Abstract
A new high-temperature (up to at least 1273 K) setup for inverse drop calorimetry was designed and assembled. This calorimeter uses a differential thermopile as a heat-flow sensor. The thermopile design features significant number of thermocouple junctions at the bottom of the measurement crucible in addition to those surrounding its side surface. The samples, held at room temperature, can be introduced through an autosampler into the crucible inside the calorimetric cell, heated up by means of a homebuilt three-winding wire furnace with large isothermal zone. The calorimeter performance in drop experiments was verified and compared with that of a commercially available device of the same kind. In addition, a few drop solution experiments were made; obtained, as a result, enthalpies of formation of CsPbX3 (X = Br, I) were found to be in agreement with those reported earlier.
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