Abstract
A series of γ‐Al2O3‐supported SO 2−4 /ZrO2 superacid catalysts (named SZ/Al2O3) were prepared by a precipitation method and their catalytic behavior for n‐butane isomerization at low temperature in the absence of H2 and at high temperature in the presence of H2 was studied in this paper. The catalytic activities of some of these catalysts were enhanced significantly at both low and high temperatures. At 250°C after 6 h on stream, the steady activity of the most active sample, 60%SZ/Al2O3, is about two times higher than that of conventional SZ. The texture properties of catalysts were studied by the methods of XRD and the adsorption of N2. Experimental evidence of IR of adsorbed pyridine indicates that the significant activity enhancements of SZ/Al2O3 catalysts are caused by the increasing of the amount of strong acid sites.
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Lei, T., Xu, J., Hua, W. et al. High‐activity catalyst of SO 2−4 /ZrO2 supported on γ‐Al2O3 for n‐butane isomerization. Catalysis Letters 61, 213–218 (1999). https://doi.org/10.1023/A:1019057929918
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DOI: https://doi.org/10.1023/A:1019057929918