Measurement of oxygen chemisorption and gasification rates by a pulse technique
Chemisorbed oxygen on char has been investigated over several years by many researchers in relation to the gasification mechanism or as an index of the gasification reactivity. Several methods have been developed to measure the amount of chemisorbed oxygen including volumetric, gravimetric, temperature programmed desorption (TPD), and flash desorption methods. The amount of chemisorbed oxygen, or the so called active surface area, measured by these relatively low temperature methods are sometimes far from oxygen adsorbed under reactive conditions. The pulse method has been used to measure reaction rates and to examine reaction mechanisms of solid catalyzed reaction for many years. Recently, this method has been applied to measure the combustion rate of chars or to clarify the mechanism of catalytic gasification. In this paper, the pulse technique is applied to simultaneously measure the chemisorption rate of oxygen, the amount of chemisorbed oxygen, and the gasification rate.
- Research Organization:
- Univ. of Waterloo, Ontario (Canada)
- OSTI ID:
- 5969609
- Report Number(s):
- CONF-8904169-
- Journal Information:
- Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 34:1; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404* -- Coal
Lignite
& Peat-- Gasification
ADSORPTION
CHARS
CHEMICAL ANALYSIS
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
CHROMATOGRAPHY
COAL GASIFICATION
DATA ANALYSIS
DECOMPOSITION
ELEMENTS
FLASH HEATING
GASIFICATION
GRAVIMETRIC ANALYSIS
HEATING
KINETICS
MASS BALANCE
NONMETALS
OXYGEN
PULSE TECHNIQUES
PYROLYSIS
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SEPARATION PROCESSES
SORPTION
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES