具有强酸位的六方和立方介孔硅铝分子筛合成及催化活性比较  

Synthesis and Catalytic Performances of Mesoporous Aluminosilicates of Cubic and Hexagonal Structure with Stronger Acid Sites

作　　者：李工[1] 阚秋斌[1] 吴通好[1] 侯长民[1] 黄家辉[1] 吴淑杰[1] 李灿[2] 

机构地区：[1]吉林大学化学学院,长春130023 [2]中国科学院大连化学物理研究所催化基础国家重点实验室,大连116023

出　　处：《高等学校化学学报》2002年第6期1171-1173,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 9973 0 0 1)资助

摘　　要：Mesoporous aluminosilicates with cubic and hexagonal structure have been synthesized by structure units of β zeolite in a two step crystallization process and characterized by XRD, IR, N 2 physical adsorption and desorption, 27 Al MAS NMR and NH 3 TPD techniques. The results show that MB48(25) and MB41(25) were similar to MCM 48 and MCM 41 on the long range structure respectively and MB48 with a cubic structure can be synthesized under the condition of a lower n (CTMAB)/ n (SiO 2) ratio. HMB48(25) and HMB41(25) exhibit a stronger acidic strength than conventional HMCM 41. The catalytic activity of HMB48(25) was the highest for cumene cracking and alkylation of 2,4 tert butylphenol with tert butylalcohol.Mesoporous aluminosilicates with cubic and hexagonal structure have been synthesized by structure units of β zeolite in a two step crystallization process and characterized by XRD, IR, N 2 physical adsorption and desorption, 27 Al MAS NMR and NH 3 TPD techniques. The results show that MB48(25) and MB41(25) were similar to MCM 48 and MCM 41 on the long range structure respectively and MB48 with a cubic structure can be synthesized under the condition of a lower n (CTMAB)/ n (SiO 2) ratio. HMB48(25) and HMB41(25) exhibit a stronger acidic strength than conventional HMCM 41. The catalytic activity of HMB48(25) was the highest for cumene cracking and alkylation of 2,4 tert butylphenol with tert butylalcohol.

关 键 词：分子筛 合成 催化活性 介孔材料 六方介孔结构 酸性 立方介孔结构 催化剂 

分 类 号：TQ426.6[化学工程] O643.361[理学—物理化学]