Dehydrogenation of 2-propanol releasing acetone and hydrogen, thermal decomposition of 2propanol releasing carbon monoxide and hydrogen and intermittent evolution of carbon dioxide are recognised. Additionally, residual oxygen is consumed by oxidative dehydrogenation, partial oxidation or total combustion. In the smaller crystallite size sample, acetone evolution starts at 80 °C and reaches a plateau between 400 °C and 450 °C. The interpretation of the signal of m/z = 28 is more complex, as carbon monoxide, fragments of 2-propanol, acetone and carbon dioxide and residual nitrogen all contribute to the intensity of this signal. Two steps of hydrogen and carbon monoxide evolution increasing independently from acetone can be recognised: first at 365 °C and second at 450 °C, which is when acetone evolution is plateauing and therefore indicates a thermal decomposition process. Carbon dioxide evolution can be observed starting from the very same temperatures, but declines drastically after climaxing at approximately 525 °C. In the larger crystallite size sample, acetone and hydrogen evolution start at 180 °C, although the level of 2-propanol decreases already at much lower temperatures.