摘要
利用水热法合成了ＭＣＭ－４８介孔分子筛，通过ＩＲ，ＴＧ－ＤＴＡ，ＸＲＤ，ＴＥＭ，Ｎ２吸附等方法对产物进行了表征，并系统地研究了晶化温度、晶化时间。
Mesoporous molecular sieve MCM 48 was prepared hydrothermally with CTAB, NaOH, TEOS as source materials. Characterization results obtained from the determination of XRD, TEM, N 2 adsorption, IR spectra and TG DTA show that the products possess similar structure properties as those reported in literatures. Various synthesis parameters, including crystallization time, crystallization temperature and starting gel composition, have been studied. It was found that the crystallization temperature of 373 K was preferable, lower temperature leading to weak crystallinity, higher temperature leading to amorphous material. Crystallization time of 3 d was found suitable for MCM 48 formation, shorter time resulting in a low crystallinity. The influence of composition features such as n (H 2O)/ n (SiO 2) and n (CTAB)/ n (SiO 2) on the product was studied.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期675-679,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
教育部博士点基金
吉林大学无机合成与材料制备化学开放实验室资助
关键词
MCM-48
介孔分子筛
水热合成
分子筛
Mesoporous molecular sieve MCM 48, Hydrothermal synthesis, Characterization
