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Citation: Guo Xiang-Yun, Zhong Bing, Peng Shao-Yi. Determination of the Fractal Dimension of Particle Surface by Chemical Kinetic Method[J]. Acta Physico-Chimica Sinica, ;1997, 13(01): 52-55. doi: 10.3866/PKU.WHXB19970110 shu

Determination of the Fractal Dimension of Particle Surface by Chemical Kinetic Method

1.
Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001

Received Date: 2 May 1996
Available Online: 15 January 1997

A chemical kinetic method based on the kinetic expression of the second-order reaction on fractals is used to determine the spectral dimension of fractal surfaces. The method can conveniently give the spectral dimension by analyzing the relation between reactant concentration and reaction time (ct～t). The spectral dimension of the Diffusion-Limited Aggregate (DLA) is obtained by Monte Carlo simulation of the desorption process of chemisorbed hydrogen from DLA, and it is in agreement, with that in literature. Also, the spectral dimension of a real catalyst 12% Ni/Al2O3 is obtained by the method.
- Fractal surface,
- Spectral dimension,
- Chemical kinetic method,
- Hydrogen desorption,
- Monte Carlo simulation
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