Method for separating and recovering lignin derivatives

Details Method for separating and recovering lignin derivatives Method for separating and recovering lignin derivatives

C - Chemistry, Metallurgy

07

G

C07G 1/00 (2011.01) C08H 7/00 (2011.01) B01J 20/06 (2006.01)

Patent

CA 2611437

Disclosed is a technique for separation/collection of a lignin derivative which is useful for the separation of a lignin derivative having a 1, 1- diphenylpropane unit and/or a unit derived from the 1, 1-diphenylpropane unit from a mixture system containing the lignin derivative. A lignin derivative having a 1, 1-diphenylpropane unit and/or a unit derived from the 1, 1- dipheylpropane unit is allowed to contact with a metal oxide in a liquid medium, thereby separating the lignin derivative in the form retained on the metal oxide.

La présente invention a pour objet une technique de séparation/collecte d'un dérivé de lignine pouvant être employée pour séparer un dérivé de lignine comportant un motif 1,1-diphénylpropane et/ou un motif dérivé du motif 1,1-diphénylpropane d'un système mélangé contenant ledit dérivé de lignine. Un dérivé de lignine comportant un motif 1,1-diphénylpropane et/ou un motif dérivé du motif 1,1-diphénylpropane est mis en contact avec un oxyde métallique dans un milieu liquide, ce qui permet de séparer le dérivé de lignine sous sa forme associée à l'oxyde métallique.

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