Hydrolytic cleavage of ammonia-borane complex for hydrogen production

    Authors

    N. Mohajeri; A. T-Raissi;O. Adebiyi

    Comments

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    Abbreviated Journal Title

    J. Power Sources

    Keywords

    ammonia-borane; hydrogen storage; chemical hydride; hydrolysis; catalyst; Electrochemistry; Energy & Fuels

    Abstract

    A new process for generating hydrogen via near room temperature hydrolysis of AB complex using small amounts of platinum group metal catalyst has been studied. Using in situ B-11 NMR spectroscopy, the overall rate of K2Cl6Pt catalyzed hydrolysis of AB complex was calculated to be third-order. The pre-exponential factor (A) and the activation energy (E-a) of Arrhenius equation, In k = In A - E(a)lRT, were determined to be: A = 1.6 x 10(11) L mol(-1) s(-1) and E-a = 86.6 kJ mol(-1) for temperature range of (25-35 degrees C). X-ray photoelectron spectroscopy of the residue suggested that the platinum salt was reduced from Pt4+ to P-t0 within the course of the reaction and X-ray diffraction analysis pattern for the residue showed crystallized single-phase boric acid. (C) 2007 Published by Elsevier B.V.

    Journal Title

    Journal of Power Sources

    Volume

    167

    Issue/Number

    2

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    482

    Last Page

    485

    WOS Identifier

    WOS:000246542800033

    ISSN

    0378-7753

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