Room-temperature ionic liquids that dissolve carbohydrates in high concentrations

Liu, Qingbin; Janssen, Michiel H. A.; Rantwijk, Fred van; Sheldon, Roger A.

doi:10.1039/b412848f

Cited by 356 publications

(257 citation statements)

References 11 publications

(20 reference statements)

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“…Ionic liquids have been hailed as the green alternative to conventional volatile organic solvents (VOSs) in chemistry due to their novel properties, while maintaining the ability to dissolve a wide range of organic and inorganic compounds. Ionic liquids are capable of dissolving complex macromolecules and polymeric materials such as lignocellulose with high efficiency (Liu, et al, 2005;Xie, et al, 2005). Recently, ionic liquids that being considered as green solvents have been successfully used to dissolve and process lignocellulosic materials without derivatization (Wu, et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Shamsuri¹,

Abdullah²

2010

MAS

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In this study, lignin was isolated from rubber wood by means of ionic liquid (1,3-dimethylimidazolium methylsulfate). The optimum parameters to isolate lignin were investigated which include the concentrations of ionic liquid (0.1, 0.2, 0.3, 0.4, 0.5 moles), isolation durations (30, 60, 90, 120, 150 minutes), and isolation temperatures (25, 40, 60, 80, 100°C). The optimum parameters for lignin isolation are 0.5 moles concentration, 120 minutes and 100ºC. Lignin could be isolated from rubber wood up to 13.03wt.% by ionic liquid however, in comparison with acid and alkaline isolation, they give better yields than ionic liquid which 22.15wt.% and 18.56wt.% of lignin, respectively. Lignin preliminary structures isolated by ionic liquid have been confirmed based on Fourier transform infrared (FTIR) results. From these results, isolated lignin by ionic liquid provides lignin without other related isolative. Apart from that, ionic liquid also could be recycled up to three times compared to acid and alkaline isolation methods.

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Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Shamsuri¹,

Abdullah²

2010

MAS

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“…The results indicate that the final production is affected by the type of fatty acids used. Even though BMIM BF4 is a hydrophilic ionic liquid, the solubility of glucose has been shown to be very low [19]. Likewise, our calculated solubility of ascorbic acid was also low.…”

Section: Fig (5)mentioning

confidence: 73%

System Development from Organic Solvents to Ionic Liquids for Synthesiz-ing Ascorbyl Esters with Conjugated Linoleic Acids

Yang¹,

Schultz²,

Guo³

et al. 2012

TOBIOTJ

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Abstract:The aim of this paper is to screen suitable reaction systems for the modification of antioxidants through enzymatic synthesis. Enzymatic esterification of ascorbic acid with conjugated linoleic acid (CLA) was investigated as a model. Four organic solvents and five different enzymes were evaluated. Results show that only Novozym ® 435 turned out to be a useful enzymatic preparation for the production of ascorbyl-CLA ester. The optimum reaction conditions in the organic solvent system were 4 h at 55°C and at a molar ratio of 5 (CLA/ascorbic acid). The esterification reaction was transferred to an ionic liquid system for the purpose of improving solubility of the polar substrate and avoiding the application of organic solvents. From screening experiments, it was evident that only methyltrioctylammonium triflouroacetate (tO-MA·TFA) could provide a proper reaction environment for production of ascorbyl-CLA ester when using Novozym® 435 as biocatalyst. It was possible to significantly increase the productivity (150 g/l) through the increase of ascorbic acid solubility in ionic liquids by super saturation together with the increase of reaction temperature to 70°C, far beyond than that in organic solvents (35 g/l) after preliminary optimizations for both systems.

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“…Ionic liquids and different types of surfactans base inhibitors are well known to have a high activity in acid medium [42,43] and therefore are used in an oil field to minimize carbon-dioxide-induced corrosion [44,45]. Among many kinds of functionalized ionic liquids ether-functionalized ILs have been investigated intensively, and ether groups have been successfully introduced in to imidazolium cations [46][47][48][49][50][51][52].…”

Section: International Journal Of Corrosionmentioning

confidence: 99%

Inhibition Effect of 1-Butyl-4-Methylpyridinium Tetrafluoroborate on the Corrosion of Copper in Phosphate Solutions

Scendo¹,

Uznanska²

2011

International Journal of Corrosion

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The influence of the concentration of 1-Butyl-4-methylpyridinium tetrafluoroborate (4MBPBF 4 ) as ionic liquid (IL) on the corrosion of copper in 0.5 M PO 3− 4 solutions of pH 2 and 4 was studied. The research involved electrochemical polarization method, and scanning electron microscopy (SEM) technique. The results obtained showed that the inhibition efficiency of corrosion of copper increases with an increase in the concentration of 4MBPBF 4 but decreases with increasing temperature. The thermodynamic functions of corrosion analysis and adsorptive behavior of 4MBPBF 4 were carried out. During the test, the adsorption of the inhibitor on the copper surface in the phosphate solutions was found to obey the Langmuir adsorption isotherm and had a physical mechanism.

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Room-temperature ionic liquids that dissolve carbohydrates in high concentrations

Cited by 356 publications

References 11 publications

Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

System Development from Organic Solvents to Ionic Liquids for Synthesiz-ing Ascorbyl Esters with Conjugated Linoleic Acids

Inhibition Effect of 1-Butyl-4-Methylpyridinium Tetrafluoroborate on the Corrosion of Copper in Phosphate Solutions

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