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Method for preparing major biomass platform compounds from sub/super critical methanol liquified cellulose

A technology of supercritical methanol and cellulose, which is applied in the preparation of liquid hydrocarbon mixtures, the petroleum industry, and the treatment of hydrocarbon oils. It can solve problems that need to be further explored, and achieve the effects of strong practicality, mild reaction conditions, and economical prices.

Inactive Publication Date: 2018-05-04
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there have been many studies on biomass in sub / supercritical organic solvents, and studies have shown that different solvents have different selectivities for product distribution. The distribution and mechanism analysis of the compounds still need to be further explored

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  • Method for preparing major biomass platform compounds from sub/super critical methanol liquified cellulose
  • Method for preparing major biomass platform compounds from sub/super critical methanol liquified cellulose
  • Method for preparing major biomass platform compounds from sub/super critical methanol liquified cellulose

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Embodiment 1

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the embodiments do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in this technical field. Unless otherwise specified, the reagents and materials used in the present invention are commercially available. The impact of embodiment 1 methanol consumption on the yield of main biomass platform compounds

[0037]1. Preparation of straw-like cellulose: Accurately weigh 30g of straw powder, refer to the relevant methods in the national standard GB / T 2677.1-93 ~ GB / T 2677.10-95, and pre-extract with ethanol-benzene (volume ratio: 2:1) , to remove fat-soluble substances; and then stir the straw powder with distilled water at 70-80°C for 2 hours to remove water-soluble substances such as polysaccharides and starch...

Embodiment 2

[0044] The influence of embodiment 2 reaction temperature on the yield of main biomass platform compound

[0045] 1. Method

[0046] Add 8g of dried cellulose powder and 160mL of methanol into a 1L batch autoclave with a magnetic stirrer, sealed and heated to 240°C to 320°C. ℃, and keep the reaction at this temperature for 60 min. Cool to room temperature and collect the product. Cool to room temperature and collect the product. The product collection method is the same as in Example 1. The product yield is calculated on the basis of dividing the mass of the product obtained by the mass of the raw material after removing the ash.

[0047] 2. The yield statistics of the main biomass platform compounds generated by the liquefaction of straw cellulose at a methanol dosage of 160mL, a reaction time of 60min, and a reaction temperature distribution of 240°C, 260°C, 280°C, 300°C, and 320°C were carried out. Calculated to obtain the relative content of the main biomass platform ...

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Abstract

The invention belongs to the technical field of energy and chemical industry, and particularly relates to a method for preparing major biomass platform compounds from sub / super critical methanol liquified cellulose. Stalk type cellulose and sub / super critical methanol are put into a pressure-resistant container with a magnetic stirring device to react for 0 to 120min under the conditions of 220 to380 DEG C and 5.0 to 11.0MPa; the materials are cooled to room temperature; products are collected, wherein the ratio of the stalk type cellulose to the methanol is (1 to 11g): (0 to 200mL). The methanol is used as a reaction solvent; the concentration of free radicals can be greatly improved; great influence is realized on ingredient distribution of the major biomass platform compounds (saccharides, hydrocarbon, alcohol, esters and acids). The super critical fluid liquidation technology used by the experiment method has the advantages that the liquid product yield is high; the platform compound selectivity is good; the comprehensive benefits are obvious, and the like. The use and popularization performance is high.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and more specifically, relates to a method for preparing main biomass platform compounds by sub / supercritical methanol liquefied cellulose. Background technique [0002] In recent years, people have paid more and more attention to the composition and influencing factors of the compounds in the bio-oil when studying the liquefaction of straw-based cellulose to prepare bio-oil. More detailed liquefaction analysis is more beneficial to obtain the compounds people need. Biomass energy is the most common renewable carbon-containing energy. According to the principle of similar carbon-hydrogen ratio for optimizing the utilization of carbon-containing energy, the production of transportation fuel and petrochemical products is the best way to utilize bioenergy. Many scholars have found that ketones, esters, alcohols, phenols, and acids account for a large proportion of liquefied bio-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
CPCC10G1/00C10G1/002C10G2300/1014
Inventor 解新安孙娇王娅莉樊荻李雁李璐王鑫廖玮婷
Owner SOUTH CHINA AGRI UNIV
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