Evaluation of OxiOrganosolv pretreated hardwood and softwood lignocelluloses as substrates for the chemoenzymatic production of 5-hydroxymethylfurfural (HMF)

Table 3 HMF synthesis from sugars in the liquid product after dehydration with formic acid (reaction conditions: 150 °C, 60 min). All experiments were run in duplicates and numbers represent the mean values. The standard error deviation was ≤ 2.5% in all measurements

Hydrolysate	Organic solvent	Catalyst	Pretreatment conditions	Sugars conversion (wt.%)	HMF selectivity (wt.%)	g HMF/100 g pretreated biomass
Lignocel
Lign_iBuOH_1	iBuOH	No catalyst	150 °C, 120 min	82.4	49.0	8.3
Lign_iBuOH_2	iBuOH	No catalyst	160 °C, 120 min	75.9	47.8	13.0
Lign_iBuOH_3	iBuOH	No catalyst	175 °C, 120 min	71.7	39.3	14.1
Lign_THF	THF	No catalyst	150 °C, 60 min	74.7	38.9	8.7
Lign_EtOH_HPMo	EtOH	HPMo	150 °C, 60 min	81.2	32.4	5.9
Lign_iBuOH_HPMo	iBuOH	HPMo	150 °C, 60 min	84.1	33.3	5.8
Lign_ACO_FePMo	ACO	Fe-PMo	150 °C, 60 min	92.9	13.1	3.1
Lign_EtOH_CuPMo	EtOH	Cu-PMo	150 °C, 60 min	78.6	36.1	5.8
Lign_iBuOH_CuPMo	iBuOH	Cu-PMo	150 °C, 60 min	75.3	45.9	8.4
Pine
Pine_EtOH	EtOH	No catalyst	175 °C, 120 min	77.6	49.9	9.2
Pine_ACO	ACO	No catalyst	175 °C, 120 min	60.3	43.5	5.0
Pine_iBuOH_1	iBuOH	No catalyst	175 °C, 60 min	73.7	39.5	9.9
Pine_iBuOH_2	iBuOH	No catalyst	175 °C, 120 min	74.1	40.8	11.3

ISSN: 2948-2356