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Metals 2016, 6(7), 154; doi:10.3390/met6070154

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

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1
Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
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Guangxi Collaborative Innovation Center of Structure and Property for New Energy Materials, Guilin 541004, China
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Authors to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 8 May 2016 / Revised: 21 June 2016 / Accepted: 27 June 2016 / Published: 8 July 2016
View Full-Text   |   Download PDF [3413 KB, uploaded 8 July 2016]   |  

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. View Full-Text
Keywords: hydrogen generation; ammonia borane; polypyrrole nanofiber; Co-Ni-B; hydrolysis hydrogen generation; ammonia borane; polypyrrole nanofiber; Co-Ni-B; hydrolysis
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MDPI and ACS Style

Zou, Y.; Gao, Y.; Xiang, C.; Chu, H.; Qiu, S.; Yan, E.; Xu, F.; Tang, C.; Sun, L. Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane. Metals 2016, 6, 154.

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