F. Garin et al., A SKELETAL REARRANGEMENT STUDY OF LABELED BUTANES ON A SOLID SUPERACID CATALYST - SULFURIC-ACID TREATED ZIRCONIUM-OXIDE, Journal of catalysis, 151(1), 1995, pp. 26-32
The reactions of n-butane and isobutane have been studied in a flow sy
stem in the presence of hydrogen at 250 degrees C using sulfuric acid
treated zirconia as catalyst. The conversion of the butanes occurs wit
h high selectivity in isomerization. The branched isomer reacts much f
aster than the linear one. The use of C-13 labelled starting material
and analysis of the isotope distribution in the products show that the
rearrangement is of intramolecular nature in accord with the superaci
dic properties of the catalyst. (C) 1995 Academic Press, Inc.