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Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates

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dc.contributor.author Mdletshe, Lindokuhle S
dc.contributor.author Makgwane, Peter R
dc.contributor.author Ray, Suprakas S
dc.date.accessioned 2019-10-04T07:14:09Z
dc.date.available 2019-10-04T07:14:09Z
dc.date.issued 2019-08
dc.identifier.citation Mdletshe, L.S., Makgwane, P.R. and Ray, S.S. 2019. Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates. Nanomaterials, v9(8), 17pp en_US
dc.identifier.issn 2079-4991
dc.identifier.uri https://www.ncbi.nlm.nih.gov/pubmed/31395824
dc.identifier.uri https://doi.org/10.3390/nano9081140
dc.identifier.uri http://hdl.handle.net/10204/11150
dc.description © 2019 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. en_US
dc.description.abstract This study report on the synthesis of spinel CuFe2O4 nanostructures by surfactant-assisted method. The catalysts were characterized by X-ray diffraction (XRD), laser Raman, transition electron microscope (TEM), scanning electron microscope (SEM), energy dispersive X-ray (EDX), hydrogen temperature programmed reduction (H2-TPR), and Brunauer-Teller-Emmett-Teller (BET) surface area techniques. CuFe2O4 was active for pinene oxidation using tertiary butyl hydroperoxide (TBHP) to pinene oxide, verbenol, and verbenone aroma oxygenates. Under optimized reaction conditions, the spinel CuFe2O4 catalyst could afford 80% pinene conversion at a combined verbenol/verbenone selectivity of 76% within the reaction time of 20 h. The changes in catalyst synthesis solvent composition ratios induced significantly varying redox, phases, and textural structure features, which resulted in various catalytic enhancement effect. Characterization results showed the spinel CuFe2O4 catalyst possessing less than 5 wt% impurity phases, Cu(OH)2, and CuO to afford the best catalytic performance. The CuFe2O4 catalyst was recyclable to up to five reaction cycles without loss of its activity. The recyclability of the bimetal CuFe2O4 oxide catalyst was simply rendered by use of an external magnet to separate it from the liquid solution. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Worklist;22679
dc.subject Biomass en_US
dc.subject Copper oxide en_US
dc.subject Iron oxide en_US
dc.subject Nanoparticles en_US
dc.subject Pinene en_US
dc.subject Selective oxidation en_US
dc.title Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates en_US
dc.type Article en_US
dc.identifier.apacitation Mdletshe, L. S., Makgwane, P. R., & Ray, S. S. (2019). Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates. http://hdl.handle.net/10204/11150 en_ZA
dc.identifier.chicagocitation Mdletshe, Lindokuhle S, Peter R Makgwane, and Suprakas S Ray "Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates." (2019) http://hdl.handle.net/10204/11150 en_ZA
dc.identifier.vancouvercitation Mdletshe LS, Makgwane PR, Ray SS. Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates. 2019; http://hdl.handle.net/10204/11150. en_ZA
dc.identifier.ris TY - Article AU - Mdletshe, Lindokuhle S AU - Makgwane, Peter R AU - Ray, Suprakas S AB - This study report on the synthesis of spinel CuFe2O4 nanostructures by surfactant-assisted method. The catalysts were characterized by X-ray diffraction (XRD), laser Raman, transition electron microscope (TEM), scanning electron microscope (SEM), energy dispersive X-ray (EDX), hydrogen temperature programmed reduction (H2-TPR), and Brunauer-Teller-Emmett-Teller (BET) surface area techniques. CuFe2O4 was active for pinene oxidation using tertiary butyl hydroperoxide (TBHP) to pinene oxide, verbenol, and verbenone aroma oxygenates. Under optimized reaction conditions, the spinel CuFe2O4 catalyst could afford 80% pinene conversion at a combined verbenol/verbenone selectivity of 76% within the reaction time of 20 h. The changes in catalyst synthesis solvent composition ratios induced significantly varying redox, phases, and textural structure features, which resulted in various catalytic enhancement effect. Characterization results showed the spinel CuFe2O4 catalyst possessing less than 5 wt% impurity phases, Cu(OH)2, and CuO to afford the best catalytic performance. The CuFe2O4 catalyst was recyclable to up to five reaction cycles without loss of its activity. The recyclability of the bimetal CuFe2O4 oxide catalyst was simply rendered by use of an external magnet to separate it from the liquid solution. DA - 2019-08 DB - ResearchSpace DP - CSIR KW - Biomass KW - Copper oxide KW - Iron oxide KW - Nanoparticles KW - Pinene KW - Selective oxidation LK - https://researchspace.csir.co.za PY - 2019 SM - 2079-4991 T1 - Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates TI - Fabrication of bimetal CuFe2O4 oxide redox-active nanocatalyst for oxidation of pinene to renewable aroma oxygenates UR - http://hdl.handle.net/10204/11150 ER - en_ZA


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