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High-capacity hydrogen and nitric oxide adsorption and storage in a metal-organic framework

Lookup NU author(s): Bo Xiao, Pam Wheatley, Dr Xuebo Zhao, Dr Ashleigh Fletcher, Sue Fox, Emeritus Professor Mark Thomas

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Abstract

Gas adsorption experiments have been carried out on a copper benzene tricarboxylate metal-organic framework material, HKUST-1. Hydrogen adsorption at 1 and 10 bar (both 77 K) gives an adsorption capacity of 11.16 mmol H 2 per g of HKUST-1 (22.7 mg g-1, 2.27 wt %) at 1 bar and 18 mmol per g (36.28 mg g-1, 3.6 wt %) at 10 bar. Adsorption of D2 at 1 bar (77 K) is between 1.09 (at 1 bar) and 1.20(at <100 mbar) times the H2 values depending on the pressure, agreeing with the theoretical expectations. Gravimetric adsorption measurements of NO on HKUST-1 at 196 K (1 bar) gives a large adsorption capacity of ∼9 mmol g -1, which is significantly greater than any other adsorption capacity reported on a porous solid. At 298 K the adsorption capacity at 1 bar is just over 3 mmol g-1. Infra red experiments show that the NO binds to the empty copper metal sites in HKUST-1. Chemiluminescence and platelet aggregometry experiments indicate that the amount of NO recovered on exposure of the resulting complex to water is enough to be biologically active, completely inhibiting platelet aggregation in platelet rich plasma. © 2007 American Chemical Society.


Publication metadata

Author(s): Xiao B, Wheatley PS, Zhao X, Fletcher AJ, Fox S, Rossi AG, Megson IL, Bordiga S, Regli L, Thomas KM, Morris RE

Publication type: Article

Publication status: Published

Journal: Journal of the American Chemical Society

Year: 2007

Volume: 129

Issue: 5

Pages: 1203-1209

ISSN (print): 0002-7863

ISSN (electronic): 1520-5126

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/ja066098k

DOI: 10.1021/ja066098k

PubMed id: 17263402


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