Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for preparing lignocellulosic biomass coupled with phenols and furan derivatives

A technology of lignocellulose and furan derivatives is applied in the field of biomass energy conversion and utilization, which can solve the problems of environmental pressure, increase the biomass refining process technology and energy consumption, waste resources, etc., so as to save costs and improve the utilization rate of raw materials. , the effect of a wide range of raw materials

Active Publication Date: 2019-07-09
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the existing pretreatment methods can effectively break the structure of lignocellulose and increase the efficiency of enzymatic hydrolysis and fermentation, the existing pretreatment technology can only effectively use the cellulose and hemicellulose in the raw material, and the lignin part is used as The waste degrades and dissolves into the pretreatment liquid or remains in the enzymatic residue, which wastes resources and brings additional environmental pressure to biorefinery production
The additional lignin conversion and utilization technology will inevitably increase the process and energy consumption of the biomass refining process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With 5g of pennisetum (containing 32% cellulose, 22% hemicellulose, and 28% lignin) with a particle size of 0.5mm as raw material, in the reactor, add raw material, CeO2 solid alkali in a mass ratio of 1:0.5:25 Catalyst and water, after reacting at 180°C for 30 minutes, pass through a 80-mesh sieve, collect the raw material slag left on the sieve, and then separate the solid from the sieve to obtain a solid alkali catalyst; collect the liquid phase, the liquid phase Containing 0.41g of phenolic products, wherein, monophenolic product 0.19g (calculated based on raw material lignin, phenolic product yield is 29.3%, single phenolic product yield is 13.6%); Furan derivative 1.21g (based on raw material total sugar calculation, the yield is 44.8%) and cyclopentenone derivatives 0.04g (calculated with the total sugar of the raw material, the yield is 1.5%); the raw material slag collected after the previous step pretreatment is placed in a pH value of 4.8 In the acetic acid / s...

Embodiment 2

[0028] With 5g of pennisetum (containing 32% cellulose, 22% hemicellulose, and 28% lignin) with a particle size of 0.5mm as raw material, in the reactor, add raw material, CeO2 solid alkali in a mass ratio of 1:0.5:25 Catalyst and water, react at 270°C for 60 minutes, pass through a 80-mesh sieve, collect the raw material slag left on the sieve, and separate the under-sieve from solid-liquid to obtain a solid alkali catalyst; collect the liquid phase, the liquid phase Containing 0.97g of phenolic products, wherein, 0.59g of monophenolic products (based on raw material lignin, the yield of phenolic products is 69.3%, and the yield of monophenolic products is 42.1%); furan derivatives 0.42g (based on the total raw material sugar calculation, the yield is 15.6%) and cyclopentenone derivatives 0.68g (calculated with the total sugar of the raw material, the yield is 25.2%); the raw material slag collected after the previous step pretreatment is placed in a pH value of 4.8 In the ac...

Embodiment 3

[0030] With 5g of pennisetum with a particle size of 0.5mm (containing 32% cellulose, 22% hemicellulose, and 28% lignin) as a raw material, in the reactor, add raw materials, KOH / Al2O3 at a mass ratio of 1:0.1:10 Solid alkali catalyst and water react at 240°C for 30 minutes, pass through a sieve of 80 meshes, collect the raw material slag left on the sieve, and separate the undersieve from solid-liquid to obtain a solid alkali catalyst; collect the liquid phase, Containing 0.73g of phenolic products in the liquid phase, wherein, 0.36g of monophenolic products (calculated based on raw material lignin, the yield of phenolic products is 52.1%, and the yield of monophenolic products is 25.7%); 0.55g of furan derivatives (based on raw material total sugar calculation, yield is 20.4%) and cyclopentenone derivative 0.74g (calculation based on raw material total sugar, yield is 27.4%); the raw material slag collected after the previous step pretreatment is placed in a pH value of Add ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for pretreating lignocellulose biomass and preparing phenol and a furan derivative in a coupling manner. The method comprises the following steps: by taking lignocellulose biomass of which the granularity is 0.5-2mm as a raw material, catalyzing stripping degradation of lignin and dissolution of hemicelluloses in lignocelluloses in a hydrothermal environment by taking solid alkali as a catalyst so as to break the dense structure of the lignocelluloses; at the same time, under the catalytic action of the solid alkali, degrading the lignin so as to produce a phenol product, and converting the hemicelluloses and cellulose, thereby preparing a furan derivative and a cyclopentenone derivative. By adopting the method, the phenol and furnace derivative and the cyclopentenone derivative are co-produced while pretreatment on lignocellulose biomass is completed, so that the utilization rate of the raw materials is increased, the economy of the pretreatment process is increased, and meanwhile, the solid alkali catalyst can be recycled and reused, so that the cost can be effectively lowered; furthermore, the reaction conditions can be changed, the pretreatment effect and the product generation can be regulated and controlled, and the method is wide in applicable raw material range.

Description

[0001] Technical field: [0002] The invention relates to the technical field of biomass energy conversion and utilization, in particular to a method for preparing lignocellulosic biomass coupled with phenols and furan derivatives. [0003] Background technique: [0004] The non-renewable and massive consumption of fossil fuels has led to the continuous deterioration of energy supply and ecological environment, which has aroused people's attention to the research and development of environmentally friendly renewable energy. In this context, research on lignocellulosic biomass refining, fuels and chemicals used to produce alternative petroleum products has received increasing attention. [0005] Lignocellulose is a natural polymer complex produced by plants through photosynthesis. It is the most abundant biomass resource in nature. It is mainly composed of cellulose, hemicellulose and lignin. Complex three-dimensional structure of space. Due to the crystalline structure of cel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/14C07G1/00C07C37/00C07C45/59C07C49/597C07D307/50C07D307/46
CPCY02P20/584
Inventor 袁振宏谭雪松王闻庄新姝赵月亓伟
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI