蒸汽相中c轴取向连续完美单层B-Al-ZS-M5沸石膜的原位制备  

In-situ Preparation of Continuous and Perfect Single-layer B-Al-ZSM-5 Zeolite Membranes with c-axis Orientation in a Vapor Phase

作　　者：董维阳[1] 任瑜[1] 周伟正[1] 龙英才[1] 

机构地区：[1]复旦大学化学系分子催化与创新材料实验室,上海200433

出　　处：《化学学报》2003年第10期1521-1523,共3页Acta Chimica Sinica

基　　金：国家自然科学基金 (No .2 92 36 1 2 0 0 3)资助项目

摘　　要：Continuous and perfect single-layer B-Al-ZSM-5 zeolite membranes with c-axis orientation, self-transformation from B-containing porous gla ss disks w ith rough and uneven surfaces full of pits, have been in-situ prepared on the su bstrates surfaces in a mixed vapor of ethylenediamine, tri-n-propylamine a nd H 2O . The thickness of the membranes is ca. 60 μm. Under the conditions of 20 ℃ and 0.1 MPa pressure difference, the permeabilities of H 2, O 2 and N 2 thro ugh the calcined B-Al-ZSM-5 zeolite membranes are 2 298×10 -8 , 1 176 ×10 -8 and 1 368×10 -9 mol/(m 2·s·Pa), respectively. The calculated values of ideal se lectivities of H 2 an d O 2 over N 2 are 16 8 and 8 60, respectively. The data indicate that the c alcin ed zeolite membranes are non-pinhole, non-crack, continuous and perfect.Continuous and perfect single-layer B-Al-ZSM-5 zeolite membranes with c-axis orientation, self-transformation from B-containing porous gla ss disks w ith rough and uneven surfaces full of pits, have been in-situ prepared on the su bstrates surfaces in a mixed vapor of ethylenediamine, tri-n-propylamine a nd H 2O . The thickness of the membranes is ca. 60 μm. Under the conditions of 20 ℃ and 0.1 MPa pressure difference, the permeabilities of H 2, O 2 and N 2 thro ugh the calcined B-Al-ZSM-5 zeolite membranes are 2 298×10 -8 , 1 176 ×10 -8 and 1 368×10 -9 mol/(m 2·s·Pa), respectively. The calculated values of ideal se lectivities of H 2 an d O 2 over N 2 are 16 8 and 8 60, respectively. The data indicate that the c alcin ed zeolite membranes are non-pinhole, non-crack, continuous and perfect.

关 键 词：蒸汽相 C轴取向 连续完美单层 B-Al-ZSM-5沸石膜 原位制备 

分 类 号：O643.3[理学—物理化学]