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EFFECTS OF IMPURITIES IN THE KINETICS OF CALCITE DECOMPOSITION

被引：42
作者：
CALVO, EG
ARRANZ, MA
LETON, P
机构：
来源：
THERMOCHIMICA ACTA | 1990年 / 170卷
关键词：
D O I：
10.1016/0040-6031(90)80519-5
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The effects of impurities on the observed kinetic parameters of calcium carbonate decomposition were studied. The kinetic parameters observed were found to be strongly affected by small amounts of impurities; however, the kinetic model is not affected. Therefore the activation energy for calcite containing at least 98.2% of calcium carbonate is 110.5 kJ mol-1 and for calcite with 99.5% of calcium carbonate it is 193.8 kJ mol-1. The kinetic model in both cases is a superficial reaction in cylindrical geometry. © 1990.
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页码：7 / 11
页数：5
相关论文
共 7 条
[1]   USE OF LANGMUIR METHOD FOR KINETIC STUDIES OF DECOMPOSITION REACTIONS - CALCITE (CACO3) [J].
BERUTO, D ;
SEARCY, AW .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1974, 70 :2145-2153
[2]   CALCINATION KINETICS AND SURFACE-AREA OF DISPERSED LIMESTONE PARTICLES [J].
BORGWARDT, RH .
AICHE JOURNAL, 1985, 31 (01) :103-111
[3]  
Gallagher P.K., 1973, THERMOCHIM ACTA, V6, P67, DOI 10.1016/0040-6031(73)80007-3
[4]   THE RATE ACTIVATION ENTHALPY OF DECOMPOSITION OF CACO3 [J].
POWELL, EK ;
SEARCY, AW .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1980, 11 (03) :427-432
[5]   KINETIC-ANALYSIS OF TG DATA - THERMAL DEHYDRATION OF NI(II), CO(II) AND MG(II) ACETATE TETRAHYDRATES [J].
SALVADOR, AR ;
CALVO, EG ;
LETON, P .
THERMOCHIMICA ACTA, 1989, 154 (02) :263-269
[6]   KINETIC-ANALYSIS OF THERMOGRAVIMETRIC DATA - DISCRIMINATION OF INTEGRAL MODELS [J].
SALVADOR, AR ;
CALVO, EG ;
GULIAS, AI .
THERMOCHIMICA ACTA, 1984, 73 (1-2) :101-108
[7]   EFFECTS OF SAMPLE WEIGHT, PARTICLE-SIZE, PURGE GAS AND CRYSTALLINE-STRUCTURE ON THE OBSERVED KINETIC-PARAMETERS OF CALCIUM-CARBONATE DECOMPOSITION [J].
SALVADOR, AR ;
CALVO, EG ;
APARICIO, CB .
THERMOCHIMICA ACTA, 1989, 143 :339-345
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