Catalytic results of Co/ZrO₂ for hydrogenation of EL in different solvents^a.

Entry	Solvent	EL conv. (%)	GVL yield (%)	Co leachingb (%)
1	Water	97.4	91.8	28.4
2	Methanol	97.3	58.7	0.8
3	Ethanol	>99.5	84.9	0.8
4	2-Propanol	63.2	53.1	0.4
5	1-Propanol	>99.5	84.9	0.2
6	1-Butanol	>99.5	86.7	0.6
7	1-Pentanol	78.7	64.2	0.5
8	Cyclohexane	>99.5	80.0	DNT
9	Benzene	1.0	0.8	DNT
10	1,4-Dioxane	>99.5	83.5	0.46

^aReaction conditions: 17.4 mmol EL, 15 mL solvent, 190 °C, 4 MPa H₂, 2 h and 0.1 g Co/ZrO₂.

^bDetermined by ICP.