A12O3载体制备AlCl3/γ-A12O3固载催化剂,用吡啶-FTIR和吡啶-TPD技术分析了催化剂的表面酸性(酸中心类型、酸强度和酸量),并以1-癸烯齐聚作为探针反应,研究了催化剂的稳定性以及催化剂对聚合反应的影响.结果表明,催化剂含有两种酸类型,即Lewis酸和Brnsted酸,与未改性的催化剂相比,氢氧化钠改性载体制备的催化剂,酸量增大了47%,催化剂催化1-癸烯的齐聚反应活性增加了11.4%;而经盐酸改性制备的催化剂酸量增大112%,催化剂的活性增加了33.6%.酸强度依AlC l3/γ-A12O3,AlC l3/γ-Al2O3(NaO H),AlC l3/γ-Al2O3(HCl)的顺序增强.γ-Al2O3 was modified with HCl and NaOH then used as supported material for preparation the catalyst AlCl3/ γ-Al2O3. The supported catalyst surface properties( acid center type,acid strength and acid amount)were characterized by pyridine-FTIR and pyridine-TPD. In addition,the catalytic ability of supported catalyst and its stability were evaluated by the polymerization of 1-decene. The results indicated that there were two types of acid centers on the immobilized catalyst,which were Lewis and Brnsted acid sites. Compared with AlC l3/ γ-Al2O3,the acid amount of NaO H modified catalyst increased 47% and the activity for 1-decene polymerization augmented 11. 4%. However,as for the HCl modified catalyst,the increased value were 112% and 33. 6% respectively. The acidity grew as the following order: AlC l3/ γ-Al2O3< AlC l3/ γ-Al2O3(NaO H) < AlC l3/ γ-Al2O3(HCl).

关 键 词：改性 固载 Γ-氧化铝 三氯化铝 酸性位 

分 类 号：O643.36[理学—物理化学]