Preferential Adsorption of Propylene over Propane on a Ag-Exchanged X-Type Zeolite Membrane

Motomu Sakai; Naoyuki Fujimaki; Yasuhito Sasaki; Noriyuki Yasuda; Masahiro Seshimo; Masahiko Matsukata

doi:10.1021/acsami.0c01461

Preferential Adsorption of Propylene over Propane on a Ag-Exchanged X-Type Zeolite Membrane

Motomu Sakai^*, Naoyuki Fujimaki, Yasuhito Sasaki, Noriyuki Yasuda, Masahiro Seshimo, Masahiko Matsukata

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

We investigated the adsorption properties of propylene and propane on an olefin-selective Ag-X membrane and discussed the contribution of adsorption selectivity to propylene/propane separation performance through this membrane. The isotherms of propylene and propane on Ag-X membranes were measured in unary systems at 313 K. The amount of propylene adsorbed on the Ag-X membrane at a lower pressure increased remarkably compared with that on the Na-X membrane. Such a change of adsorption property could induce excellent separation property for the Ag-X membrane. We compared the adsorption properties in a binary system calculated based on the Markham-Benton approach with the results of a permeation test. The molar fractions of propylene in the adsorbed phase in the binary system provided good agreement with propylene purity on the permeation side of the Ag-X membrane. These results clearly show that permeation selectivity of the Ag-X membrane for the propylene/propane mixture is mainly governed by adsorption selectivity.

Original language	English
Pages (from-to)	24086-24092
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	12
Issue number	21
DOIs	https://doi.org/10.1021/acsami.0c01461
Publication status	Published - 2020 May 27

Keywords

FAU zeolite membrane separation
adsorption
propylene propane

ASJC Scopus subject areas

Materials Science(all)

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10.1021/acsami.0c01461

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title = "Preferential Adsorption of Propylene over Propane on a Ag-Exchanged X-Type Zeolite Membrane",

abstract = "We investigated the adsorption properties of propylene and propane on an olefin-selective Ag-X membrane and discussed the contribution of adsorption selectivity to propylene/propane separation performance through this membrane. The isotherms of propylene and propane on Ag-X membranes were measured in unary systems at 313 K. The amount of propylene adsorbed on the Ag-X membrane at a lower pressure increased remarkably compared with that on the Na-X membrane. Such a change of adsorption property could induce excellent separation property for the Ag-X membrane. We compared the adsorption properties in a binary system calculated based on the Markham-Benton approach with the results of a permeation test. The molar fractions of propylene in the adsorbed phase in the binary system provided good agreement with propylene purity on the permeation side of the Ag-X membrane. These results clearly show that permeation selectivity of the Ag-X membrane for the propylene/propane mixture is mainly governed by adsorption selectivity.",

keywords = "FAU zeolite membrane separation, adsorption, propylene propane",

author = "Motomu Sakai and Naoyuki Fujimaki and Yasuhito Sasaki and Noriyuki Yasuda and Masahiro Seshimo and Masahiko Matsukata",

note = "Funding Information: This work was partially supported by JST CREST (Japan Science and Technology agency, Create Revolutionary Technological Seeds for Science and Technology innovation program), grant number JPMJCR1324, Japan. Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

year = "2020",

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doi = "10.1021/acsami.0c01461",

language = "English",

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AU - Sakai, Motomu

AU - Fujimaki, Naoyuki

AU - Sasaki, Yasuhito

AU - Yasuda, Noriyuki

AU - Seshimo, Masahiro

AU - Matsukata, Masahiko

N1 - Funding Information: This work was partially supported by JST CREST (Japan Science and Technology agency, Create Revolutionary Technological Seeds for Science and Technology innovation program), grant number JPMJCR1324, Japan. Publisher Copyright: © 2020 American Chemical Society.

PY - 2020/5/27

Y1 - 2020/5/27

N2 - We investigated the adsorption properties of propylene and propane on an olefin-selective Ag-X membrane and discussed the contribution of adsorption selectivity to propylene/propane separation performance through this membrane. The isotherms of propylene and propane on Ag-X membranes were measured in unary systems at 313 K. The amount of propylene adsorbed on the Ag-X membrane at a lower pressure increased remarkably compared with that on the Na-X membrane. Such a change of adsorption property could induce excellent separation property for the Ag-X membrane. We compared the adsorption properties in a binary system calculated based on the Markham-Benton approach with the results of a permeation test. The molar fractions of propylene in the adsorbed phase in the binary system provided good agreement with propylene purity on the permeation side of the Ag-X membrane. These results clearly show that permeation selectivity of the Ag-X membrane for the propylene/propane mixture is mainly governed by adsorption selectivity.

AB - We investigated the adsorption properties of propylene and propane on an olefin-selective Ag-X membrane and discussed the contribution of adsorption selectivity to propylene/propane separation performance through this membrane. The isotherms of propylene and propane on Ag-X membranes were measured in unary systems at 313 K. The amount of propylene adsorbed on the Ag-X membrane at a lower pressure increased remarkably compared with that on the Na-X membrane. Such a change of adsorption property could induce excellent separation property for the Ag-X membrane. We compared the adsorption properties in a binary system calculated based on the Markham-Benton approach with the results of a permeation test. The molar fractions of propylene in the adsorbed phase in the binary system provided good agreement with propylene purity on the permeation side of the Ag-X membrane. These results clearly show that permeation selectivity of the Ag-X membrane for the propylene/propane mixture is mainly governed by adsorption selectivity.

KW - FAU zeolite membrane separation

KW - adsorption

KW - propylene propane

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Preferential Adsorption of Propylene over Propane on a Ag-Exchanged X-Type Zeolite Membrane

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