Thermal decomposition of several N,N′-bis(2-hydroxyiminoalkyl)-α,α′-dinitrones

V. A. Logvinenko, V. P. Fadeeva, B. A. Selivanov, V. D. Tikhova, A. A. Nefedov, A. Ya Tikhonov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

N,N′-Bis(2-hydroxyiminoalkyl)-α,α′-dinitrones are of interest for the synthesis of 1,1′-dihydroxy-2,2′-biimidazoles. Thermal decomposition of two these dinitrones was studied in helium atmosphere. Thermal decomposition of the studied dinitrones at temperature interval 20–500 °C consists of several steps, the first step accompanying with significant exothermic effect (700–1000 J g−1). The first step has been shown to be a two-stage process, and decomposition products have been determined using chromatography–mass spectrometry. Thermogravimetric curves were used for the kinetic studies. Kinetic parameters of decomposition are estimated within the approaches of non-isothermal kinetics (“model-free” kinetics and nonlinear regression methods), with the computer program Netzsch Thermokinetics 2.

Original languageEnglish
Pages (from-to)685-693
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
Volume140
Issue number2
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • Dinitrones
  • Kinetic stability
  • Non-isothermal kinetics
  • Organic compounds
  • APPROXIMATION
  • COMPLEXES
  • KINETIC-ANALYSIS
  • DEGRADATION
  • ACTIVATION-ENERGY
  • DERIVATIVES

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