Study on the relationship between pyrolysis volatile products and structure of Shengli lignite using TG-FTIR-GC/MS

Liu, Jie; Wang, Ai Qi; Zhang, Chen; Li, Feng

doi:10.1007/s10973-021-11063-z

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…At T max1 , the volatiles containing aromatic rings are created for all the tested compounds. This is confirmed by the appearance of the following absorption bands: C-H stretching vibrations at 3030-3097 cm −1 , N-H deformation vibrations at 1619-1640 cm −1 , C Ar = C Ar [27,[31][32][33]. This indicates the formation of the same structure aromatic compounds as those observed in helium.…”

Section: Thermal Stability Of Compounds 1-9 (Synthetic Air Atmosphere)mentioning

confidence: 57%

Thermal properties and decomposition mechanism of disubstituted fused 1,2,4-triazoles considered as potential anticancer and antibacterial agents

Worzakowska

Sztanke

2022

J Therm Anal Calorim

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Thermal resistance is a very important parameter when assessing the therapeutic usefulness of potential pharmaceutics. Therefore, the thermal behaviour and the decomposition mechanism in the atmosphere of helium and synthetic air of disubstituted fused 1,2,4-triazoles—which may be potential anticancer and antibacterial agents—were studied with a use of simultaneous thermal analysis: thermogravimetry/differential scanning calorimetry (TG/DTG/DSC) coupled online with Fourier transform infrared spectroscopy. It was confirmed that the thermal stability of the tested compounds is directly depended on their structure and thus on the number of chlorine atoms as substituents. The pyrolysis process of disubstituted fused 1,2,4-triazoles in inert conditions runs in two main, non-well-separated stages connected with the emission of NH3, HCN, acetonitrile, aromatics with an OH group, aromatics with a NH2 groups, H2O, CO2 and alkene fragments. However, the thermal stability of those compounds in synthetic air atmosphere is comparable or lower than their thermal stability in helium atmosphere. The decomposition of the tested compounds runs through at least three main stages, resulting in the emission of the same type of volatiles as in inert conditions plus the additional emission of CO and some carbonyl fragments for compounds with no or one chlorine atom as a substituent. The results indicate a simultaneous cleavage of C–N, N–N and C–O bonds during heating of the tested disubstituted fused 1,2,4-triazoles in inert conditions and additional combustion process of pre-formed residues in oxidative conditions.

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Section: Thermal Stability Of Compounds 1-9 (Synthetic Air Atmosphere)mentioning

confidence: 57%

Thermal properties and decomposition mechanism of disubstituted fused 1,2,4-triazoles considered as potential anticancer and antibacterial agents

Worzakowska

Sztanke

2022

J Therm Anal Calorim

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Construction of the structure model of zhaotong lignite skeleton by TG- GC/MS and 13C-NMR data

Liu

Chuanyong²,

Zhang³

et al. 2022

J Therm Anal Calorim

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Study on the relationship between pyrolysis volatile products and structure of Shengli lignite using TG-FTIR-GC/MS

Cited by 2 publications

References 39 publications

Thermal properties and decomposition mechanism of disubstituted fused 1,2,4-triazoles considered as potential anticancer and antibacterial agents

Thermal properties and decomposition mechanism of disubstituted fused 1,2,4-triazoles considered as potential anticancer and antibacterial agents

Construction of the structure model of zhaotong lignite skeleton by TG- GC/MS and 13C-NMR data

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