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The deactivation of sulfated zirconia catalysts in the isomerization of n-butane has been studied using a combined TGA/FT-IR technique. Following deactivation at 200°C in the n-butane isomerization reaction, two SO 2 desorption maxima centered at 600°C and at 850°C were observed under a flow of N 2 . Coincidental with the low temperature desorption maximum of SO 2 centered...
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