Heat-quench-heat method in adiabatic calorimetry: determining decomposition mechanism model and kinetic evaluation with lower thermal inertia experimental data

Zhao, Xiao-Qiao; Wu, Wei; Li, Huabo; Guo, Zichao; Chen, Liping

doi:10.1007/s10973-020-10490-8

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…Heat−Quench−Heat Method. Recently, Zhao 23 proposed the heat−quench−heat method in adiabatic calorimetry to determine the reaction model. A criterion was proposed to identify the reaction model, which states that the decomposition was an n-order reaction if T 0,stage1 < T 0,stage2 ; otherwise, it observed autocatalytic behavior.…”

Section: Determination Of Exchange Capacitymentioning

confidence: 99%

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Green and Low-Cost Synthesis of Thermally Stable Cation-Exchange Resin-Supported Diazonium Salt: An Example of Weakly Basic p-Nitroaniline Diazotization

Liu,

Feng,

Yan

et al. 2023

Org. Process Res. Dev.

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Wide applications of diazonium salts (DS) are limited due to their nature of poor thermal stability and explosive hazards. In this work, strong acid cation-exchange resin (Amberlyst-15), as an acid and anion provider, was used to synthesize the corresponding diazonium salt of weakly basic p-nitroaniline (p-NA). The thermal stability of raw materials (p-nitroaniline, Amberlyst 15) and cation-exchange resin-supported DS (CER-supported DS) was characterized by DSC and ARC, respectively. The synthesis conditions were optimized, and the exothermicity of the diazotization reaction was characterized by reaction calorimetry. Diazonium salts of p-NA were demonstrated to be obtained and chemisorbed on the cation-exchange resin surface. The optimal yield of CERsupported DS reached up to 80%. The initial decomposition temperature and decomposition energy of the CER-supported DS were about 55 °C and 183 J/g, respectively. The decomposition process of the CER-supported DS followed a single n-order reaction model, and the main decomposition product was p-nitrophenol. The merits of this synthesis method include being free of environmentally harmful inorganic acids and high-cost of tert-butyl nitrites and having good storage stability.

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Section: Determination Of Exchange Capacitymentioning

confidence: 99%

“…The operation of grinding CER- supported DS was dangerous; therefore, no DSC test of CERsupported DS was reported in the article. The ARC experiment with the "heat−quench−heat" method 23 was used to determine the decomposition type of CER-supported DS.…”

Section: Thermal Decomposition Kinetics Of Cer-supported Dsmentioning

confidence: 99%