首页|Highly selective hydrogenation of 5-hydroxy me thy lfurfural to 2,5-bis(hydroxymethyl)furan over metal-oxide supported Pt catalysts:The role of basic sites
Highly selective hydrogenation of 5-hydroxy me thy lfurfural to 2,5-bis(hydroxymethyl)furan over metal-oxide supported Pt catalysts:The role of basic sites
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Catalytic hydrogenation of 5-hydroxymethylfurfural(HMF)to 2,5-bis(hydroxymethyl)furan(BHMF)is an important reaction for biomass valorization.We report that metal oxides(including MgO,ZnO,SiO2 and TiO2)supported Pt catalysts show vastly different BHMF selectivity towards the hydrogenation of HMF.The basic metal oxide MgO supported Pt catalyst affords 99 % selectivity of BHMF,while the typical acidic metal oxide TiO2 supported Pt catalyst displays only 28 % selectivity of BHMF.HMF chemisorption on these catalysts show that the basic sites of metal oxide bonding to the C=0 group of HMF promote the BHMF selectivity,while the acidic sites of metal oxide favor the adsorption of C=C group of HMF,which decreases the BHMF selectivity.It is proposed that the cooperation between basic sites and Pt atoms(activating H2)boosted the BHMF selectivity.Comprehensive studies including reactivity,recyclability,stability,solvent effect on the Pt/MgO catalyst were also carried out.
Metal oxideBasicityAcidity5-hydroxymethylfurfuralHydrogenation
Jian Wang、Jiarui Zhao、Junhong Fu
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College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang,Liaoning 110142,China
Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China
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