Oxidation of cyclohexane to adipic acid catalyzed by Mn-doped titanosilicate with hollow structure
2015
Abstract One-step oxidation of cyclohexane to adipic acid (AA) was carried out at 413 K over manganese-doped titanium silicalite with hollow structure (HTS) using oxygen as oxidant without any initiator or solvent. The catalyst exhibited high conversion (13.4%) and reasonable product (AA) selectivity (57.5%). Hot-separation and catalyst-recycle tests proved that the catalyst acted as a heterogeneous one and it could be reused four times without losing its activity. The synthesized materials were characterized by N 2 adsorption–desorption isotherm, FT-IR, UV–vis and XPS techniques.
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