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 impre...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.展开更多
基金Project (20263003) supported by the National Natural Science Foundation of China
文摘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.
