High temperature solution calorimetry. Part 1. Development of a spherical solution calorimeter

Abstract

A high temperature solution calorimeter of a novel design has been developed whereby the separated components are brought together and mixed within a completely enclosed, vacuum-sealed cell. The instrument consists of an inner spherical compartment containing the reaction cell, surrounded by a number of concentric spherical shells made of Inconel alloy. The calorimeter may be operated at temperatures up to 1 200 °C. The temperature-sensing circuit includes a differential thermopile, a d-c. microvolt amplifier, and a recording millivoltmeter. With this instrument calorific effects of the order of 0.1 cal could be detected.