文献类型：期刊文献

英文题名：Asymmetric and hierarchical porous carbon membranes prepared by a single-step soft-templated method

作者：Ma, Jing[1];Qin, Guotong[1];Wei, Wei[2];Jiang, Lei[3];Diniz da Costa, Joao C.[4]

第一作者：Ma, Jing

通讯作者：Qin, GT[1]

机构：[1]Beihang Univ, Sch Space & Environm, 9 Shahe Gaojiaoyuan South 3rd St, Beijing 102206, Peoples R China;[2]Beijing Union Univ, Coll Biochem Engn, Beijing, Peoples R China;[3]Beihang Univ, Sch Chem, Beijing, Peoples R China;[4]Univ Queensland, Sch Chem Engn, FIM2 Lab, Brisbane, Qld, Australia

第一机构：Beihang Univ, Sch Space & Environm, 9 Shahe Gaojiaoyuan South 3rd St, Beijing 102206, Peoples R China

通讯机构：[1]corresponding author), Beihang Univ, Sch Space & Environm, 9 Shahe Gaojiaoyuan South 3rd St, Beijing 102206, Peoples R China.

年份：2021

卷号：208

期号：2

起止页码：166-170

外文期刊名：CHEMICAL ENGINEERING COMMUNICATIONS

收录：;EI(收录号：20195007803687);Scopus(收录号：2-s2.0-85075942528);WOS:【SCI-EXPANDED(收录号:WOS:000500146700001)】；

基金：The authors are thankful for the financial support given by the National Science Foundation of China (Project 51772031, 51678019). J. C. Diniz da Costa acknowledges support via the Australian Research Council Future Fellowship (FT).

语种：英文

外文关键词：Carbon membrane; coating; integrated interlayer and top layer; one-pot method; organic sol-gel preparation

摘要：A facile single-step method was developed to prepare carbon membranes derived from novalac phenol-formaldehyde resin as a carbon precursor and Pluronic (R) F108 (EO132-PO50-EO132) and polyethylene glycol as the soft template. In a single sintering-step, an asymmetric membrane was formed with a very thin top layer followed mesoporous interlayer supported on a macroporous support. The top separating layer was characterized by closely packed carbon particles while the interlayer is consisted of disordered and loosely packed carbon particles, containing large gaps thus leading to hierarchical structures. The carbon membrane achieved H-2/N-2 permselectivity up to 92, far above the Knudsen selectivity suggesting the molecular sieving mechanism.