Low-pressure molecular hydrogen storage in semi-clathrate hydrates of quaternary ammonium compounds

Antonin Chapoy; Ross Anderson; Bahman Tohidi

doi:10.1021/ja066883x

Low-pressure molecular hydrogen storage in semi-clathrate hydrates of quaternary ammonium compounds

Antonin Chapoy, Ross Anderson, Bahman Tohidi

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

204 Citations (Scopus)

Abstract

Phase relations for tetra-n-butylammonium bromide (TBAB, (C₄H₉)₄N⁺Br^-) and tetra-n-butylammonium fluoride (TBAF, (C₄H₉)₄N⁺F^-) aqueous systems under hydrogen pressure reveal the formation of binary H₂-TBAB and H₂-TBAF semi-clathrate hydrates which are stable at ambient temperatures (=29 °C) and atmospheric pressure. H₂ is most likely accommodated by occupation of normally vacant dodecahedral (5¹²) cavities, with preliminary analyses suggesting gas contents are an order of magnitude greater than that for binary H₂-THF clathrates at the same pressure (1 MPa). Copyright © 2007 American Chemical Society.

Original language	English
Pages (from-to)	746-747
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	129
Issue number	4
DOIs	https://doi.org/10.1021/ja066883x
Publication status	Published - 31 Jan 2007

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title = "Low-pressure molecular hydrogen storage in semi-clathrate hydrates of quaternary ammonium compounds",

abstract = "Phase relations for tetra-n-butylammonium bromide (TBAB, (C4H9)4N+Br-) and tetra-n-butylammonium fluoride (TBAF, (C4H9)4N+F-) aqueous systems under hydrogen pressure reveal the formation of binary H2-TBAB and H2-TBAF semi-clathrate hydrates which are stable at ambient temperatures (=29 °C) and atmospheric pressure. H2 is most likely accommodated by occupation of normally vacant dodecahedral (512) cavities, with preliminary analyses suggesting gas contents are an order of magnitude greater than that for binary H2-THF clathrates at the same pressure (1 MPa). Copyright {\textcopyright} 2007 American Chemical Society.",

author = "Antonin Chapoy and Ross Anderson and Bahman Tohidi",

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AB - Phase relations for tetra-n-butylammonium bromide (TBAB, (C4H9)4N+Br-) and tetra-n-butylammonium fluoride (TBAF, (C4H9)4N+F-) aqueous systems under hydrogen pressure reveal the formation of binary H2-TBAB and H2-TBAF semi-clathrate hydrates which are stable at ambient temperatures (=29 °C) and atmospheric pressure. H2 is most likely accommodated by occupation of normally vacant dodecahedral (512) cavities, with preliminary analyses suggesting gas contents are an order of magnitude greater than that for binary H2-THF clathrates at the same pressure (1 MPa). Copyright © 2007 American Chemical Society.

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Low-pressure molecular hydrogen storage in semi-clathrate hydrates of quaternary ammonium compounds

Abstract

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