Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation

Motomu Sakai; Yasuhito Sasaki; Taisuke Tomono; Masahiro Seshimo; Masahiko Matsukata

doi:10.1021/acsami.8b20151

Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation

Motomu Sakai, Yasuhito Sasaki, Taisuke Tomono, Masahiro Seshimo, Masahiko Matsukata

Research output: Contribution to journal › Article

8 Citations (Scopus)

Abstract

Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO₃ aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10^-8 mol m^-2 s^-1 Pa^-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10^-8 mol m^-2 s^-1 Pa^-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.

Original language	English
Pages (from-to)	4145-4151
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	11
Issue number	4
DOIs	https://doi.org/10.1021/acsami.8b20151
Publication status	Published - 2019 Jan 30

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Keywords

ethylene
FAU
gas separation
membrane
propylene
zeolite

ASJC Scopus subject areas

Materials Science(all)

Cite this

Sakai, M., Sasaki, Y., Tomono, T., Seshimo, M., & Matsukata, M. (2019). Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation. ACS Applied Materials and Interfaces, 11(4), 4145-4151. https://doi.org/10.1021/acsami.8b20151

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title = "Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation",

abstract = "Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.",

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author = "Motomu Sakai and Yasuhito Sasaki and Taisuke Tomono and Masahiro Seshimo and Masahiko Matsukata",

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AU - Sakai, Motomu

AU - Sasaki, Yasuhito

AU - Tomono, Taisuke

AU - Seshimo, Masahiro

AU - Matsukata, Masahiko

PY - 2019/1/30

Y1 - 2019/1/30

N2 - Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.

AB - Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.

KW - ethylene

KW - FAU

KW - gas separation

KW - membrane

KW - propylene

KW - zeolite

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Access to Document

10.1021/acsami.8b20151