Decomposition mechanism of AC series is complex and depends on the heating range and the process condition.
By these reactions, AC series is decomposed and evolved gases several kinds of gases as follows：
Table 1. The volume ratio of evolved gases depending on temperature and the ratio of gases and residues after decomposition
|
Gas/ Temp
|
181~198℃
|
210~220℃
|
250~280℃
|
|
Evolved gas volume（%）
|
185~218
|
263~322
|
355~454
|
|
Residue after decomposition(%)
|
72.5~76.7
|
61.3~68.0
|
46.9~56.5
|
|
Gaseous product after decomposition(%)
|
23.3~27.5
|
32.0~38.7
|
43.5~53.1
|
|
Evolved gases
|
N2 (%)
|
70.8~72.9
|
53.9~58.8
|
42.6~48.9
|
|
CO(%)
|
26.0~26.5
|
32.9~33.1
|
36.2~40.8
|
|
NH3 (%)
|
0~0.9
|
7.4~12.0
|
8.2~19.1
|
|
CO2 (%)
|
1.0~1.8
|
0.7~1.2
|
2.1~2.2
|
The change of gas components on temperature
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