KINETIC-ANALYSIS OF THERMAL-DECOMPOSITION REACTIONS .5. GAMMA-IRRADIATION EFFECTS ON THE THERMAL-DECOMPOSITION OF POTASSIUM NICKEL OXALATE

被引：11

作者：

DIEFALLAH, EHM ^{[1
]}

BASAHL, SN ^{[1
]}

ELFASS, MM ^{[1
]}

ALSABBAN, EA ^{[1
]}

机构：

[1] KING ABDULAZIZ UNIV,FAC SCI,DEPT CHEM,JEDDAH,SAUDI ARABIA

来源：

THERMOCHIMICA ACTA | 1991年 / 184卷 / 01期

关键词：

D O I：

10.1016/0040-6031(91)80145-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Differential thermal analysis-thermogravimetry techniques were used to study the thermal decomposition of potassium nickel(II) oxalate hexahydrate crystals and the effects of Co-60 gamma irradiation on the kinetics of the decomposition in air of K2Ni(C2O4)2 to NiO, K2C2O4 and CO2. The kinetics of the isothermal decomposition were studied over the temperature range 310-350-degrees-C, both for irradiated and non-irradiated K2Ni(C2O4)2.6H2O crystals. Kinetic analysis of the results according to the various theoretical models of solid state reactions showed that the best fit is obtained for the first-order and the diffusion models. There is a decrease in both the energy of activation and the frequency factor with increasing radiation dose. The mechanism of the thermal decomposition and the effects produced by radiolysis were discussed.

引用

页码：141 / 150

页数：10

共 24 条

[1]

Billington D.S., 1961, RAD DAMAGE SOLIDS

[2]

BOLDYREV VV, 1979, CONTROL REACTIVITY S

[3] THERMAL DECOMPOSITION OF OXALATES .9. THERMAL DECOMPOSITION OF OXALATE COMPLEXES OF IRON [J].

BROADBEN.D ;

DOLLIMOR.D ;

DOLLIMOR.J .

JOURNAL OF THE CHEMICAL SOCIETY A -INORGANIC PHYSICAL THEORETICAL, 1967, (03) :451-&

[4]

BROADBENT D, 1969, THERM ANAL, V2, P739

[5]

BROWN ME, 1988, INTRO THERMAL ANAL, pCH13

[6] THERMAL DECOMPOSITION OF POTASSIUM TRIS(OXALATO)FERRATE(III) [J].

DANFORTH, JD ;

DIX, J .

INORGANIC CHEMISTRY, 1971, 10 (08) :1623-&

[7] CHEMISTRY AND KINETICS OF THERMAL DECOMPOSITION OF ZINC AND MAGNESIUM OXALATES [J].

DANFORTH, JD ;

DIX, J .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (25) :6843-&

[8] THERMAL DECOMPOSITION OF OXALATES .2. THERMOGRAVIMETRIC ANALYSIS OF VARIOUS OXALATES IN AIR AND IN NITROGEN [J].

DOLLIMORE, D ;

NICHOLSON, D ;

GRIFFITHS, DL .

JOURNAL OF THE CHEMICAL SOCIETY, 1963, (MAY) :2617-&

[9] INFRARED SPECTRA OF METALLIC COMPLEXES .3. THE INFRARED SPECTRA OF METALLIC OXALATES [J].

FUJITA, J ;

NAKAMOTO, K ;

KOBAYASHI, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1957, 61 (07) :1014-1015

[10]

Gallagher P. K., 1974, Thermal Analysis: Comparative Studies on materials, P17

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