Method for preparing porous carbon material from humin and porous carbon material

Abstract

The invention relates to a method for preparing a porous carbon material from humin and a porous carbon material thereof.The method comprises the following steps that 1, humin and potassium ferrate / potassium permanganate are added into a mixed solution of water and ethyl alcohol, stirring is conducted for 12 h at the room temperature, the mixture is put into a drying oven to be dried, and a black solid is obtained; (2) putting the black solid into a tubular furnace under the protection of inert gas, and sufficiently calcining the black solid; and 3) cooling, taking out a black solid, and repeatedly washing with deionized water and an acid solution to obtain the biomass porous carbon material. The method has the advantages that the low-added-value by-product humin is converted into the porous biomass carbon material with utilization value, the preparation process has the characteristic of environmental friendliness, and the preparation method is simple, convenient, easy to operate and high in preparation efficiency. The prepared carbon material is high in specific surface area, large in pore volume and regular in structure, has a certain number of oxygen-containing groups on the surface, and has certain potential in the aspects of adsorption, chemical energy storage, efficient chemical process implementation and the like.

Description

technical field [0001] The invention relates to a method for preparing a porous carbon material from humin and a porous carbon material thereof, and relates to the application field of humin. Background technique [0002] With the increasingly prominent environmental problems and the increasing consumption of non-renewable fossil resources, the preparation of fuels from renewable biological resources and the transformation of green chemicals have attracted more and more attention. Lignocellulosic biomass and carbohydrates can be used to produce renewable platform chemicals such as 2,5-furandicarboxylic acid, 5-hydroxymethylfurfural, or levulinic acid through acid-catalyzed dehydration or oxidation routes. However, acid-catalyzed dehydration of carbohydrates generates large amounts of by-product humins during the transformation from starting materials to platform compounds. [0003] Humin is a polyfuran ring polymer with complex composition, which is mainly formed by the c...

AI Technical Summary

Problems solved by technology

However, this process also has problems such as high cost and high technical difficulty, which is not conducive to the promotion of the process of preparing carbon materials from humin

At the same time, the traditional way of preparing carbon materials often has problems such as strong dependence on templates, high energy consumption, and numerous steps. There are many inconveniences in the preparation process, which limits its further large-scale application.

Images