摘要
以TEAOH(四乙基氢氧化铵)为模板剂,采用预涂晶种的二次水热合成法在平均孔径3～5μm的多孔α-Al2O3管状载体的外表面制备了连续致密的β沸石膜,并且用SEM,XRD和气体渗透对所合成的膜进行了表征,结果表明,所合成的膜连续致密,与载体管结合良好,没有大的缺陷。
The beta zeolite membranes were prepared on seeded α-Al2O3 substrate tubes with a mean pore size of 3-5 μm by the method of secondary .hydrothermal growth using TEAOH as templates. The prepared membranes were characterized with XRD, SEM and nitrogen permeance. XRD patterns show that the prepared membranes possess typical beta zeolite structure. SEM images indicated that a continuous and dense zeolite membrane with around 10 μm in thickness is formed on the seeded supports. Nitrogen permeation experiments proved that the permeation governed by surface diffusion. Thus the prepared membranes have no large defects.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2007年第2期226-229,共4页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金资助项目(No.20176004)
关键词
β沸石膜
管状载体
晶种法
beta zeolite membrane
tubular supports
seeded method
