SBA-15模板法有序多孔炭膜材料的制备及表征  

Preparation and characterization of ordered porous carbon membrane materials by SBA-15 template method

作　　者：张兵[1] 周佳玲[1] 王丹[1] 吴永红[1] 李琳[2] 王同华[2] 

机构地区：[1]沈阳工业大学石油化工学院,辽宁辽阳111003 [2]大连理工大学化工学院,辽宁大连116024

出　　处：《功能材料》2016年第5期18-21,29,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20906063);辽宁省自然科学基金资助项目(20102170);辽宁省高等学校杰出青年学者成长计划资助项目(LJQ2012010)

摘　　要：以介孔分子筛SBA-15为模板剂,聚酰亚胺为前驱体,经共混、成膜、炭化及脱模板过程,制备了有序多孔炭膜材料(OPCM)。通过热失重、红外光谱、电子显微镜和X-射线衍射,分别对前驱体热稳定性、膜表面官能团、微观形貌与微观结构进行了表征。考察了SBA-15脱除前后的炭膜微观结构与形貌,及OPCM气体分离性能。结果显示,当炭化温度为650℃、SBA-15用量为1%时,所制得OPCM的气体分离系数显著高于努森扩散。Ordered porous carbon membrane materials （OPCM） were prepared by using mesoporous moleculesieves SBA-15 as template and polyimide as precursor via a combined process involving the blending, mem-brane-forming, pyrolysis and template removal steps. The thermal stability of precursor, functional groups onmembrane surface, structural morphology and microstructure were respectively characterized by the techniquesof thermogravimetric analysis, infrared spectroscopy, electron microscopy and X-ray diffraction. The micro-structure and morphology of membranes before and after SBA-15 removal, as well as the gas separation per-formance of OPCM, were investigated. Results have shown that the gas separation factors significantly exceedthe Knudsen diffusion, when the OPCM was fabricated under the condition of pyrolysis temperature of 650 ℃and the content of SBA-15 of 1%.

关 键 词：硬模板剂 炭膜 孔结构 气体分离 

分 类 号：TB32[一般工业技术—材料科学与工程]