Alcohol Dehydration Reactions over Tungstated Zirconia Catalysts

摘要: Abstract The behavior of tungstated zirconia (WZ) toward dehydration 1-propanol, 2-propanol, and tert .-butanol was compared with that H-mordenite. For 1- the desorption temperatures olefinic products formed over WZ catalyst were found to be very close those observed in H-mordenite; however, zeolite had a much larger tendency retain (or readsorb) olefins pores form oligomerization products, as evidenced by detection m/e =65 signal (cyclopentadienyl cation) during temperature-programmed reaction 2-propanol. Bronsted acid sites underwent rapid H + /D exchange when 2-propanol deuterated its hydroxyl group used. This allowed incorporate deuterium reaction. On other hand, did not effect propene from CH 3 –HCOD–CH , presumably because olefin readsorption onto hydrated W 6+ does take place. structure monitored EXAFS XRD.