(617ak) Double Bond Isomerization of 1-Butene Using Supported AlBr3 Catalysts
Here, we present the synthesis of supported AlBr3 catalysts using various supports like silica, alumina and mesoporous silicas (MCM-41, SBA-15), and its potential use for double bond isomerization of 1-butene. Although the complete isomerization was expected, results show that only double bond isomerization was observed even at 100 oC. This we believe could have been due to the formation of weak Brønsted acid sites instead of the expected, strong Brønsted acid sites. At 100 oC, pyridine DRIFTS qualitatively shows that there are far more Brønsted acid sites than Lewis acid sites. Loading of the active material (AlBr3), type of support, and strength of acid sites affected the conversion of 1-butene.
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