Thesis (M.Eng.)--Chulalongkorn University, 2005

To study the effect of oxygen concentration on the gas phase oxidation of 2-propanol over TS-1 catalyst with the oxygen concentration in the feed gas varies from 2 to 16 vol% of 2-propanol in the reaction temperature ranging from 100-500 ํC and atmospheric pressure. The research found that 2-propanol conversion in the low reaction temperature range (150-300 ํC) slightly increases with the increase of oxygen concentration. For the high reaction temperature range (350-500 ํC), the 2-propanol conversion is independent on the oxygen concentration. In addition, increasing the oxygen concentration, from 2 to 8 vol% adversely affects the selectivity of propylene in reaction temperature ranging from 300-500 ํC. On the other hand, when the oxygen concentration is increased above vol%, the selectivity to acetone rises and then drops when the reaction temperature raised beyond 350 ํC whereas the selectivity to carbondioxide increases continually