Solvents For Use In The Treatment Of Lignin-Containing Materials
First Claim
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1. A method for the treatment of a lignin-containing material comprising contacting the lignin-containing material with an ionic liquid to extract the lignin into the ionic liquid.
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Abstract
A method for the treatment of a lignin-containing material such as wood pulp, bagasse and other plant-derived materials, comprising contacting the lignin-containing material with an ionic liquid to extract the lignin therefrom. The ionic liquid is suitably a substituted or unsubstituted imidazolium, triazolium, pyrazolium, pyridinium, pyrrolidinium, piperidinium, ammonium, phosphonium or sulfonium salt of a substituted or unsubstituted aryl sulfonate, such as an ionic liquid salt of a xylene sulfonate.
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Citations
57 Claims
- 1. A method for the treatment of a lignin-containing material comprising contacting the lignin-containing material with an ionic liquid to extract the lignin into the ionic liquid.
- 35. A method of using an ionic liquid in the treatment of a lignocellulosic material to extract lignin into the ionic liquid and preserve the cellulosic fibre comprising the step of contacting the ionic liquid with the lignocellulosic material.
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45. An ionic liquid comprising
an substituted or unsubstituted aryl organic acid anion; - and
an ionic liquid-forming inorganic cation or an organic cation. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 56, 57)
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- 53. An ionic liquid comprising a substituted or unsubstituted imidazolium, triazolium, pyrazolium, pyridinium, pyrrolidinium, piperidinium, ammonium, phosphonium or sulfonium salt of a substituted or unsubstituted aryl sulfonate.
Specification