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effects of lithium carbonate decomposition, no direct evidence of lithium pentaferrite phase occurrence was revealed. Radiation-thermal ferritization whose duration is 10 min or longer leads to qualitative changes of the TG/DSC dependences

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. Lower temperatures of carbonate decomposition confirm weaker interactions between anions and brucite-like layers. Moreover, according to chemical composition of the hydrotalcites, water molecules evolved below 250 °C from the sample AN0 come not only

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. Thus, in the literature, various temperature ranges of calcium carbonate decomposition are given: 600–800 °C [ 15 , 19 ], 740–780 °C [ 16 ], 600–700 °C [ 11 ], 697–724 °C [ 24 ] and 550–1050 °C [ 12 ]. Stepkowska [ 22 ] shows that calcite decomposes

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. Traces of ammonia and water are also observed, thus suggesting the decomposition of small amounts of ammonium oxalate. At 875 °C all precursors eliminate CO 2 as a result of carbonate decomposition. The thermal decomposition of yttrium

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suited for data analysis) for the single-step decomposition of calcium carbonate. ICTAC used this synthetic data to test several kinetic methods [ 17 ]. The synthetic calcium carbonate decomposition showed a 16% relative standard deviation for activation

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attributed to refractory carbon and clays decomposition. Finally, between 700 and 800 °C, carbonates decomposition was observed. It could be observed that pyrolysis of SL reduces their organic matter content. In addition, biochar shows more thermally stable

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pre-heating temperature for determination of SOC by the loss-on-ignition (LOI) method. Meanwhile, the region >700 °C is dominated by mineral reactions including carbonate decomposition [ 24 ] and clay mineral degradation [ 25 ]. In non-calcareous soils

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