The influences of silane coupling agents on the structure and properties of SAPO-34 molecular sieve membrane were studied by modifying the surface of porous Al carrier with two silane coupling agents,3-aminopropyltriethoxysilane (KH-550) and γ-propyltrimethoxysilane (KH-570).SEM images and XRD analysis showed that a dense and pure SAPO-34 zeolite membrane without cracks,pinholes or other defects was formed on the modified porous Al support.The gas permeation results showed that the mixed gas (H2/CO2) separation selectivity of SAPO-34 zeolite membrane after support modification reached 14.57,which was 1.87 times higher than that without support modification.
Liu Shengpeng, Xiao Zhichao, Li Haoyang, Sun Guofeng, Xiong Yun
. Preparation and property of SAPO-34 zeolite membrane on the surface of modified Al[J]. New Chemical Materials, 2020
, 48(7)
: 129
-133
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.030
[1] Cacho-Bailo F,Matito-Martos I,Perez-Carbajo J,et al.On the molecular mechanisms for the H2/CO2 separation performance of zeolite imidazolate framework two-layered membranes[J].Chemical Science,2016,8(1):325-333.
[2] 张辉,贾宏葛,马立群,等.乙基纤维素与离子液体共混膜制备及气体分离性能研究[J].化工新型材料,2019,47(1):105-107.
[3] Ping E W,Zhou R,Funke H H,et al.Seeded-gel synthesis of SAPO-34 single channel and monolith membranes for CO2/CH4 separations[J].Journal of Membrane Science,2012,415:770-775.
[4] Das J K,Das N,Bandyopadhyay S.Highly selective SAPO-34 membrane on surface modified clay-alumina tubular support for H2/CO2 separation[J].International Journal of Hydrogen Energy,2012,37(13):10354-10364.
[5] 李良清,李佳佳,张进建,等.渗透汽化异丙醇脱水ZSM-5沸石膜的制备与表征[J].现代化工,2018,38(9):136-141.
[6] 张红娟,郑红娟,孙正谦.表面处理剂对滑石粉改性聚乳酸的影响[J].化工新型材料,2019,47(2):207-210.
[7] Kresge C T,Leonowicz M E,Roth W J,et al.Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism[J].Nature,1992,359(6397):710.
[8] Lok B M,Messina C A,Patton R L,et al.Silicoaluminophosphate molecular sieves:another new class of microporous crystalline inorganic solids[J].Journal of the American Chemical Society,1984,106(20):6092-6093.
[9] Galeano Y M,Cornaglia L,Tarditi A M.NaA zeolite membranes synthesized on top of APTES-modified porous stainless steel substrates[J].Journal of Membrane Science,2016,512:93-103.
[10] Poshusta J C,Tuan V A,Falconer J L,et al.Synthesis and permeation properties of SAPO-34 tubular membranes[J].Industrial & Engineering Chemistry Research,1998,37(10):3924-3929.
[11] Poshusta J C,Tuan V A,Pape E A,et al.Separation of light gas mixtures using SAPO-34 membranes[J].AIChE Journal,2000,46(4):779-789.
