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Advances in Energy Research
  Volume 1, Number 1, March 2013, pages 1-12
open access

Supported nickel catalysts for the decomposition of hydrazine borane N2H4BH3
Cetin Cakany, Umit B. Demirci, Qiang Xu and Philippe Miele

    In this work, we present the catalytic dehydrogenation of hydrazine borane N2H4BH3 (HB) using supported nickel catalysts at 50 C. In the presence of monometallic nickel catalysts, the dehydrogenation of HB is a one-step reaction consisting of the hydrolysis of the BH3 group only. The challenge is to activate nickel to make it reactive towards the N2H4 moiety of HB. A set of 52 catalysts were prepared by using 2 supports (Al2O3 and TiO2), 5 nickel precursors and 3 preparation methods. For the first time, we show that the supported nickel catalysts are able to dehydrogenate the NH3 moiety of HB. In our experimental conditions, the best results were obtained with 20 wt% Ni-Al2O3 and 20 wt% Ni-TiO2, with ca. 190 mL H2 + N2 generated over a total theoretical volume of 283 mL, suggesting H2 selectivity of 37 and 32%, respectively. Both catalysts were then characterized by EDX, XPS, and XRD. Our achievement is the first step forward and opens new perspectives for developing catalysts for the total dehydrogenation of HB.
Key Words
    chemical hydrogen storage; hydrazine borane; hydrolysis; supported nickel catalysts
Cetin Cakany, Umit B. Demirci and Philippe Miele : IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM2), Universite Montpellier 2, Place
E. Bataillon, F- 34095, Montpellier, France;
Qiang Xu : National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka, 563-8577, Japan

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