高透量A型分子筛膜的合成.pdf

第 22 卷第 2 期催化学报 2001 年 3 月
VoI. 22 No. 2 Chinese JournaI of CataIysis March 2001
Article ID:0253-983(7 2001)02-0099-02
Synthesis of Zeolite A-Type Membrane with High Permeation
CHEN Xiaobo,YANG Weishen,LIU Jie,LIN Liwu
( State Key LabOratOry Of Catalysis,Dalian Institute Of Chemical Physics,
The Chinese Academy Of Sciences,Dalian 116023,China)
Key words:zeoIite A,membrane,permeation
CLC number:0643 Document code:A
anic materiaIs have been essfuIIy uti- rubbed with zeoIite A crystaIs as seed,the sub-
Iized in a number of high-temperature and chemicaI- strates were pIaced verticaIIy in TefIon vesseIs con-
Iy corrosive separations due to their high thermaI taining 120 mI of geI. Then the vesseIs were put in
and chemicaI stabiIity . Since the pore size of zeoIites a microwave oven,heated up to 90 C within 1
is of moIecuIar dimensions,zeoIites have the poten- minute,then kept for varied time by tuning the mi-
tiaI to continuousIy separate mixtures of moIecuIes crowave power. After varied periods of reaction,
by moIecuIar sieving if they can be prepared as con- the substrates were removed and washed by deion-
tinuous membranes. Up to now,a number of pubIi- ized water to pH = 7 .0 . Then the membranes were
cations have reported the synthesis of various zeoIite dried at 150 C for 3 h.
membranes and their permeation properties. How- The X-ray diffraction( XRD)p