%0 Journal Article
%T Application of a multi-channel in-situ infrared spectroscopy: The case of LLM-105.
%A Xiao Q
%A Sui H
%A Hao X
%A Chen J
%A Yin Y
%A Yu Q
%A Yang X
%A Ju X
%J Spectrochim Acta A Mol Biomol Spectrosc
%V 240
%N 0
%D Oct 2020 15
%M 32574988
%F 4.831
%R 10.1016/j.saa.2020.118577
%X The thermal decomposition process of 2,6-diamino-3,5-dinitropyrazine-1-oxide(LLM-105)under several constant temperatures (100 °C, 115 °C, 130 °C, and 145 °C) have been studied by a multi-channel in-situ reaction system. Almost 1000 spectra were obtained within 24 days by Fourier-transform infrared spectroscopy (FT-IR). The thermal decomposition activation energies (Eα) of C-NH2 and C-NO2 in LLM-105 were calculated by the Arrhenius equation to be 89.65 and 145.09 kJ mol-1, respectively. The thermal decomposition process of LLM-105 under long-term constant temperature is divided into two paths: intramolecular H-transfer and C-NO2 partition. It is feasible to study the aging process of materials using a combination of a multi-channel in-situ reaction system and FT-IR, which can effectively monitor the evolution of structure.