Preparation and characterization of novel carbon molecular sieve membrane/PSSF composite by pyrolysis method for toluene adsorption
作者机构:School of Chemistry and Chemical EngineeringGuangdong Provincial Key Laboratory of Green Chemical Product TechnologySouth China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Analytical ScienceThe University of ManchesterManchesterM139PLUK
出 版 物:《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿(英文版))
年 卷 期:2019年第13卷第4期
页 面:772-783页
核心收录:
学科分类:0817[工学-化学工程与技术] 08[工学]
基 金:The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China(Grant No.21776106) Pearl River S&T Nova Program of Guangzhou(Grant No.201610010171)for this work
主 题:carbon molecular sieve membrane stainless steel fibers pyrolysis structured fixed bed toluene
摘 要:Carbon molecular sieve membrane(CMSM)/paper-like stainless steel fibers(PSSF)has been manufactured by pyrolyzing poly(fiirfuryl alcohol)(PFA)coated on the metal *** was synthesized using oxalic acid dihydrate as a catalyst and coated on microfibers by dip coating *** the purpose of investigating the effects of final carbonization temperature,the composites were carbonized between 400℃ and 800℃ under flowing *** morphology and microstructure were examined by X-ray diffraction,Fourier transforms infrared spectroscopy,scanning electron microscopy,thermogravimetric analysis,N2 adsorption and desorption,Raman spectra and X-ray photoelectron *** consequences of characterization showed that the CMSM containing mesopores o f 3.9 nm were *** specific surface area of the CMSM/PSSF fabricated in different pyrolysis temperature varies from 26.5 to 169.1 m^2·g^-1 and pore volume varies from 0.06 to 0.23 cm^3·g^-*** pyrolysis temperature exceeds 600℃,the specific surface,pore diameter and pore volume decreased as carbonization temperature ***,the degree of graphitization in carbon matrix increased with rising pyrolysis *** adsorption experiments on different structured fixed bed that was padded by CMSM/PSSF and granular activated carbon(GAC)were *** the sake of comparison,adsorption test was also performed on fixed bed packed with *** experimental results indicated that the rate constant κ′ was dramatically increased as the proportion of CMCM/PSSF composites increased on the basis of Yoon-Nelson model,which suggested that structured fixed bed padded with CMSM/PSSF composite offered higher adsorption rate and mass transfer efficiency.