- 专利标题： PROCESS FOR THE SIMULTANEOUS EXTRACTION OF LIGNIN AND SILICA FROM BIOMASS AND ELASTOMER REINFORCED WITH A MIXTURE OF LIGNIN AND SILICA
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申请号： EP17159836.0申请日： 2017-03-08
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公开(公告)号： EP3372646A1公开(公告)日： 2018-09-12
- 发明人: BENJELLOUN MLAYAH, Bouchra , DELMAS, Michel , CACHET, Nadja
- 申请人： Compagnie Industrielle De La Matiere Vegetale CIMV
- 申请人地址： 11 - 11bis rue Louis Philippe 92200 Neuilly sur Seine FR
- 专利权人： Compagnie Industrielle De La Matiere Vegetale CIMV
- 当前专利权人： Compagnie Industrielle De La Matiere Vegetale CIMV
- 当前专利权人地址： 11 - 11bis rue Louis Philippe 92200 Neuilly sur Seine FR
- 代理机构： Gevers & Orès
- 主分类号： C08L97/02
- IPC分类号： C08L97/02 ; C08L1/02
摘要：
The invention relates to a process for the simultaneous extraction of lignin and silica from lignocellulosic plant material, characterized in that it comprises the steps of:
a) fractionating the lignocellulosic plant material in the presence of an acid solution, so as to obtain a solid fraction comprising cellulose, residual lignin and silica;
b) extracting simultaneously lignin and silica from the solid fraction obtained in step a) with a basic solution, at a pH between 10 and 13 and at a temperature between 70°C and 90°C, so as to obtain a liquid phase comprising lignin and silica, and a solid phase;
c) separating the liquid phase and of the solid phase obtained in step b),
d) coprecipitating a mixture of lignin and silica comprised in the liquid phase, at a pH between 5 and 6.
a) fractionating the lignocellulosic plant material in the presence of an acid solution, so as to obtain a solid fraction comprising cellulose, residual lignin and silica;
b) extracting simultaneously lignin and silica from the solid fraction obtained in step a) with a basic solution, at a pH between 10 and 13 and at a temperature between 70°C and 90°C, so as to obtain a liquid phase comprising lignin and silica, and a solid phase;
c) separating the liquid phase and of the solid phase obtained in step b),
d) coprecipitating a mixture of lignin and silica comprised in the liquid phase, at a pH between 5 and 6.
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