TY - JOUR
T1 - Effects of incompatible substances on thermal stability of dimethyl 2,2′-azobis(2-methylpropionate) (AIBME) in the application process
AU - Zhou, Nengcheng
AU - Hua, Min
AU - Yu, Andong
AU - Wang, Weijun
AU - Pan, Xuhai
AU - Wei, Chenye
AU - Jiang, Juncheng
N1 - Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/7
Y1 - 2021/7
N2 - Dimethyl 2,2′-azobis (2-methylpropionate) (AIBME) is an oil-soluble azo initiator whose nature is unstable. In the chemical process, acids, alkalines or catalysts are often added to catalyze reactions. However, the decomposition process of the azo compounds may change when it is in contact with incompatible substances. In order to investigate the effects of common substances (hydrochloric acid (HCl), sodium hydroxide (NaOH), iron oxide (Fe2O3)) on the thermal stability of AIBME, differential scanning calorimetry (DSC) was utilized to obtain thermodynamic parameters. The dynamic calculations were carried out by Kissinger and Ozawa method. Meanwhile, adiabatic calorimeter Phi-TEC II was used to simulate the occurrence of thermal runaway of AIBME mixed with three incompatible substances under adiabatic conditions. Based on the adiabatic kinetic analysis, temperature at the time to maximum rate for 8 h (TD8) and 24 h (TD24) were obtained. Self-accelerating decomposition temperature (SADT) was calculated by the Semenov thermal spontaneous combustion theory. Non-isothermal experimental results showed that HCl reduced the activation energy of AIBME and increased its potential risk, while NaOH and Fe2O3 had inverse effect. In the adiabatic decomposition process, HCl and NaOH decreased the adiabatic temperature rise (ΔTad) of AIBME, but Fe2O3 had less influence. In addition, calculations for SADT of mixtures indicated that a low temperature environment should be provided for storage and transportation.
AB - Dimethyl 2,2′-azobis (2-methylpropionate) (AIBME) is an oil-soluble azo initiator whose nature is unstable. In the chemical process, acids, alkalines or catalysts are often added to catalyze reactions. However, the decomposition process of the azo compounds may change when it is in contact with incompatible substances. In order to investigate the effects of common substances (hydrochloric acid (HCl), sodium hydroxide (NaOH), iron oxide (Fe2O3)) on the thermal stability of AIBME, differential scanning calorimetry (DSC) was utilized to obtain thermodynamic parameters. The dynamic calculations were carried out by Kissinger and Ozawa method. Meanwhile, adiabatic calorimeter Phi-TEC II was used to simulate the occurrence of thermal runaway of AIBME mixed with three incompatible substances under adiabatic conditions. Based on the adiabatic kinetic analysis, temperature at the time to maximum rate for 8 h (TD8) and 24 h (TD24) were obtained. Self-accelerating decomposition temperature (SADT) was calculated by the Semenov thermal spontaneous combustion theory. Non-isothermal experimental results showed that HCl reduced the activation energy of AIBME and increased its potential risk, while NaOH and Fe2O3 had inverse effect. In the adiabatic decomposition process, HCl and NaOH decreased the adiabatic temperature rise (ΔTad) of AIBME, but Fe2O3 had less influence. In addition, calculations for SADT of mixtures indicated that a low temperature environment should be provided for storage and transportation.
KW - Adiabatic calorimeter phi-TEC II
KW - Chemical process
KW - Differential scanning calorimetry (DSC)
KW - Dimethyl 2,2′-azobis(2-methylpropionate) (AIBME)
KW - Thermal stability
UR - http://www.scopus.com/inward/record.url?scp=85104466619&partnerID=8YFLogxK
U2 - 10.1016/j.jlp.2021.104478
DO - 10.1016/j.jlp.2021.104478
M3 - 文章
AN - SCOPUS:85104466619
SN - 0950-4230
VL - 71
JO - Journal of Loss Prevention in the Process Industries
JF - Journal of Loss Prevention in the Process Industries
M1 - 104478
ER -