4.23 Sulfated Zirconia for n-Butane Isomerization Experimental and Theoretical Approaches
F Babou, B Bigot, G Coudurier, P Sautet… - Studies in Surface …, 1994 - Elsevier
Sulfated zirconia was prepared in conditions of optimal acidic properties, namely calcination
at 600° C and with 2 wt% sulfur content. Infrared studies allowed us to identify SO 3 species
by absorption bands at 1390 and 1027 cm− 1. Such a species was found to be very
sensitive to water giving rise with increasing water adsorption to IR bands first at 1368 and
1200 cm− 1 (assigned to adsorbed H 2 SO 4), then at 1320 and 1138 cm− 1 (attributed to
HSO 4-ions) and at last for H 2 O saturation at 1207, 1136, 1053 and 997 cm− 1 (attributed …
at 600° C and with 2 wt% sulfur content. Infrared studies allowed us to identify SO 3 species
by absorption bands at 1390 and 1027 cm− 1. Such a species was found to be very
sensitive to water giving rise with increasing water adsorption to IR bands first at 1368 and
1200 cm− 1 (assigned to adsorbed H 2 SO 4), then at 1320 and 1138 cm− 1 (attributed to
HSO 4-ions) and at last for H 2 O saturation at 1207, 1136, 1053 and 997 cm− 1 (attributed …
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