无机材料学报2012，Vol.27Issue(10)：1105-1111,7.DOI:10.3724/SP.J.1077.2012.11739
预涂晶种诱导法在α-Al2O3陶瓷管载体上合成ZIF-8膜
Seeded Secondary Growth Synthesis of ZIF-8 Membranes Supported on α-Al2O3 Ceramic Tubes
摘要
Abstract
A seeded growth procedure was used to successfully prepare continuous and well inter-grown zeolitic imi-dazolate framework-8 (ZIF-8) membranes on porous α-alumina tubes. The effects of some parameters including the content of seeds and PEI in seeding solution, the concentration of sodium formate in synthesis solution and synthesis temperature on the formation of ZIF-8 membrancs were invcstigated in detail. The characterization of SEM, XRD and single gas permeation showed that PEI added in the seeding solution can improve the adhesion between the seed crystals and the support surface. Moreover, sodium formate used in synthesis solution could prevent the seed layer from peeling off during the membrane growing process. The as-synthesized ZIF-8 membrane is well inter-grown and continuous. Single gas permeation shows that the separation factors of H2/CO2 and H2/CH4 are 5.4 and 2.56, respectively, indicating that Knudsen diffusion plays a controlling role in the gas permeation through the ZIF-8 membrane.关键词
金属有机骨架材料/MOFs膜/ZIF-8膜/气体分离Key words
metal-organic frameworks/ MOFs membrane/ ZIF-8 membrane/ gas separation分类
化学化工引用本文复制引用
杜淑慧,刘亚光,孔令寅,张健,刘海鸥,张雄福..预涂晶种诱导法在α-Al2O3陶瓷管载体上合成ZIF-8膜[J].无机材料学报,2012,27(10):1105-1111,7.基金项目
国家自然科学基金(21076030,21036006) （21076030,21036006）
辽宁省高等学校优秀人才支持计划项目(LR201008) （LR201008）
辽宁省自然科学基金(201202027) （201202027）
