Thermal hazard assessment by TGA, DSC, and ARC experimental and simulated thermokinetic approaches for trinitrophloroglucinol

Liu, Ye-Cheng; Zhou, Hai-Lin; Tang, Yan; Li, You; Zhai, Juan; Jiang, Juncheng; Zhang, Xing; Huang, An‐Chi

doi:10.1007/s10973-022-11649-1

Cited by 12 publications

(1 citation statement)

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“…Industrial safety is of great concern. In the preparation and application of many important chemical products, their decomposition temperatures, activation energies, and exothermic quantities are important thermodynamic parameters [ 34 – 39 ]. BHTOOH can be generated in the industry along with the production and application of BHT, and these data provide a reference for the safety of the BHT-related industries.…”

Section: Resultsmentioning

confidence: 99%

Thermal decomposition characteristics of BHT and its peroxide (BHTOOH)

Dai,

Liang,

Cheng

et al. 2024

BMC Chemistry

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Abstract2,6-Di-tert-butyl-4-methylphenol (BHT) is an excellent antioxidant that is easily oxidized to 2,6-di-tert-butyl-4-hydroperoxyl-4-methyl-2,5-cyclohexadienone (BHTOOH). For the safety of BHT production and usage, it is meaningful to study the thermal stability and decomposition properties of BHT and BHTOOH. In this paper, the thermal decomposition properties of BHT and BHTOOH were compared by the mini closed pressure vessel test (MCPVT) and differential scanning calorimetry (DSC). Their kinetics of thermal decomposition were studied using thermogravimetric analysis (TGA). The thermal decomposition products of BHT and BHTOOH were analyzed by gas chromatography-mass spectrometry (GC–MS). The results show that there was no significant change in temperature pressure when BHT was warmed up under a nitrogen atmosphere, indicating that BHT was stable within 400 K. The thermal decomposition reaction of BHTOOH was rapid with an initial reaction temperature of 375.2 K. The initial exothermic temperature (Ti) and heat release (QDSC) of DSC were 384.9 K and 865.0 J g−1, respectively. The apparent activation energies (Ea) for the thermal decomposition reactions of BHT and BHTOOH calculated by the Kissinger method were 151.8 kJ mol−1 and 66.07 kJ mol−1, respectively. The main decomposition products of BHT were isobutene and 2-tert-butyl-4-methylphenol. The thermal decomposition products of BHTOOH included BHT, 2,6-di-tert-butyl-4-ethylphenol, 3,5-di-tert-butyl-4-hydroxybenzaldehyde, 4,4′-(1,2-ethanediyl) bis [2,6-bis (1,1-dimethylethyl) phenol, etc. Based on the thermal decomposition behavior and products, the reaction pathway has been described. These results indicate that BHT is a potential thermal hazard during production, storage and application. For the safety of the chemical industry, the oxidation of BHT should be avoided.

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Section: Resultsmentioning

confidence: 99%