A COMBINED MAS NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY, IN-SITU FT INFRARED-SPECTROSCOPY AND CATALYTIC STUDY OF THE CONVERSION OF ALLYL ALCOHOL OVER ZEOLITE CATALYSTS

A combined study of allyl alcohol conversion over zeolite catalysts us ing catalytic measurements in a flow microreactor, in situ FTIR and MA S NMR spectroscopy is reported. Rate constants for the conversion in t he flow reactor and the static in situ reactor used in the FTIR studie s are in broad agreement, emphasising the viability of the experimenta l approach. In the flow microreactor allyl alcohol conversion over the zeolite catalyst is shown to form diallyl ether, hydrocarbons and acr olein. The in situ study successfully models the formation of diallyl ether and hydrocarbon as initial reaction products, but unfortunately acrolein is found to be rapidly converted to hydrocarbons under the co ndition used in the in situ cells. The studies are combined to provide a model for the reaction which involves two parallel pathways for the formation of the hydrocarbons and acrolein.