Hydrogen storage in ion-exchanged zeolites

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Hydrogen storage in ion-exchanged zeolites. / Langmi, Henrietta; Book, David; Walton, Allan; Johnson, Simon; Al-Mamouri, Malek; Speight, John; Edwards, PP; Harris, Ivor; Anderson, Paul.

In: Journal of Alloys and Compounds, Vol. 404-406, 08.12.2005, p. 637 - 642.

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@article{92afb5996fc1452dbc3b7a602c960927,
title = "Hydrogen storage in ion-exchanged zeolites",
abstract = "The hydrogen storage properties of zeolites X, Y, A and Rho containing various exchangeable cations have been investigated. All hydrogen storage capacities were measured at a temperature of - 196 degrees C and a pressure range of 0-15 bar, using a constant pressure thermogravimetric analyser. The results show that, zeolites exhibit diverse behaviour with respect to hydrogen uptake, dependent on both the framework structure and the nature of the cations present. A major factor influencing uptake is the available void space: in zeolites A and Rho pore blocking by large extraframework cations is a major factor restricting hydrogen uptake, but in zeolites X and Y, blocking does not occur. This study also suggests that cations may act as binding sites for hydrogen molecules. For zeolites X and Y, hydrogen uptake relates closely to the measured BET surface area. The highest gravimetric storage capacity of 2.19 wt.% was obtained for CaX. Volumetric storage densities of up to 31.0 kg H-2/m(3) (143 H-2 molecules/unit cell) and 30.2 kg H-2/m(3) (144 H-2 molecules/unit cell) were achieved for CaX and KX, respectively. (c) 2005 Elsevier B.V. All rights reserved.",
keywords = "zeolites, hydrogen storage, hydrogen adsorption, ion exchange",
author = "Henrietta Langmi and David Book and Allan Walton and Simon Johnson and Malek Al-Mamouri and John Speight and PP Edwards and Ivor Harris and Paul Anderson",
year = "2005",
month = dec,
day = "8",
doi = "10.1016/j.jallcom.2004.12.193",
language = "English",
volume = "404-406",
pages = "637 -- 642",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Hydrogen storage in ion-exchanged zeolites

AU - Langmi, Henrietta

AU - Book, David

AU - Walton, Allan

AU - Johnson, Simon

AU - Al-Mamouri, Malek

AU - Speight, John

AU - Edwards, PP

AU - Harris, Ivor

AU - Anderson, Paul

PY - 2005/12/8

Y1 - 2005/12/8

N2 - The hydrogen storage properties of zeolites X, Y, A and Rho containing various exchangeable cations have been investigated. All hydrogen storage capacities were measured at a temperature of - 196 degrees C and a pressure range of 0-15 bar, using a constant pressure thermogravimetric analyser. The results show that, zeolites exhibit diverse behaviour with respect to hydrogen uptake, dependent on both the framework structure and the nature of the cations present. A major factor influencing uptake is the available void space: in zeolites A and Rho pore blocking by large extraframework cations is a major factor restricting hydrogen uptake, but in zeolites X and Y, blocking does not occur. This study also suggests that cations may act as binding sites for hydrogen molecules. For zeolites X and Y, hydrogen uptake relates closely to the measured BET surface area. The highest gravimetric storage capacity of 2.19 wt.% was obtained for CaX. Volumetric storage densities of up to 31.0 kg H-2/m(3) (143 H-2 molecules/unit cell) and 30.2 kg H-2/m(3) (144 H-2 molecules/unit cell) were achieved for CaX and KX, respectively. (c) 2005 Elsevier B.V. All rights reserved.

AB - The hydrogen storage properties of zeolites X, Y, A and Rho containing various exchangeable cations have been investigated. All hydrogen storage capacities were measured at a temperature of - 196 degrees C and a pressure range of 0-15 bar, using a constant pressure thermogravimetric analyser. The results show that, zeolites exhibit diverse behaviour with respect to hydrogen uptake, dependent on both the framework structure and the nature of the cations present. A major factor influencing uptake is the available void space: in zeolites A and Rho pore blocking by large extraframework cations is a major factor restricting hydrogen uptake, but in zeolites X and Y, blocking does not occur. This study also suggests that cations may act as binding sites for hydrogen molecules. For zeolites X and Y, hydrogen uptake relates closely to the measured BET surface area. The highest gravimetric storage capacity of 2.19 wt.% was obtained for CaX. Volumetric storage densities of up to 31.0 kg H-2/m(3) (143 H-2 molecules/unit cell) and 30.2 kg H-2/m(3) (144 H-2 molecules/unit cell) were achieved for CaX and KX, respectively. (c) 2005 Elsevier B.V. All rights reserved.

KW - zeolites

KW - hydrogen storage

KW - hydrogen adsorption

KW - ion exchange

UR - http://www.scopus.com/inward/record.url?scp=28044457447&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2004.12.193

DO - 10.1016/j.jallcom.2004.12.193

M3 - Article

VL - 404-406

SP - 637

EP - 642

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -