ACCEPTED MANUSCRIPT
[5] H. Heeres, R. Handana, D. Chunai, C. Borromeus Rasrendra, B. Girisuta, H. Jan Heeres, Combined
dehydration/(transfer)-hydrogenation of C6-sugars (D-glucose and D-fructose) to γ-valerolactone
using ruthenium catalysts, Green Chem., 11 (2009) 1247-1255.
[6] J.P. Lange, L. Petrus, R.J. Haan, A hydrogenation process for the conversion of a carboxylic acid or
an ester having a carbonyl group, in, Patent WO2007099111 A1; 2007.
[7] S.G. Wettstein, D.M. Alonso, Y. Chong, J.A. Dumesic, Production of levulinic acid and gamma-
valerolactone (GVL) from cellulose using GVL as a solvent in biphasic systems, Energy Environ. Sci., 5
(2012) 8199-8203.
[8] E.I. Gürbüz, D.M. Alonso, J.Q. Bond, J.A. Dumesic, Reactive Extraction of Levulinate Esters and
Conversion to γ-Valerolactone for Production of Liquid Fuels, ChemSusChem, 4 (2011) 357-361.
[9] N.J. Wise, J.M.J. Williams, Oxidation of alcohols by transfer hydrogenation: driving the
equilibrium with an intramolecular trap, Tetrahedron Lett., 48 (2007) 3639-3641.
[10] M. Chia, J.A. Dumesic, Liquid-phase catalytic transfer hydrogenation and cyclization of levulinic
acid and its esters to γ-valerolactone over metal oxide catalysts, Chem. Commun., 47 (2011) 12233-
12235.
[11] X. Tang, H. Chen, L. Hu, W. Hao, Y. Sun, X. Zeng, L. Lin, S. Liu, Conversion of biomass to γ-
valerolactone by catalytic transfer hydrogenation of ethyl levulinate over metal hydroxides, Appl.
Catal. B: Environ., 147 (2014) 827-834.
[12] L. Bui, H. Luo, W.R. Gunther, Y. Román-Leshkov, Domino Reaction Catalyzed by Zeolites with
Brønsted and Lewis Acid Sites for the Production of γ-Valerolactone from Furfural, Angew. Chem.
Int. Ed., 52 (2013) 8022-8025.
[13] H.Y. Luo, D.F. Consoli, W.R. Gunther, Y. Román-Leshkov, Investigation of the reaction kinetics of
isolated Lewis acid sites in Beta zeolites for the Meerwein–Ponndorf–Verley reduction of methyl
levulinate to γ-valerolactone, J. Catal., 320 (2014) 198-207.
[14] Z. Yang, Y.-B. Huang, Q.-X. Guo, Y. Fu, RANEY® Ni catalyzed transfer hydrogenation of levulinate
esters to [gamma]-valerolactone at room temperature, Chem. Commun., 49 (2013) 5328-5330.
[15] A.S. Amarasekara, M.A. Hasan, Pd/C catalyzed conversion of levulinic acid to γ-valerolactone
using alcohol as a hydrogen donor under microwave conditions, Catal. Commun., 60 (2015) 5-7.
[16] M.G. Al-Shaal, W.R.H. Wright, R. Palkovits, Exploring the ruthenium catalysed synthesis of
[gamma]-valerolactone in alcohols and utilisation of mild solvent-free reaction conditions, Green
Chem., 14 (2012) 1260-1263.
[17] M.G. Al-Shaal, P.J.C. Hausoul, R. Palkovits, Efficient, solvent-free hydrogenation of [small alpha]-
angelica lactone catalysed by Ru/C at atmospheric pressure and room temperature, Chem.
Commun., 50 (2014) 10206-10209.
[18] Q.-C. Xu, J.-D. Lin, J. Li, X.-Z. Fu, Y. Liang, D.-W. Liao, Microwave-assisted synthesis of MgO–CNTs
supported ruthenium catalysts for ammonia synthesis, Catal. Commun., 8 (2007) 1881-1885.
[19] I. Rossetti, N. Pernicone, L. Forni, Characterisation of Ru/C catalysts for ammonia synthesis by
oxygen chemisorption, Appl. Catal. A Gen., 248 (2003) 97-103.
[20] G. Peng, M. Steib, F. Gramm, C. Ludwig, F. Vogel, Synthesis factors affecting the catalytic
performance and stability of Ru/C catalysts for supercritical water gasification, Catal. Sci. Technol., 4
(2014) 3329-3339.
[ 1] A. uerrero- uiz, P. Badenes, . odr guez-Ramos, Study of some factors affecting the Ru and Pt
dispersions over high surface area graphite-supported catalysts, Appl. Catal. A Gen., 173 (1998) 313-
321.
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