XPS studies on a novel amorphous Ni-Co-W-B alloy powder
XPS studies on a novel amorphous Ni-Co-W-B alloy powder
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DOI：
10.1016/s0169-4332(97)00223-7
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发表时间：
1997-11-01
影响因子：
6.7
通讯作者：
Deng, JF
中科院分区：
文献类型：
--
作者：
Dai, WL;Qiao, MH;Deng, JF
采用化学还原法制备了一种新型非晶态Ni-Co-W-B合金粉末，该合金粉末对苯加氢反应具有比Ni-Co-B更高的催化活性。用XPS研究了表面组成和表面组分间的相互作用。测量检测到一些氧化物和氢氧化物的存在，例如NiO、Ni（OH）（2）、Co（OH）（2）、B2 O3和WO 3，其分别与它们的元素状态Ni、Co、B和W相关。少量钨原子的存在导致表面上更多的金属镍。(C)1997年Elsevier Science B.V.
A novel amorphous Ni-Co-W-B alloy powder, which showed higher catalytic activity than Ni-Co-B for the hydrogenation of benzene, was prepared by chemical reduction and characterized by TEM and XRD. The surface composition and the interactions between the components on the surface were studied by XPS. The measurement detected the presence of some oxides and hydroxides, such as NiO, Ni(OH)(2), Co(OH)(2), B2O3, and WO3 associated with their elemental states of Ni, Co, B and W, respectively. The presence of a few number of tungsten atoms leads to more metallic nickel on the surface. (C) 1997 Elsevier Science B.V.