Infiltration of precursors into a porous alumina support for ZIF-8 membrane synthesis

被引:46
作者
Li, Lunxi [1 ]
Yao, Jianfeng [1 ]
Chen, Rizhi [1 ]
He, Li [1 ]
Wang, Kun [1 ]
Wang, Huanting [1 ]
机构
[1] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia
基金
澳大利亚研究理事会;
关键词
Zeolitic imidazole framework-8; Precursor infiltration; Membrane; Solvothermal synthesis; METAL-ORGANIC FRAMEWORK; MOLECULAR-SIEVE MEMBRANE; SEPARATION; FILMS; SELECTIVITY; MIXTURES;
D O I
10.1016/j.micromeso.2012.09.029
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A new synthesis method was developed to synthesize ZIF-8 membrane by infiltrating precursors into a porous alumina support as a seed-and-nutrient layer, and subsequent solvothermal synthesis. A precursor layer with a thickness of about 10 mu m was formed inside the porous alumina support and the ZIF-8 membrane grew from both the seeds embedded in the precursor layer and the synthesis solution under solvothermal synthesis conditions. The effects of the solvothermal synthesis temperature and time were investigated, and a continuous and stable ZIF-8 membrane was prepared at 120 degrees C for 8 h. Gas permeation tests indicated the membrane synthesized at 120 degrees C for 8 h was continuous and compact, and had H-2\N-2 ideal selectivity of 5.7 with a H-2 permeance of 1.7 x 10(-7) mol m(-2) s(-1) pa(-1). (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码:15 / 18
页数:4
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