Nanoscale Ni-B amorphous alloy catalyst supported on carbon nanotubes
(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)
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