Compound

Step

Coats-Redfern equation

Horowitz-Metzger equation

r

n

E

Z

r

n

E

Z

1

1st

0.9919

0.00

97.1

1.95 x 103

0.9983

0.00

105.1

5.19 x 104

0.9907

0.33

106.2

2.13 x 103

0.9987

0.33

114.1

1.07 x 105

0.9912

0.50

111.2

2.24 x 103

0.9988

0.50

118.6

1.57 x 105

0.9901

0.66

116.0

2.34 x 103

0.9990

0.66

123.5

2.32 x 105

0.9895

1.00

125.7

2.53 x 103

0.9992

1.00

133.4

5.11 x 105

0.9967

2.00

159.7 3.24 x 103 0.9997

2.00

166.7 6.39 x 106
4 1st

0.9968

0.00

18.4

5.34 x 106

0.9996

0.00

29.6

1.57 x 105

0.9954

0.33

23.3

4.71 x 102

0.9998

0.33

34.9

2.42 x 105

0.9952

0.50

25.5

5.16 x 102

0.9999

0.50

37.8

7.07 x 105

0.9958

0.66

28.2

5.70 x 102

0.9999

0.66

40.7

8.05 x 105

0.9974

1.00

34.5

6.97 x 102

1.0000

1.00

47.1

2.25 x 106

0.9920

2.00

55.1

11.07 x 102

1.0000

2.00

69.8 11.53 x 106

 

5

 

 

1st

 

0.9972

0.00

51.35

1.03 x 103

0.9992

0.00

53.06

3.32 x 106

0.9984

0.33

63.23

1.27 x 103

0.9996

0.33

64.15

6.65 x 106

0.9991

0.50

70.84

1.42 x 103

0.9998

0.50

70.75

7.04 x 105

0.9994

0.66

77.97

1.56 x 103

0.9824

0.66

89.34

5.87 x 106

0.9999

1.00

95.00

1.80 x 103

0.9998

1.00

94.13

8.83 x 106

0.9997

2.00

156.90

3.09 x 103

0.9995

2.00

147.50

3.78 x 104

E in kJ mol-1, underlined r in all tables represents the best fit values of n and E
Table 3: Kinetic parameters for the thermal decomposition of the compounds.