Stability of Ta/YSZ cermet membrane for hydrogen separation

Jung Hoon Park; Sung Il Jeon; Woo Jong Sim; Il Hyun Baek; Soo Hyun Choi

doi:10.1016/j.egypro.2011.01.116

Stability of Ta/YSZ cermet membrane for hydrogen separation

Jung Hoon Park, Sung Il Jeon, Woo Jong Sim, Il Hyun Baek, Soo Hyun Choi

Department of Chemical and Biochemical Engineering

Greenhouse Gas Research Center

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

14 Scopus citations

Abstract

A dense cermet membrane consisting of tantalum metal and yttria-stabilized zirconia has been developed for separation of hydrogen from hydrogen containing gas mixtures. Ta/YSZ membrane without secondary phase can be obtained by mechanical polishing after high vacuum sintering. As-prepared membrane showed dense structure with continuous channel of tantalum. Hydrogen permeation experiments were conducted using different cell to investigate the optimum sealing method. Hydrogen fluxes through these cermet membranes were measured in the region of 350-500°C. The permeation flux increased monotonically with increasing the temperature. The highest hydrogen flux was 1.2 ml/min·cm² for a cermet membrane of 0.5 mm thick at 300°C using 100% H₂ as the feed gas and Ar as the sweep gas. Ta/YSZ membrane was deteriorated by tantalum hydride formed during permeation with brazing sealing but in the case of knife edge type sealing, no tantalum hydride was detected on the surface of Ta/YSZ cermet membrane.

Original language	English
Pages (from-to)	756-762
Number of pages	7
Journal	Energy Procedia
Volume	4
DOIs	https://doi.org/10.1016/j.egypro.2011.01.116
State	Published - 2011

Keywords

Cermet
Composite membrane
Hydrogen separation
Sealing
Stability

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10.1016/j.egypro.2011.01.116

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title = "Stability of Ta/YSZ cermet membrane for hydrogen separation",

abstract = "A dense cermet membrane consisting of tantalum metal and yttria-stabilized zirconia has been developed for separation of hydrogen from hydrogen containing gas mixtures. Ta/YSZ membrane without secondary phase can be obtained by mechanical polishing after high vacuum sintering. As-prepared membrane showed dense structure with continuous channel of tantalum. Hydrogen permeation experiments were conducted using different cell to investigate the optimum sealing method. Hydrogen fluxes through these cermet membranes were measured in the region of 350-500°C. The permeation flux increased monotonically with increasing the temperature. The highest hydrogen flux was 1.2 ml/min·cm2 for a cermet membrane of 0.5 mm thick at 300°C using 100% H2 as the feed gas and Ar as the sweep gas. Ta/YSZ membrane was deteriorated by tantalum hydride formed during permeation with brazing sealing but in the case of knife edge type sealing, no tantalum hydride was detected on the surface of Ta/YSZ cermet membrane.",

keywords = "Cermet, Composite membrane, Hydrogen separation, Sealing, Stability",

author = "Park, {Jung Hoon} and Jeon, {Sung Il} and Sim, {Woo Jong} and Baek, {Il Hyun} and Choi, {Soo Hyun}",

year = "2011",

doi = "10.1016/j.egypro.2011.01.116",

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TY - JOUR

T1 - Stability of Ta/YSZ cermet membrane for hydrogen separation

AU - Park, Jung Hoon

AU - Jeon, Sung Il

AU - Sim, Woo Jong

AU - Baek, Il Hyun

AU - Choi, Soo Hyun

PY - 2011

Y1 - 2011

N2 - A dense cermet membrane consisting of tantalum metal and yttria-stabilized zirconia has been developed for separation of hydrogen from hydrogen containing gas mixtures. Ta/YSZ membrane without secondary phase can be obtained by mechanical polishing after high vacuum sintering. As-prepared membrane showed dense structure with continuous channel of tantalum. Hydrogen permeation experiments were conducted using different cell to investigate the optimum sealing method. Hydrogen fluxes through these cermet membranes were measured in the region of 350-500°C. The permeation flux increased monotonically with increasing the temperature. The highest hydrogen flux was 1.2 ml/min·cm2 for a cermet membrane of 0.5 mm thick at 300°C using 100% H2 as the feed gas and Ar as the sweep gas. Ta/YSZ membrane was deteriorated by tantalum hydride formed during permeation with brazing sealing but in the case of knife edge type sealing, no tantalum hydride was detected on the surface of Ta/YSZ cermet membrane.

AB - A dense cermet membrane consisting of tantalum metal and yttria-stabilized zirconia has been developed for separation of hydrogen from hydrogen containing gas mixtures. Ta/YSZ membrane without secondary phase can be obtained by mechanical polishing after high vacuum sintering. As-prepared membrane showed dense structure with continuous channel of tantalum. Hydrogen permeation experiments were conducted using different cell to investigate the optimum sealing method. Hydrogen fluxes through these cermet membranes were measured in the region of 350-500°C. The permeation flux increased monotonically with increasing the temperature. The highest hydrogen flux was 1.2 ml/min·cm2 for a cermet membrane of 0.5 mm thick at 300°C using 100% H2 as the feed gas and Ar as the sweep gas. Ta/YSZ membrane was deteriorated by tantalum hydride formed during permeation with brazing sealing but in the case of knife edge type sealing, no tantalum hydride was detected on the surface of Ta/YSZ cermet membrane.

KW - Cermet

KW - Composite membrane

KW - Hydrogen separation

KW - Sealing

KW - Stability

UR - http://www.scopus.com/inward/record.url?scp=79955414202&partnerID=8YFLogxK

U2 - 10.1016/j.egypro.2011.01.116

DO - 10.1016/j.egypro.2011.01.116

M3 - Article

AN - SCOPUS:79955414202

SN - 1876-6102

VL - 4

SP - 756

EP - 762

JO - Energy Procedia

JF - Energy Procedia

ER -

Stability of Ta/YSZ cermet membrane for hydrogen separation

Abstract

Keywords

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