Thermal Decomposition of Tetraethylammonium Perchlorate
01 Dec 1982-Propellants, Explosives, Pyrotechnics (WILEY‐VCH Verlag GmbH)-Vol. 7, Iss: 6, pp 155-157
TL;DR: The mass spectral data suggest that the salt undergoes thermal decomposition into neutral particles which are then vapourized and ionized as well as oxidized as mentioned in this paper, and the heat of phase transformation is calculated to be 2.5 kcal/mol.
Abstract: Thermal decomposition of tetraethylammonium perchlorate has been studied by thermogravimetry, differential thermal analysis and mass spectrometry. The title compound undergoes crystallographic transformation at 98°C and explodes at 298°C. The heat of phase transformation is calculated to be 2.5 kcal/mol. The mass spectral data suggest that the salt undergoes thermal decomposition into neutral particles which are then vapourized and ionized as well as oxidized.
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TL;DR: The thermolysis of various substituted ammonium salts of nitric and perchloric acids has been reviewed and it has been observed that the proton transfer process do play a major role during thermolyses of these salts.
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TL;DR: In this article, the authors studied the thermal decomposition of tetraethyl ammonium tetrafluoroborate in an inert atmosphere of pure Helium gas at a sample heating rate of 5 kmin−1 employing a platinum crucible.
Abstract: Thermal decomposition of tetraethyl ammonium tetrafluoroborate has been studied employing simultaneous techniques of TG–DTG–DSC—quadrupole mass spectrometric techniques in an inert atmosphere of pure Helium gas at a sample heating rate of 5 K min−1 employing a platinum crucible. The observed decomposition paths are the most commonly expected Hofmann elimination and substitution reactions paths.
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Cites result from "Thermal Decomposition of Tetraethyl..."
...Similar observation in respect of thermal decomposition of tetraethylammonium perchlorate by Udupa [29] and by Haskins [30] with respect to the thermal degradation of benzyltrialkylammonium salts, support this argument....
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TL;DR: In this article, the thermal decomposition of benzyl-triethyl-ammonium tetrafluoroborate (BTEATFB) employing simultaneous TG-DSC coupled with a quadrupole mass spectrometer is considered.
Abstract: Mechanistic aspects of the thermal decomposition of benzyl-triethyl-ammonium tetrafluoroborate (BTEATFB) employing simultaneous TG-DSC coupled with a quadrupole mass spectrometer are considered in this work The experiments were conducted in an inert atmosphere of helium The decomposition of BTEATFB proceeds through several competing mechanisms While nucleophilic substitution reaction occurs through the formation of a tertiary amine and plays an important role in the initial stages of the decomposition, and the probability of Hoffman elimination also exists
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Cites background from "Thermal Decomposition of Tetraethyl..."
...The formation of an intermediate amine in the thermal decomposition of quaternary ammonium compounds was reported by Haskins and Mitchell [8], Udupa [16], Nambiar et al....
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...The formation of an intermediate amine in the thermal decomposition of quaternary ammonium compounds was reported by Haskins and Mitchell [8], Udupa [16], Nambiar et al. [17], and Prasad and Krishnamurthy [18]....
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TL;DR: The mass spectral results suggest that guanidinium perchlorate undergoes thermal decomposition into neutral particles which are then vapourized, ionized, and oxidized to give melamine as discussed by the authors.
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References
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TL;DR: In this article, das Verhalten quartarer Alkaloidsalze im Massenspektrometer untersucht wurde drei prinzipiell verschiedene Verhaltensweisen:
Abstract: Es wurde das Verhalten quartarer Alkaloidsalze im Massenspektrometer untersucht. Dabei fanden sich drei prinzipiell verschiedene Verhaltensweisen:
1
Angriff des Anions an der N(b)-Methylgruppe unter Bildung des tertiaren Amins (Demethylierungsbase)und des Methylhalogenids.
2
Thermischer HOFMANN-Abbau unter Bildung eines ungesattigten Amins (HOFMANN-Base) und des Halogenwasserstoffs.
3
Angriff des Anions an einem der drei anderen N(b)-Substituenten unter Bildung eines tertiaren Amins und Eintritt des Halogenatoms in dieses (Substitution).
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TL;DR: In this paper, the preparation, characterization and thermal behaviour of morpholinium perchlorate are reported, followed by XRD, IR, TG, DTA and mass spectral techniques.
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