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Prize in chemistry (1901) to J. H. van’t Hoff. Kinetic studies do not only predict thermal decomposition mechanisms, but also the data obtained are extremely important in designing such devices where thermal decomposition takes place. The postulation of

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thermal decomposition kinetics of magnesite enable us to better understand the decomposition mechanism, control steps, and the various factors on the process of thermal decomposition, thereby allowing us to optimize the thermal decomposition conditions for

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Journal of Thermal Analysis and Calorimetry
Authors: Berta Holló, Milena Krstić, Sofija P. Sovilj, György Pokol, and Katalin Mészáros Szécsényi

general interest in the case of potential bioactive compounds [ 13 – 15 ]. Besides, the thermal decomposition pattern may help us to estimate the bond strength, redox properties, and exchangeability of the central atoms in the molecule [ 16 ], thus

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containing crystalline water are heated, one endothermic effect (always below 200 °C) corresponds to a release of the water molecules. Afterward, the thermal decomposition occurs at higher temperatures depending on the composition of the starting compound

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343 Gonska, H. , On the composition and decomposition of positive linear operators, in: Approximation Theory and its Applications (Ukrainian) (Kiev, 1999), 161–180, Pr. Inst. Mat. Nats

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. Dietzenbacher , E. – Hoekstra , R. ( 2002 ): The RAS Structural Decomposition Approach . In: Hewings , G. J. D. – Sonis , M. – Boyce , D. (eds): Trade, Networks and Hierarchies. Modelling, Regional and Interregional Economies . Springer , pp

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Journal of Thermal Analysis and Calorimetry
Authors: Juliusz Leszczynski, Krzysztof T. Wojciechowski, and Andrzej Leslaw Malecki

structure. Phase diagram for the Co-Sb system is well known [ 1 ]. CoSb 3 is the δ phase, which is stable up to 874 °C. Above this temperature it undergoes peritectic decomposition into liquid and CoSb 2 γ phase, stable up to 936 °C. In recent times

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Introduction Thermal dehydration and decomposition studies of metal salts hydrates have gained significant importance [ 1 , 2 ]. One of the reasons is the ability to receive, in these processes, materials with high

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Abstract  

Thermal decomposition of natural pyrite (cubic, FeS2) has been investigated using X-ray diffraction and57Fe Mössbauer spectroscopy. X-ray diffraction analysis of pyrite ore from different sources showed the presence of associated minerals, such as quartz, szomolnokite, stilbite or stellerite, micas and hematite. Hematite, maghemite and pyrrhotite were detected as thermal decomposition products of natural pyrite. The phase composition of the thermal decomposition products depends on the temperature, time of heating and starting size of pyrite crystals. Hematite is the end product of the thermal decomposition of natural pyrite.

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Results are presented on the thermal behaviour of two derivatives of malic acid. The decomposition intermediates obtained at about 400‡C were identified as derivatives of malonic acid. For some individual thermal decomposition steps, the values of the non-isothermal kinetic parameters were determined.

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