relation: https://khub.utp.edu.my/scholars/5755/
title: CO2 and CH4 permeation through zeolitic imidazolate framework (ZIF)-8 membrane synthesized via in situ layer-by-layer growth: an experimental and modeling study
creator: Lai, L.S.
creator: Yeong, Y.F.
creator: Lau, K.K.
creator: Shariff, A.M.
description: In this work, a general model representing the permeation of CO2 and CH4 through Zeolitic Imidazole Framework-8 (ZIF-8) membrane synthesized via in situ layer-by-layer growth under microwave irradiation is developed. The model is formed based on the pressure drop concept in order to predict the intercrystalline properties of the ZIF-8 membrane according to the experimental permeation data of CO2 and CH4. The model combines Knudsen diffusion, viscous flow and generalized Maxwell-Stefan models, which considered the support resistance, gas diffusivity and intercrystalline pores of the membrane layer. The simulated data are fitted well with the experimental gas permeation results and consistent with the physical characterizations, including X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results showed that, layer-by-layer growth managed to reduce the intercrystalline pores present in the ZIF-8 membrane layer, with the approximate pore radius of 2.1 � 10-7 m and porosity of 1.15 � 10-4. However, the presence of the small pores can significantly affect the performance of the ZIF-8 membrane which resulted in CO2/CH4 ideal selectivity of �1. © The Royal Society of Chemistry.
publisher: Royal Society of Chemistry
date: 2015
type: Article
type: PeerReviewed
identifier:   Lai, L.S. and Yeong, Y.F. and Lau, K.K. and Shariff, A.M.  (2015) CO2 and CH4 permeation through zeolitic imidazolate framework (ZIF)-8 membrane synthesized via in situ layer-by-layer growth: an experimental and modeling study.  RSC Advances, 5 (96).  pp. 79098-79106.  ISSN 20462069     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942133478&doi=10.1039%2fc5ra12813g&partnerID=40&md5=edb1ae82104ae89487f0991aeb5a5dd7
relation: 10.1039/c5ra12813g
identifier: 10.1039/c5ra12813g