Abstract: The nano-scale SAPO-34 zeolites are synthesized by hydrothermal method using tetraethyl ammonium hydroxide (TEAOH) as structure directing agent.The surface of carrier is modified by γ-(methacryloyloxy) propyl trimethoxysilane (KH-570) and then high performance SAPO-34 zeolites membranes are prepared on the modified carrier through secondary growth method.The prepared SAPO-34 zeolite and SAPO-34 zeolite membrane are characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The results show that the prepared SAPO-34 membranes are continuous and compact,and of high crystallinity.The gas separation test is carried out for SAPO-34 zeolite membrane in order to evaluate its performance.At 298 K and a trans-membrane pressure of 0.1 MPa,the separation selective factor of SAPO-34 membranes against H2/CO2 increases from 1.45 to 6.20,and CO2 permeability is also as high as 1.76×10-7 mol/(m2·s·Pa).
李浩阳, 万梦秋, 孙国锋, 刘生鹏. 载体改性制备SAPO-34分子筛膜及其H2/CO2分离性能的研究[J]. 现代化工, 2017, 37(9): 119-122.
LI Hao-yang, WAN Meng-qiu, SUN Guo-feng, LIU Sheng-peng. SAPO-34 membrane synthesized on modified carrier and its separation performance for H2/CO2. Modern Chemical Industry, 2017, 37(9): 119-122.
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