Hydrogen release from hydrolysis of borazane on Pt- and Ni-based alloy catalysts

Chen, Yao; Zhuang, Lin; Cao, Yuliang; Ai, Xinping; Yang, Hanxi

doi:10.1016/j.ijhydene.2008.02.028

Cited by 160 publications

(46 citation statements)

References 44 publications

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“…of hydrogen). It has been observed with many catalysts, for example, palladium black [27], platinum-and nickel-based alloys [40], and gold-, nickel-, and copper-based catalysts [12,41,42], that less than a stoichiometric amount of hydrogen is generated, arising from the incomplete hydrolysis of AB. High stability and easy recyclability are key requirements for practical catalysts.…”

Section: Resultsmentioning

confidence: 99%

One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane

et al. 2011

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Magnetically recyclable Au/Co/Fe core-shell nanoparticles (NPs) have been successfully synthesized via a one-step in situ procedure. Transmission electron microscope (TEM), energy dispersive X-ray spectroscopic (EDS), and electron energy-loss spectroscopic (EELS) measurements revealed that the trimetallic Au/Co/Fe NPs have a triple-layered core-shell structure composed of a Au core, a Co-rich inter-layer, and a Fe-rich shell. The Au/Co/Fe core-shell NPs exhibit much higher catalytic activities for hydrolytic dehydrogenation of ammonia borane (NH 3 BH 3 , AB) than the monometallic (Au, Co, Fe) or bimetallic (AuCo, AuFe, CoFe) counterparts.

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Section: Resultsmentioning

confidence: 99%

One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane

et al. 2011

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“…The Co-Ni-B/PAC catalyst powder yielded the highest HG rate of 1451.2 mL•min −1 •g −1 , which is about twice that obtained with the Co-Ni-B catalyst powder (720.8 mL•min −1 •g −1 ). In addition, the HG rate was higher than for other known catalysts, such as Pd nanoparticles supported on MIL-101 (1008 mL•min −1 •g −1 ) [31] and Pt3Ni (1388 mL•min −1 •g −1 ) [32]. These results suggest that the synergistic interaction between Co-Ni-B and PAC may have contributed significantly to the hydrolysis of AB.…”

Section: Effect Of Different Types Of Catalysts On Hydrogen Generationmentioning

confidence: 76%

Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane

Zou

Gao

Xiang

et al. 2016

Metals

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Abstract:In this study, polypyrrole (PPy) nanofibers were used to synthesize a super-activated carbon material. A highly-dispersed Co-Ni-B catalyst was supported on PPy nanofiber-derived activated carbon (PAC) by chemical reduction. The Co-Ni-B/PAC hybrid catalyst exhibited excellent catalytic performance for the decomposition of ammonia borane (AB) in an aqueous alkaline solution at room temperature. The size of the metal particles, morphology of Co-Ni-B/PAC, and catalytic activity of the supported catalyst were investigated. Ni-B, Co-B, and Co-Ni-B catalysts were also synthesized in the absence of PAC under similar conditions for comparison. The maximum hydrogen generation rate (1451.2 mL´1¨min´1¨g´1 at 25˝C) was obtained with Co-Ni-B/PAC. Kinetic studies indicated that the hydrolysis reaction of AB was first order with respect to Co-Ni-B/PAC, and the activation energy was 30.2 kJ¨mol´1. Even after ten recycling experiments, the catalyst showed good stability owing to the synergistic effect of Co-Ni-B and PAC.

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“…Various catalysts with excellent catalytic performance have been developed [52][53][54][55][56][57][58][59][60][61][62][63]. These include noble metal based catalysts such as Pt, Ru, Rh, Pd, Pt and Au supported on alumina; combinations of Pt with Ir, Ru, Co, Cu, Sn, Au and Ni supported on carbon, Rh(0) nano-clusters [52][53][54][55][56][57]; and also non-noble metal based catalysts such as Ni and Co on alumina, and Ni and Co nano-particles, Cu/Cu2O, Poly(N-vinyl-2-pyrrolidone) (PVP) stabilized Ni, NiSiO2 and Fe-Ni alloys [58][59][60][61][62][63]. Unfortunately, most of the aforementioned catalysts, except for the magnetic Fe-Ni alloy catalyst, are difficult to use repeatedly in solution because they are in a powdery form or are supported weakly on a substrate.…”

Section: Hydrogen Production From Ammonia Boranementioning

confidence: 99%

Ammonia as a Hydrogen Source for Fuel Cells: A Review

Cheddie¹

2012

Hydrogen Energy - Challenges and Perspectives

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Hydrogen release from hydrolysis of borazane on Pt- and Ni-based alloy catalysts

Cited by 160 publications

References 44 publications

One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane

One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane

Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane

Ammonia as a Hydrogen Source for Fuel Cells: A Review

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