Rice husk derived nanosilica supported Cu(ii) complex: an efficient heterogeneous catalyst for oxidation of alcohols using TBHP. Issue 115 (5th November 2015)

• Record Type: Journal Article
• Authors: Gogoi, Nibedita; Begum, Tahshina; Dutta, Smarika; Bora, Utpal; Gogoi, Pradip K.
• Is Part Of: RSC advances. Volume 5:Issue 115(2015)
• Page Start: 95344
• Page End: 95352
• Publication Date: 2015-11-05
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra21148d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We have developed a heterogenized catalyst of Cu(ii ) complex immobilized onto nanosilica obtained from rice husk (RH), through Schiff-base condensation between 3-aminopropyltriethoxysilane (APTES) functionalized nanosilica and acetamide. Abstract : We have developed a heterogenized catalyst of Cu(ii ) complex immobilized onto nanosilica obtained from rice husk (RH), through coordination of imine, generated via Schiff-base condensation between 3-aminopropyltriethoxysilane (APTES) functionalized nanosilica and acetamide. The synthesized catalysts were characterized by FT-IR, XRD, BET surface area measurements, ESR, SEM-EDX and ICP-AES. The synthesized catalyst showed excellent activity towards controlled oxidation of different primary and secondary alcohols in the presence of tert -butyl hydrogen peroxide (TBHP). Furthermore, the catalysts could be recovered by simple filtrations and can be reused upto many consecutive cycles without loss in activity.