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- Title
Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane.
- Authors
Yongjin Zou; Yubo Gao; Cuili Xiang; Hailiang Chu; Shujun Qiu; Erhu Yan; Fen Xu; Chengying Tang; Lixian Sun
- 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 min1. 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. 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. mol1. Even after ten recycling experiments, the catalyst showed good stability owing to the synergistic effect of Co-Ni-B and PAC.
- Subjects
COBALT alloys; POLYPYRROLE; ACTIVATED carbon; HYDROLYSIS; AMMONIA compounds; NANOFIBERS
- Publication
Metals (2075-4701), 2016, Vol 6, Issue 7, p154
- ISSN
2075-4701
- Publication type
Article
- DOI
10.3390/met6070154