Control of sequential mto reactions through an MFI-type zeolite membrane contactor

Shusei Tanizume; Toshihiro Yoshimura; Katsunori Ishii; Mikihiro Nomura

doi:10.3390/membranes10020026

Control of sequential mto reactions through an MFI-type zeolite membrane contactor

Shusei Tanizume, Toshihiro Yoshimura, Katsunori Ishii, Mikihiro Nomura

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

6 Citations (Scopus)

Abstract

A membrane for controlling methanol-to-olefin (MTO) reactions was developed, which featured an MFI-type zeolite membrane (Si/Al = 25) that was synthesized on a porous α-alumina substrate using a secondary growth method. Here, the H2/SF6 permeance ratios were between 150 and 450. The methanol conversion rate was 70% with 38% ethylene selectivity and 28% propylene selectivity as determined using a cross-flow membrane contactor. In order to improve the olefin selectivity of the membrane, the MFI zeolite layer (Si/Al = ∞) was coated on an MFI-type zeolite membrane (Si/Al = 25). Using this two-layered membrane system, the olefin selectivity value increased to 85%; this was 19% higher than the value obtained during the single-layer membrane system.

Original language	English
Article number	26
Journal	Membranes
Volume	10
Issue number	2
DOIs	https://doi.org/10.3390/membranes10020026
Publication status	Published - 2020 Feb

Keywords

Catalyst regeneration
MFI-type zeolite
MTO reaction
Membrane contactor
Silicalite-1 coating
Zeolite membrane

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Process Chemistry and Technology
Filtration and Separation

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10.3390/membranes10020026

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title = "Control of sequential mto reactions through an MFI-type zeolite membrane contactor",

abstract = "A membrane for controlling methanol-to-olefin (MTO) reactions was developed, which featured an MFI-type zeolite membrane (Si/Al = 25) that was synthesized on a porous α-alumina substrate using a secondary growth method. Here, the H2/SF6 permeance ratios were between 150 and 450. The methanol conversion rate was 70% with 38% ethylene selectivity and 28% propylene selectivity as determined using a cross-flow membrane contactor. In order to improve the olefin selectivity of the membrane, the MFI zeolite layer (Si/Al = ∞) was coated on an MFI-type zeolite membrane (Si/Al = 25). Using this two-layered membrane system, the olefin selectivity value increased to 85%; this was 19% higher than the value obtained during the single-layer membrane system.",

keywords = "Catalyst regeneration, MFI-type zeolite, MTO reaction, Membrane contactor, Silicalite-1 coating, Zeolite membrane",

author = "Shusei Tanizume and Toshihiro Yoshimura and Katsunori Ishii and Mikihiro Nomura",

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T1 - Control of sequential mto reactions through an MFI-type zeolite membrane contactor

AU - Tanizume, Shusei

AU - Yoshimura, Toshihiro

AU - Ishii, Katsunori

AU - Nomura, Mikihiro

PY - 2020/2

Y1 - 2020/2

N2 - A membrane for controlling methanol-to-olefin (MTO) reactions was developed, which featured an MFI-type zeolite membrane (Si/Al = 25) that was synthesized on a porous α-alumina substrate using a secondary growth method. Here, the H2/SF6 permeance ratios were between 150 and 450. The methanol conversion rate was 70% with 38% ethylene selectivity and 28% propylene selectivity as determined using a cross-flow membrane contactor. In order to improve the olefin selectivity of the membrane, the MFI zeolite layer (Si/Al = ∞) was coated on an MFI-type zeolite membrane (Si/Al = 25). Using this two-layered membrane system, the olefin selectivity value increased to 85%; this was 19% higher than the value obtained during the single-layer membrane system.

AB - A membrane for controlling methanol-to-olefin (MTO) reactions was developed, which featured an MFI-type zeolite membrane (Si/Al = 25) that was synthesized on a porous α-alumina substrate using a secondary growth method. Here, the H2/SF6 permeance ratios were between 150 and 450. The methanol conversion rate was 70% with 38% ethylene selectivity and 28% propylene selectivity as determined using a cross-flow membrane contactor. In order to improve the olefin selectivity of the membrane, the MFI zeolite layer (Si/Al = ∞) was coated on an MFI-type zeolite membrane (Si/Al = 25). Using this two-layered membrane system, the olefin selectivity value increased to 85%; this was 19% higher than the value obtained during the single-layer membrane system.

KW - Catalyst regeneration

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KW - MTO reaction

KW - Membrane contactor

KW - Silicalite-1 coating

KW - Zeolite membrane

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Control of sequential mto reactions through an MFI-type zeolite membrane contactor

Abstract

Keywords

ASJC Scopus subject areas

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