Reaction Kinetics and Catalysis Letters
Volume 25, Numbers 1-2, 143-145, DOI: 10.1007/BF02076556

Reaction of butane to isobutane catalyzed by the solid superacid of HfO2 treated with sulfate ion

K. Arata and M. Hino

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Abstract

The fourth solid superacid following Fe2O3, TiO2 and ZrO2 was synthesized by the addition of sulfate ion to HfO2. The catalyst, which was obtained by exposing Hf(OH)4, prepared by the hydrolysis of HfCl4, to 2N H2SO4 and then calcining in air at 600–800 °C, was active for the skeletal isomerization of butane to isobutane.
CHcyiecytcyvcyiecyrcytcyacyyacy tcyvcyiecyrcydcyacyyacy scyucypcyiecyrcykcyicyscylcyocytcyacy, scylcyiecydcyucyyucyshchcyacyyacy zcyacy scyucypcyiecyrcykcyicyscylcyocytcyacymcyicy Fe2O3, TiO2 icy ZrO2, bcyycylcyacy scyicyncytcyiecyzcyicyrcyocyvcyacyncyacy dcyocybcyacyvcylcyiecyncyicyiecymcy icyocyncyacy scyucylcysoftcyfcyacytcyacy kcy HfO2. Kcyacytcyacylcyicyzcyacytcyocyrcy, pcyocylcyucychcyiecyncyncyycyjcy ocybcyrcyacybcyocytcykcyocyjcy Hf(OH)4, pcyrcyicygcyocytcyocyvcylcyiecyncyncyocygcyocy gcyicydcyrcyocylcyicyzcyocymcy HfCl4, 2N H2SO4 scy dcyacylcysoftcyncyiecyjcyshcyicymcy ocybcyzhcyicygcyocymcy ncyacy vcyocyzcydcyucykhcyiecy pcyrcyicy 600–800 °C, ocykcyacyzcyacylcyscyyacy acykcytcyicyvcyncyycymcy vcy scykcyiecylcyiecytcyncyocyjcy icyzcyocymcyiecyrcyicyzcyacytscyicyicy bcyucytcyacyncyacy dcyocy icyzcyocybcyucytcyacyncyacy.

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