Selectivity-tunable oxidation of tetrahydro-β-carboline over an OMS-2 composite catalyst: preparation and catalytic performance

A H₃PO₄·12WO₃/OMS-2 nanocomposite catalyst doped with sodium phosphowolframate was prepared with MnSO₄·H₂O as Mn²⁺ precursor and remarkably enhanced catalytic activity and selectivity in aerobic oxidative dehydrogenation of tetrahydro-β-carboline.