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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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Nanoscale Ni-B amorphous alloy catalyst supported on carbon nanotubes
HU Chang-yuan(胡长员)1, 2, DUAN Wu-mao(段武茂)3, NING Yun-long(宁云龙)1,
WU Zhen-fei(伍振飞)1, LI Feng-yi(李凤仪)2

1. Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University,
 Nanchang 330013, China;
2. School of Science, Nanchang University, Nanchang 330047, China;
3. Institute of Technology, Jiangxi Agriculture University, Nanchang 330045, China

Abstract:Heat treatment of carbon nanotubes (CNTs) was carried out under ammonia atmosphere and then CNTs were modified by Triton x-100 (CNTs-T). Ni-B amorphous alloy catalysts supported on CNTs and CNTs-T were prepared by impregnation-chemical reduction method. The catalysts were characterized by TEM, ICP, XRD, BET and CO chemisorption, and studied in the acetylene selective hydrogenation. The results show that homogeneous Ni-B amorphous particles with mean size about 10 nm are successfully prepared on CNTs-T. Compared with Ni-B/CNTs, nickel loading of Ni-B/CNTs-T is increased by about 14.6%. Furthermore, the activity and selectivity of Ni-B/CNTs-T are much higher than those of Ni-B/CNTs in the acetylene selective hydrogenation under comparative condition.

 

Key words: carbon nanotubes; nanoscale Ni-B amorphous alloy; catalytic materials; Triton x-100

ISSN 1672-7029
CN 43-1423/U

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