A new functionalized ionic liquid for efficient glucose conversion to 5-hydroxymethyl furfural and levulinic acid

Ramli, Nur Aainaa Syahirah; Amin, Nor Aishah Saidina

doi:10.1016/j.molcata.2015.06.030

Cited by 65 publications

(29 citation statements)

References 81 publications

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“…N.A.S. Ramli and co-workers synthesized LA using functionalized ionic liquid catalyst that had Bronsted and Lewis acidity and reported an 18% yield of the LA with a high amount (10 g) of catalyst loading [ 47 ], whereas W. Wei and co-workers used a combined mineral (H 3 PO 4 ) and Lewis acid (CrCl 3 ) catalyst for the glucose conversion to LA. This study reported a 54% yield of the LA at 170 °C and 4 h reaction time [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Catalytic Conversion of Glucose into Levulinic Acid Using 2-Phenyl-2-Imidazoline Based Ionic Liquid Catalyst

Kumar

2021

Molecules

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Levulinic acid (LA) is an industrially important product that can be catalytically valorized into important value-added chemicals. In this study, hydrothermal conversion of glucose into levulinic acid was attempted using Brønsted acidic ionic liquid catalyst synthesized using 2-phenyl-2-imidazoline, and 2-phenyl-2-imidazoline-based ionic liquid catalyst used in this study was synthesized in the laboratory using different anions (NO3, H2PO4, and Cl) and characterized using 1H NMR, TGA, and FT-IR spectroscopic techniques. The activity trend of the Brønsted acidic ionic liquid catalysts synthesized in the laboratory was found in the following order: [C4SO3HPhim][Cl] > [C4SO3HPhim][NO3] > [C4SO3HPhim][H2PO4]. A maximum 63% yield of the levulinic acid was obtained with 98% glucose conversion at 180 °C and 3 h reaction time using [C4SO3HPhim][Cl] ionic liquid catalyst. The effect of different reaction conditions such as reaction time, temperature, ionic liquid catalyst structures, catalyst amount, and solvents on the LA yield were investigated. Reusability of [C4SO3HPhim][Cl] catalyst up to four cycles was observed. This study demonstrates the potential of the 2-phenyl-2-imidazoline-based ionic liquid for the conversion of glucose into the important platform chemical levulinic acid.

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Section: Resultsmentioning

confidence: 99%

Catalytic Conversion of Glucose into Levulinic Acid Using 2-Phenyl-2-Imidazoline Based Ionic Liquid Catalyst

Kumar

2021

Molecules

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“…因此, 结构中同时包含亲水与疏水基团的离子液体, 会具有更高的催化活性 [24] . Han 等 [27] 利用含苯磺酸根阴离子的离子液体为溶剂, 考察了葡萄糖在 [29][30][31] . 如 Amin 等 [29,30] [32][33][34] .…”

Section: 纤维素衍生物在离子液体中的转化unclassified

Selective conversion of biomass catalyzed by ionic liquids

Liu¹,

Lü²,

Huang³

et al. 2021

Sci. Sin.-Chim

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“…However, above 2 wt % catalyst loading, LA yield was found to be decreased. At higher catalyst loading, the presence of more acidic sites leads to the condensation and hydrolysis which is the favorable condition for the humins formation and lowering of LA formation [6,21]. At the higher catalyst loading of 2.5 wt%, there is also poor external diffusion of reactants/solvents in the catalyst pores which reduces the desired activity.…”

Section: Influence Of Catalyst Loadingmentioning

confidence: 99%

Highly active Brønsted acidic silicon phosphate catalyst for direct conversion of glucose to levulinic acid in MIBK–water biphasic system

Bokade

Moondra²,

Niphadkar

2019

SN Appl. Sci.

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Due to depletion of fossil fuel reserves and environmental concerns demand the utilization of other renewable feedstocks such as biomass which is available abundantly in different quantities throughout the world. Catalytic transformation of this biomass or biomass-derived products such as glucose to valuable platform biochemicals viz: levulinic acid (LA) is academically as well as industrially important reaction. In the present work, Silicon phosphates (SixPO 4) catalysts viz: Si10PO 4 , Si20PO 4 , Si30PO 4 , and Si40PO 4 having solely Brønsted acidic properties were prepared by wet impregnation of H 3 PO 4 (10-40 wt%) on fumed silica followed by calcination at 550 °C for 10 h. The prepared catalysts were characterized by various techniques such as XRD; NH 3-TPD; FTIR etc. Formation of silicon phosphate structure was found to depend on % of P loading and its interaction with silica. The acidic property of SixPO 4 catalyst was characterized by NH 3-TPD and Pyridine-IR, confirmed that catalyst has exclusively strong Brønsted acidity. A high LA yield of 81 mol% over Si30PO 4 has achieved at an optimized reaction condition of 140 °C; 10 h in MIBK-water (9:1) biphasic system.

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A new functionalized ionic liquid for efficient glucose conversion to 5-hydroxymethyl furfural and levulinic acid

Cited by 65 publications

References 81 publications

Catalytic Conversion of Glucose into Levulinic Acid Using 2-Phenyl-2-Imidazoline Based Ionic Liquid Catalyst

Catalytic Conversion of Glucose into Levulinic Acid Using 2-Phenyl-2-Imidazoline Based Ionic Liquid Catalyst

Selective conversion of biomass catalyzed by ionic liquids

Highly active Brønsted acidic silicon phosphate catalyst for direct conversion of glucose to levulinic acid in MIBK–water biphasic system

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