Abstract
Chemical and catalytic properties of Al 2O 3SbF 5 system has been studied. It was found that alumina upon SbF 5 adsorption became solid superacid of Brønsted nature, able to catalyze n-pentane low temperature isomerization. The following structure of superacid active center has been postulated: [AlOSbF 5] −]H +. The stability of this catalyst was evaluated using time-on-stream theory of catalysts decay and then compared with other Brønsted (Al 2O 3BF 3) and Lewis (Al 2O 3AlCl 3) superacid systems. It was found that Brønsted superacid centers are more stable than Lewis ones.
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