Login In
Citation:
Fan Yi-Ning, Hu Zheng, Xu Zhao-Yi, Chen Yi. Studies on the Surface Properties of Ultrafine Amorphous Ni-B Alloy Particles[J]. Acta Physico-Chimica Sinica,
;1993, 9(03): 302-304.
doi:
10.3866/PKU.WHXB19930305
-
The effect of thermal treatment on the surface properties of ultrafine amorphous NiB alloy particles has been studied by H_2 chemisorption, X-ray photoelectron spectroscopy and surface area measurments. It is found that when heating temperature is lower than 623 K the amount of H_2 chemisorbed on NiB alloy catalyst increases with increasing temperature due to the aggregation of oxidized boron species existed in the surface layers of NiB alloy particles. However, thermal treatment at temperature higher than 623K results in a remarkable decrease in the H_2 uptake. This is correlated with not only the sintering of NiB alloy particles but also the migration of boron species alloying with nickel atoms from bulk to surface caused by complete crystallization of amorphous NiB alloy catalyst.
-
Keywords:
- Amorphous alloy; Ultrafine particles
-
-
-
-
[1]
Jin Tong , Shuyan Yu . Crystal Engineering for Supramolecular Chirality. University Chemistry, 2024, 39(3): 86-93. doi: 10.3866/PKU.DXHX202308113
-
[2]
Wenxiu Yang , Jinfeng Zhang , Quanlong Xu , Yun Yang , Lijie Zhang . Bimetallic AuCu Alloy Decorated Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Production. Acta Physico-Chimica Sinica, 2024, 40(10): 2312014-. doi: 10.3866/PKU.WHXB202312014
-
[3]
Xi Xu , Chaokai Zhu , Leiqing Cao , Zhuozhao Wu , Cao Guan . Experiential Education and 3D-Printed Alloys: Innovative Exploration and Student Development. University Chemistry, 2024, 39(2): 347-357. doi: 10.3866/PKU.DXHX202308039
-
[4]
Xiyuan Su , Zhenlin Hu , Ye Fan , Xianyuan Liu , Xianyong Lu . Change as You Want: Multi-Responsive Superhydrophobic Intelligent Actuation Material. University Chemistry, 2024, 39(5): 228-237. doi: 10.3866/PKU.DXHX202311059
-
[5]
Jia Yao , Xiaogang Peng . Theory of Macroscopic Molecular Systems: Theoretical Framework of the Physical Chemistry Course in the Chemistry “101 Plan”. University Chemistry, 2024, 39(10): 27-37. doi: 10.12461/PKU.DXHX202408117
-
[6]
Cunming Yu , Dongliang Tian , Jing Chen , Qinglin Yang , Kesong Liu , Lei Jiang . Chemistry “101 Program” Synthetic Chemistry Experiment Course Construction: Synthesis and Properties of Bioinspired Superhydrophobic Functional Materials. University Chemistry, 2024, 39(10): 101-106. doi: 10.12461/PKU.DXHX202408008
-
[7]
Chunai Dai , Yongsheng Han , Luting Yan , Zhen Li , Yingze Cao . Preparation of Superhydrophobic Surfaces and Their Application in Oily Wastewater Treatment: Design of a Comprehensive Physical Chemistry Innovation Experiment. University Chemistry, 2024, 39(2): 34-40. doi: 10.3866/PKU.DXHX202307081
-
[8]
Rui Li , Jiayu Zhang , Anyang Li . Two Levels of Understanding of Chemical Bonds: a Case of the Bonding Model of Hypervalent Molecules. University Chemistry, 2024, 39(2): 392-398. doi: 10.3866/PKU.DXHX202308051
-
[9]
Jiaxi Xu , Yuan Ma . Influence of Hyperconjugation on the Stability and Stable Conformation of Ethane, Hydrazine, and Hydrogen Peroxide. University Chemistry, 2024, 39(11): 374-377. doi: 10.3866/PKU.DXHX202402049
-
[1]
Metrics
- PDF Downloads(2387)
- Abstract views(2749)
- HTML views(7)
DownLoad: