A procedure for minimizing temperature overshoots during pressure build-up and release in kinetic experiments

In this paper a single vessel system for high pressure - low temperature kinetic experiments installed at Kobe University, Konan Women's University, Japan, on the basis of a new high pressure vessel developed in the High Pressure Research Center, Poland, is outlined. A study of temperature distribution inside the vessel during treatment is described. A large temperature gradient, mostly due to adiabatic heating/cooling, can lead to serious errors in defining experimental conditions in kinetic experiments. In order to minimize the temperature overshoots during pressure build-up and release, we applied a procedure of vessel temperature control which allows us to maintain simple temperature at almost constant level during experiment.