Efficient carbon-based acid catalysts for the propan-2-ol dehydration

Halogenated activated carbons (AC–Hal, Hal = F, Br and Cl) used as precursors were functionalized with SO3H groups to prepare (AC–Hal–S) solid acid catalysts. ACs obtained were subjected to chemical and elemental analysis, characterized by miscellaneous physicochemical techniques and were tested in the propan-2-ol dehydration. The high catalytic activity of AC–Hal–S (Hal = F, Cl) is attributed to the presence of F and Cl affect on the catalysts performance and stability at the operation conditions.

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► Halogenated activated carbons as precursors for solid acid catalysts.
► AC grafted with SO3H-groups as effective catalyst for propan-2-ol dehydration.
► F-containing AC catalysts are high active and stable over time.
► Surface CF3-groups stabilize AC acid catalysts and improve their activity.