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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
