A stable and highly selective metalloporphyrin based framework for the catalytic oxidation of cyclohexene. Issue 32 (3rd August 2020)

• Record Type: Journal Article
• Authors: Xia, Zhinan; Li, Fengyan; Xu, Lin; Feng, Pingyun
• Is Part Of: Dalton transactions. Volume 49:Issue 32(2020)
• Page Start: 11157
• Page End: 11162
• Publication Date: 2020-08-03
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt01420f
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The first 3D molybdenum-porphyrin framework was synthesized and structurally characterized, showing perfect catalytic activity in the oxidation of cyclohexene. Abstract : A new metalloporphyrin framework of molybdenum Mo2 O4 (C48 H28 N4 O8 )·(CH3 )2 NH·5H2 O·2DMF (Mo2 TCPP) was synthesized from tetrakis(4-carboxyphenyl)porphyrin (H4 TCPP) and sodium molybdate dihydrate by a hydrothermal method. Mo2 TCPP is a 3D network with two sub-units, in which both TCPP ligands and each Mo2 dimer act as four connection nodes. The crystal structure was determined by single crystal analysis and further characterized by FTIR, SEM, EDX, PXRD, XPS and TGA. Here cumene hydrogen peroxide and hydrogen peroxide were used as oxidants to study the catalytic activity of new metalloporphyrins in the oxidation of cyclohexene at different temperatures. The conversion rate of cyclohexene and the selectivity of epoxycyclohexane were both higher than 99%, which was better than the previously published research results. The stability of the catalyst before and after the reaction was further tested for 10 runs without obvious degradation. The catalyst was stable in different solutions such as acidic, water and alkaline. These results shed light on the future development of new catalytic materials based on metalloporphyrin.