Thermogravimetric (TG) instruments measure and record mass change as a function of temperature and/or time. These instruments provide a variety of information including thermal and oxidative stability of materials, compositional analysis, and kinetics of degradation. They typically consist of a wire-wound or infrared furnace capable of reaching temperatures of 1000°C or more, mated to a highly sensitive thermobalance from which the sample to be studied is suspended. High pressure thermogravimetric instruments are specially designed to incorporate the furnace inside a pressure vessel. These instruments are ideal for studying sorption processes and general gas/solid or vapor/solid reactions that occur under conditions of high pressure or vacuum, and high temperature. A great variety of work has been done in the field of carbon sorption research using these instruments. This paper will review application examples on the storage of hydrogen, the sequestration of carbon dioxide, and the gasification of carbon-rich materials.
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