Covalent synthesis of dense zeolite LTA membranes on various 3-chloropropyltrimethoxysilane functionalized supports

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Aisheng Huang
  • Qian Liu
  • Nanyi Wang
  • Xin Tong
  • Bingxin Huang
  • Meng Wang
  • Jürgen Caro

Organisationseinheiten

Externe Organisationen

  • Chinese Academy of Sciences (CAS)
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Details

OriginalspracheEnglisch
Seiten (von - bis)57-64
Seitenumfang8
FachzeitschriftJournal of membrane science
Jahrgang437
Frühes Online-Datum6 März 2013
PublikationsstatusVeröffentlicht - 15 Juni 2013

Abstract

A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.

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Covalent synthesis of dense zeolite LTA membranes on various 3-chloropropyltrimethoxysilane functionalized supports. / Huang, Aisheng; Liu, Qian; Wang, Nanyi et al.
in: Journal of membrane science, Jahrgang 437, 15.06.2013, S. 57-64.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Huang A, Liu Q, Wang N, Tong X, Huang B, Wang M et al. Covalent synthesis of dense zeolite LTA membranes on various 3-chloropropyltrimethoxysilane functionalized supports. Journal of membrane science. 2013 Jun 15;437:57-64. Epub 2013 Mär 6. doi: 10.1016/j.memsci.2013.02.058
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title = "Covalent synthesis of dense zeolite LTA membranes on various 3-chloropropyltrimethoxysilane functionalized supports",
abstract = "A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.",
keywords = "3-Chloropropyltrimethoxysilane, Covalent linker, Gas separation, Molecular sieve membrane, Zeolite LTA membrane",
author = "Aisheng Huang and Qian Liu and Nanyi Wang and Xin Tong and Bingxin Huang and Meng Wang and J{\"u}rgen Caro",
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T1 - Covalent synthesis of dense zeolite LTA membranes on various 3-chloropropyltrimethoxysilane functionalized supports

AU - Huang, Aisheng

AU - Liu, Qian

AU - Wang, Nanyi

AU - Tong, Xin

AU - Huang, Bingxin

AU - Wang, Meng

AU - Caro, Jürgen

PY - 2013/6/15

Y1 - 2013/6/15

N2 - A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.

AB - A seeding-free synthesis strategy was developed for the preparation of dense and phase-pure zeolite LTA membranes on 3-chloropropyltrimethoxysilane (CPTMS) functionalized supports. Through the functionalization of supports by using CPTMS, the nucleation and growth of a thin, well intergrown zeolite LTA membrane could be promoted on various porous supports such as Al2O3 disks and tubes, and TiO2 disks, as well as on dense supports such as stainless steel, PTFE, and glass disks. The SEM and XRD characterizations indicate that a relative thin but dense and phase-pure zeolite LTA membrane with a thickness of about 3.0μm can be formed on the porous Al2O3 and TiO2 disks by crystallization at 60°C for 24h, and no cracks, pinholes or other defects were observed in the membrane layer. The zeolite LTA membranes prepared on CPTMS-functionalized Al2O3 disks were evaluated in single gas permeation and mixed gas separation. It is found that the zeolite LTA membranes prepared on CPTMS-modified Al2O3 disks show molecular sieving in gas separation. For binary mixtures at 20°C and 1bar, the mixed gas separation factors of H2/CO2, H2/N2, H2/CH4, H2/C3H8 and H2/C3H6, are found to be 7.4, 6.8, 5.2, 15.3 and 36.8, which are higher than the corresponding Knudsen coefficients.

KW - 3-Chloropropyltrimethoxysilane

KW - Covalent linker

KW - Gas separation

KW - Molecular sieve membrane

KW - Zeolite LTA membrane

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DO - 10.1016/j.memsci.2013.02.058

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JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

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