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Merck

Hydrogen storage in double clathrates with tert-butylamine.

The journal of physical chemistry. A (2009-05-23)
Pinnelli S R Prasad, Takeshi Sugahara, Amadeu K Sum, E Dendy Sloan, Carolyn A Koh
ABSTRAKT

The first proof-of-concept of the formation of a double tert-butylamine (t-BuNH(2)) + hydrogen (H(2)) clathrate hydrate has been demonstrated. Binary clathrate hydrates with different molar concentrations of the large guest t-BuNH(2) (0.98-9.31 mol %) were synthesized at 13.8 MPa and 250 K, and characterized by powder X-ray diffraction and Raman microscopy. A structural transformation from sVI to sII of t-BuNH(2) hydrate was clearly observed under hydrogen pressures. Raman spectroscopic data suggested that the hydrogen molecules occupied the small cages and had similar occupancy to hydrogen in the double tetrahydrofuran (THF) + H(2) clathrate hydrate. The hydrogen storage capacity in this system was approximately 0.7 H(2) wt % at the molar concentration of t-BuNH(2) close to the sII stoichiometry.

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Sigma-Aldrich
tert-Butylamine, 98%
Sigma-Aldrich
tert-Butylamine hydrochloride, ≥98.0% (AT)
Sigma-Aldrich
tert-Butylamine, ≥99.5%