摘要
ＭＣＭ－４１是１９９２年由Ｍｏｂｉｌ公司首次合成，具有可调的规整孔道结构，孔径大小为１．６～１０ｎｍ的六方中孔分子筛［１，２］，β－沸石是具有三维十二元环孔道，一条线性通道孔径为０．５７ｎｍ×０．７５ｎｍ，另一条由两种线性通道相交形成的弯曲通道，孔径...
MCM\|41\|\|zeolite, a new type of molecular sieve with \%meso\%\|microporous composite structure was synthesized hydrothermally by using cetyltrimethylammonium bromide and tetraethylammonium hydroxide as the template. The structure and property of the molecular sieve were studied by means of XRD, SEM, DTG, FTIR and probe reaction teachniques. The results show that the composite molecular sieve contains stable hexagonal mesoporous structure and the microporous structure of \|zeolite. It appears in globular particles with loose surface and the results of DTG and FTIR exhibit that the \%meso\%\|microporous composite molecular sieve is different from the mechanical mixture of MCM\|41 and \|zeolites. Compared with the mechanical mixture of MCM\|41 and \|zeolites, MCM\|41\|\|zeolite has a much higher hydrocracking activity for n\|heptane.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第3期356-358,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学重点基金
关键词
MCM-41
沸石
复合分子筛
分子筛
催化剂
MCM\|41\|\|zeolite, Composite molecular sieve, Synthesis, Characterization
