Micropore growth model for endothermic gasification reactions under reaction control
In most microscopic type gas-solid reaction models, the micropore length is assumed to be constant and the gasification is assumed to enlarge the radius of the micropores. Several sets of published pore size distribution data on carbon activation were analyzed on the basis of the pore system in which micropores are assumed to be growing uniformly on the surface of spherical macropores. Mesopores are assumed to provide the connection among macropores. The analysis showed that micropore length did reach steady state within a short period of reaction time, and it then remained constant even after 85% of the carbon had been gasified. Furthermore, the gasification temperature is the major factor controlling the steady state micropore length.
- Research Organization:
- Dept. of Chemical Engineering, Univ. of Arkansas, Fayetteville, AR 72701
- OSTI ID:
- 6415768
- Report Number(s):
- CONF-851123-
- Resource Relation:
- Conference: American Institute of Chemical Engineers annual winter meeting, Chicago, IL, USA, 10 Nov 1985; Other Information: 126E
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
CARBON
GASIFICATION
MATHEMATICAL MODELS
MICROSTRUCTURE
POROSITY
STRUCTURAL CHEMICAL ANALYSIS
ACTIVATION ENERGY
CHEMICAL ACTIVATION
CHEMICAL REACTION KINETICS
COALESCENCE
GASES
HEAT TRANSFER
MICROSCOPY
SOLIDS
CRYSTAL STRUCTURE
ELEMENTS
ENERGY
ENERGY TRANSFER
FLUIDS
KINETICS
NONMETALS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry
400201 - Chemical & Physicochemical Properties
360602 - Other Materials- Structure & Phase Studies