Abstract
The influences of inactive, flowing atmospheres (noble gases, nitrogen, carbon dioxide, synthetic air) and vacuum (10−2 and 10−5 torr) on the thermal decompositions of inorganic and organic substances are discussed on the basis of literature and experimental data. The fact that it is necessary to use a controlled gas atmosphere from the preparation of samples up to the study of the mechanisms of solid-state reactions is proved by several examples. Results are presented relating to the decompositions of silver(I) oxalate, potassium acetate, and a natural mixture of clays and alkaline earth metal carbonates, to the behaviour ofβ-manganese(IV) oxide and to the low-temperature dehydroxylation of kaolin, as studied especially by TG, DTG, DTA and MS methods.
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