Process for separating lignin from lignocellulosic materials

Noelia Blanco Perez; Leire Lorenzo Ibarreta; Jose Ramón Ochoa Gomez

Process for separating lignin from lignocellulosic materials

Noelia Blanco Perez (Inventor)
, Leire Lorenzo Ibarreta (Inventor)
, Jose Ramón Ochoa Gomez (Inventor)

Research output: Patent

Abstract

The present invention provides a process for separating lignin from a lignocellulosic material in order to obtain cellulose free or substantially free of lignin, the process comprising the steps of (a) preparing a CO 2 -triggered switchable solvent by mixing water, a water-insoluble amine which is a secondary amine, a tertiary amine, or a combination thereof, and CO 2 ; (b) mixing the lignocellulosic material with the CO 2 -triggered switchable solvent obtained in step (a), thereby the lignin is dissolved in the solvent and the cellulose is not dissolved; and (c) separating the cellulose.

Original language	English
Patent number	EP3421662 (A1)
IPC	C07G1/00\|\|C08H1/00\|\|D21C11/00\|\|D21C3/20
Priority date	30/06/17
Publication status	Published - 30 Jun 2017

Cite this

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title = "Process for separating lignin from lignocellulosic materials",

abstract = "The present invention provides a process for separating lignin from a lignocellulosic material in order to obtain cellulose free or substantially free of lignin, the process comprising the steps of (a) preparing a CO 2 -triggered switchable solvent by mixing water, a water-insoluble amine which is a secondary amine, a tertiary amine, or a combination thereof, and CO 2 ; (b) mixing the lignocellulosic material with the CO 2 -triggered switchable solvent obtained in step (a), thereby the lignin is dissolved in the solvent and the cellulose is not dissolved; and (c) separating the cellulose.",

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note = "EP3421662 (A1) EP3645786 (B1) ES2894609 (T3) WO2019002553 (A1); EP3421662 (A1); C07G1/00||C08H1/00||D21C11/00||D21C3/20",

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TY - PAT

T1 - Process for separating lignin from lignocellulosic materials

AU - Blanco Perez, Noelia

AU - Lorenzo Ibarreta, Leire

AU - Ochoa Gomez, Jose Ramón

N1 - EP3421662 (A1) EP3645786 (B1) ES2894609 (T3) WO2019002553 (A1)

PY - 2017/6/30

Y1 - 2017/6/30

N2 - The present invention provides a process for separating lignin from a lignocellulosic material in order to obtain cellulose free or substantially free of lignin, the process comprising the steps of (a) preparing a CO 2 -triggered switchable solvent by mixing water, a water-insoluble amine which is a secondary amine, a tertiary amine, or a combination thereof, and CO 2 ; (b) mixing the lignocellulosic material with the CO 2 -triggered switchable solvent obtained in step (a), thereby the lignin is dissolved in the solvent and the cellulose is not dissolved; and (c) separating the cellulose.

AB - The present invention provides a process for separating lignin from a lignocellulosic material in order to obtain cellulose free or substantially free of lignin, the process comprising the steps of (a) preparing a CO 2 -triggered switchable solvent by mixing water, a water-insoluble amine which is a secondary amine, a tertiary amine, or a combination thereof, and CO 2 ; (b) mixing the lignocellulosic material with the CO 2 -triggered switchable solvent obtained in step (a), thereby the lignin is dissolved in the solvent and the cellulose is not dissolved; and (c) separating the cellulose.

UR - https://worldwide.espacenet.com/searchResults?submitted=true&locale=en_EP&DB=EPODOC&ST=advanced&TI=&AB=&PN=EP3421662+&AP=&PR=&PD=&PA=&IN=&CPC=&IC=

M3 - Patent

M1 - EP3421662 (A1)

ER -

Process for separating lignin from lignocellulosic materials

Abstract

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