Caluire, France –?? The accurate characterisation of synthesis, transformation or purification processes is very important for industrial applications. The thermal behavior of materials submitted to high pressure processes during manufacturing or transformation may be misunderstood if their physicochemical properties are determined under normal pressure conditions.
Although calorimetry has been extensively used to assess the subsequent effect of material exposure to high pressures, it can be noticed that high pressure calorimetry (or calorimetric experiments directly operated at high pressures) could be more widely employed.
Originally developed for the field of gas hydrate formation / dissociation, SETARAM Instrumentation high pressure systems has now been adapted to a wider range of calorimeters and applications (polymer, food, pharmaceutical, energy, etc.).
Based on the Calvet technology, calorimeters have been designed with vessels operating up to 1 000 bars and temperatures between ???120 ??C and 600 ??C. A dedicated high pressure panel is attached to the HP calorimeters to cover the pressure range either under controlled pressure scanning or isobaric conditions.
This approach, together with the Joule effect technology used to calibrate Calvet calorimeters, allow the sensitivity of the instrument (i.e. the electrical signal / evolved sample heat effect ratio) to be pressure independent. It avoids repetitive and long standard melting calibration procedures at each tested pressures.
Visit the SETERAM website at www.seteram.com to access their extensive library of Applications Notes, Technical papers & posters and other resources to help you better understand how to utilize this measurement technology for your process.
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