Cobalt immobilized on hydroxyapatite as a low-cost and highly effective heterogeneous catalyst for alkenes epoxidation under mild conditions. Issue 65 (7th November 2018)

• Record Type: Journal Article
• Authors: Mekrattanachai, Pagasukon; Cao, Changyan; Li, Zhaohua; Li, Huining; Song, Weiguo
• Is Part Of: RSC advances. Volume 8:Issue 65(2018)
• Page Start: 37303
• Page End: 37306
• Publication Date: 2018-11-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra07168c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Transition metal Co immobilized on hydroxyapatite even with low loading of 0.05 wt% is a low-cost and highly effective heterogeneous catalyst for alkenes epoxidation at 30 °C with O2 and iso-butyraldehyde as co-oxidant. Abstract : Transition metal Co immobilized on hydroxyapatite with a loading of 0.05 wt% (denoted 0.05 wt% Co/HAP) could catalyze partial oxidation of cyclic alkenes, aromatic alkenes and aliphatic alkenes to yield epoxide products with excellent selectivity at 30 °C with O2 and iso-butyraldehyde as co-oxidant. The TOF value was as high as 6261 h −1 for epoxidation of cyclohexene. In addition, the prepared 0.05 wt% Co/HAP catalyst can be re-used at least 6 times without significant loss of catalytic activity and selectivity.