In the larger crystallite size sample, H2 evolution makes up for 64 % of acetone evolution at a 2-propanol: O2 ratio of 2:1 in the first cycle at 400 °C, where 2-propanol and O2 conversions reach 73 % and 100 %, respectively. Out of the 73 % of 2-propanol converted, 53 % is converted to acetone, out of which 64 % is non-oxidatively dehydrogenated and the remainder part is oxidatively dehydrogenated. This corresponds to 14 % of the 2-propanol starting concentration.