Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

OP-2-1COMBINATION OF METAL AND ACID CATALYSIS FOR THECONVERSION OF CARBOHYDRATE BIOMASS INTO CHEMICALSClaudia Antonetti, Anna Maria Raspolli Galletti, Valentina De Luise,Marco MartinelliDepartment of Chemistry and Industrial Chemistry, University of Pisa,Via Risorgimento 35, 56126, Pisa, Italy, claudia.antonetti@ns.dcci.unipi.itMetal and acid catalyses play a strategic role in the catalytic conversion ofbiomass into chemicals because of the growing interest in using bio-renewablefeedstocks as source of bio-fuels as well as of chemicals and fine chemicals [1].Biomass provides security of supply and economical advantage, in particular wheninexpensive or, indeed, waste or residue raw materials are employed as startingmaterials. In this context, the acid hydrothermal conversion of renewable resourcesto 5-hydroxymethyl-2-furaldehyde (HMF) or directly to levulinic acid (LA) has beenstudied [2] and patented [3]. The direct conversion of the carbohydrate raw biomassto LA results preferable employing homogeneous acid catalysts in water and theyield of LA can be enhanced by the proper selection of the main reaction parameters,in particular reaction time and acid type and concentration. LA can be successivelyhydrogenated to γ-valerolactone (GVL) which is not only a sustainable liquid but alsoa precursor for biomass-derived acrylic monomers and a valuable fuel additive [4]."one pot"[acid cat.]H 2 [metal cat.]biomassH +H 2 OOOHH 2 [metal cat]OOLAOGVLThe bi-functional (acid and hydrogenating) performances of Ru, Pd and Pt basedheterogeneous catalysts and the optimization of the reactions conditions have beenstudied. In fact, the aim of this research is the development of the inexpensiveproduction of GVL directly from renewable biomass with an «one pot process». Inthis perspective the employment of heterogeneous catalytic systems as well as ofmild reaction conditions represents a challenging target.[1]. A. Corma, S. Iborra, A. Velty, Chem. Rev. 2007, 107, 2411-2502.[2]. C. Carlini, P. Patrono, A.M. Raspolli Galletti, G. Sbrana, Appl. Catal, A 2004, 275, 111-118.[3]. A.M. Raspolli Galletti, A. Troiano, S. Fugalli, It. Pat. Appl. CE2008 A 000002 2008.[4]. I.T. Horváth, H. Mehdi, V. Fabos, L. Boda, L.T. Mika, Green Chem. 2008, 10, 238-242.42