Method for degrading lignin in seawater

Abstract

The invention discloses a method for degrading lignin in seawater. The method comprises the following steps: at the temperature of 150-500 DEG C, after the lignin is mixed with the seawater for reaction for no less than 0.5 h, separating to obtain the mixed product of phenolic compounds, wherein the total weight of the mixed product of the phenolic compounds accounts for more than 20% of the weight of the lignin in feeding materials. The method has the advantages of wide source of raw materials, simplicity in separation, high product yield and the like, and is suitable for preparing the phenolic compounds such as coniferyl alcohol, tonquinol, vanillic aldehyde, syringyl derivatives and the like by using biomass resources as raw materials.

Description

Technical field

[0001] The invention belongs to the field of energy, and specifically relates to a method for degrading lignin in seawater Background technique

[0002] With the reduction of underground carbon resources and the increasing difficulty of utilization, mankind needs to seek sustainable above-ground carbon resources in order to achieve sustainable development with zero carbon emissions off the surface. Lignin is the third organic carbon resource in the earth after cellulose and chitin. It is estimated that 150 billion tons of lignin can be produced from plant growth every year, and its utilization prospects are broad. The basic structural unit of lignin contains an aromatic ring structure. It is the only substance with an aromatic ring structure in sustainable carbon resources. It is one of the important ways to replace and supplement the existing fossil resources for the preparation of aromatic compounds.

[0003] The current utilization methods of lignin take advanta...

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