摘要
以白炭黑和正硅酸乙酯为硅源，十二、十六烷基三甲基铵为模板剂，用水热法和室温直接法合成出中孔分子筛ＭＣＭ－４１，考察了对合成的影响因素，用红外光谱、吸附、孔分布、热分析等手段对这两种产物进行了表征。结果表明：这种分子筛可以在很宽的配比范围内获得，但较高水硅比更有利于合成；在水硅比较低的体系中得到了一种类ＭＣＭ－４１中孔相（亦应属于ＭＣＭ－４１），其ＸＲＤ衍射峰较宽，２θ角度偏低，具有类似于无定形硅铝酸盐的骨架结构。
Mesoporous molecular sieve MCM-41 and a mesoporous MCM-41-like solid were synthesized with organic surfactant CnH2n+1(CH3) 3NX(n= 12 ,16) as the templates by hydrothermal synthesis or direct synthesis at room temperature.The synthesis conditions and crystallization were investigated. Some hydrothermally synthesized products are proved to be amorphous by XRD determination,while after calcination they turned to mesoporous materials with high crystallinity.The structure and property of the two phases were studied by means of XRD,IR, TG and adsorption techniquesThe results show that the two materials have the same physical and chemical qualities, The inorganic portion of them resembles amorphous silicates or aluminosilicates rather than crystalline molecular sieves.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第9期1334-1338,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
吉林大学无机水热合成开放研究实验室资助
关键词
分子筛
MCM-41
水热合成
表征
Mesoporous molecular sieves,MCM-41, Hydrotliermal synthesis,Characterization
