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Thermal behaviour of thallous perchlorate

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Abstract

Thermal decomposition characteristics of thallous perchlorate are investigated in nitrogen and in air using TG and DTA techniques. Isothermal studies at 380°, 400°, 420° and 440° in air and in nitrogen showed that the relative amounts of the decomposition products, namely, thallic oxide and thallous chloride, depend upon both the temperature and the atmosphere around the sample. At low pressures (5×10−1 mm/Hg) there is volatilization of thallous perchlorate even at 200°.

Résumé

On a étudié par TG et ATD les caractéristiques de la décomposition thermique du perchlorate de thallium(I) dans l'azote et dans l'air. Des études isothermes à 380, 400, 420 et 440°C dans l'air et dans l'azote ont montré que les taux relatifs de produits de décomposition, c'est-à-dire l'oxyde de thallium(III) et le chlorure de thallium(I), dépendent de la température ainsi que de l'atmosphère autour de l'échantillon. Sous faible pression (5 · 10−1 torr) le perchlorure de thallium(I) se volatilise même à 200°.

Zusammenfassung

Die thermischen Zersetzungscharakteristika von Thallium(I)-perchlorate wurden in Stickstoff und in Luft unter Anwendung der TG- und DTA-Techniken untersucht. Isotherme Studien bei 380°, 400°, 420° und 440° in Luft und in Stickstoff zeigten, daß die relativen Mengen der Zersetzungsprodukte, Thallium(III)oxid und Thallium(I) Chlorid, sowohl von der Temperatur als auch von der das Muster umgebenden Atmosphäre abhängen. Bei niedrigen Drücken (5×10−1 mm/Hg) verflüchtigt sich Thallium(I)perchlorat bei 200°.

Резюме

Исследован терморас пад перклората талли я в азоте и в воздухе с исп ользованием ТГ и ДТА. Изотермическ ий нагрев, при 380°, 400°, 420°, 440° в воздухе и в азоте пока зал, что относительные ко личества продуктов распада, а именно, окис и хлорида и таллия, зависят как от температуры, так и от о кружающей образец атмосферы. Пр и низких давлениях (5 · 10−1 мм рт.с т.)перхлорат таллия является летучим уже при 200°.

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One of us (A.S.G.) is thankful to the Council of Scientific and Industrial Research, India for the award of a fellowship.

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Giridharan, A.S., Udupa, M.R. & Aravamudan, G. Thermal behaviour of thallous perchlorate. Journal of Thermal Analysis 7, 65–71 (1975). https://doi.org/10.1007/BF01911626

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  • DOI: https://doi.org/10.1007/BF01911626

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