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

This research explores the changing catalytic behavior of titanium silicalite-1 incorporated with vanadium. In this research, the changing catalytic behavior of the prepared catalysts, physically and chemically were tested by using several techniques. The catalytic activity of the catalysts were tested using 2-propanol oxidation reaction at the concentration of oxygen 8% vol, 2-propanol 5% vol with argon balance in feed gas. The catalytic test reaction was carried out with 0.1 gram of catalyst packed in a microreacter at temperature ranging from 100-500 ํC at atmosphere pressure. This research found that the vanadium incorporated into titanium silicalite-1 causes the changing of the catalytic behavior of the vanadium-titanium silicalite-1. The highest quantity of vanadium can be incorporated into titanium silicalite-1 before the collapse MFI structure is about 0.3% mol. The surface area of the prepared catalysts decrease inversely with the amount ofvanadium incorporated into titanium silicalite-1. For catalytic activity of titanium silicalite-1 incorporated with vanadium, it is found that the vanadium added into catalyst improves the dehydration reaction. In addition, the vanadium existing on the surface of the catalyst has some influence on the oxidation and dehydration reactions.