Texture of Coke Depositing on γ-Al2O3 Biporous Granules under Kinetic and Diffusion Regimes Full article
Journal |
Journal of Porous Materials
ISSN: 1380-2224 , E-ISSN: 1573-4854 |
||
---|---|---|---|
Output data | Year: 1996, Volume: 3, Number: 1, Pages: 23-32 Pages count : 10 DOI: 10.1007/BF01135358 | ||
Tags | Coked catalyst, Distribution of modifier, Porous materials, Supported catalyst | ||
Authors |
|
||
Affiliations |
|
Abstract:
Morphology and local distribution of coke is studied in γ-Al2O3 biporous granules coked with mixture of propane and butane under kinetic and diffusion regimes. Under kinetic regime atT < 923 K, coke is shown to distribute as a viscous-plastic phase that wets the catalyst surface. At low coke content, coke is localized at the sites of contact between the catalyst initial particles. At high coke content the coke deposits over the free areas with the surface negative curvature. The degree of surface coverage with coke increases as the coke content grows from a “mosaic” (consisting of the patches covered and noncovered with coke) to full coverage. Under diffusion regime atT > 923 K, coke precipitates mainly on the surface of aggregates of the catalyst initial particles. The models and analytical relations are suggested for the analysis of coke distribution.
Cite:
Fenelonov V.B.
, Prokudina N.A.
, Okkel L.G.
Texture of Coke Depositing on γ-Al2O3 Biporous Granules under Kinetic and Diffusion Regimes
Journal of Porous Materials. 1996. V.3. N1. P.23-32. DOI: 10.1007/BF01135358 WOS Scopus РИНЦ
Texture of Coke Depositing on γ-Al2O3 Biporous Granules under Kinetic and Diffusion Regimes
Journal of Porous Materials. 1996. V.3. N1. P.23-32. DOI: 10.1007/BF01135358 WOS Scopus РИНЦ
Dates:
Submitted: | Jul 8, 1994 |
Accepted: | Sep 8, 1995 |
Published print: | Mar 1, 1996 |
Identifiers:
Web of science | WOS:000208128800003 |
Scopus | 2-s2.0-0029702510 |
Elibrary | 13239882 |
Chemical Abstracts | 1996:654364 |
Chemical Abstracts (print) | 126:10740 |
OpenAlex | W1997287189 |