Aerobic Oxidation of Hydroxymethylfurfural and Furfural by Using Heterogeneous CoxOy–N@C Catalysts. Issue 12 (29th October 2014)

• Record Type: Journal Article
• Authors: Deng, Jin; Song, Hai‐Jie; Cui, Min‐Shu; Du, Yi‐Ping; Fu, Yao
• Is Part Of: ChemSusChem. Volume 7:Issue 12(2014:Dec.)
• Page Start: 3334
• Page End: 3340
• Publication Date: 2014-10-29
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201402843
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>2, 5‐Furandicarboxylic acid (FDCA) is considered to be a promising replacement for terephthalic acid since they share similar structures and properties. In contrast to FDCA, 2, 5‐furandicarboxylic acid methyl (FDCAM) has properties that allow it to be easily purified. In this work, we reported an oxidative esterification of 5‐hydroxymethylfurfural (HMF) and furfural to prepare corresponding esters over Co_{<italic>x</italic>}O_{<italic>y</italic>}–N@C catalysts using O₂ as benign oxidant. High yield and selectivity of FDCAM and methyl 2‐furoate were obtained under optimized conditions. Factors which influenced the product distribution were examined thoroughly. The Co_{<italic>x</italic>}O_{<italic>y</italic>}–N@C catalysts were recycled five times and no significant loss of activity was detected. Characterization of the catalysts could explain such phenomena. Using XPS and TGA, we made a thorough investigation of the effects of ligand and pyrolysis temperature on catalyst activity.</p> </abstract>