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Non-enzymatic cellulose hydrolysis and saccharification technology

A cellulose, non-enzymatic technology, applied in the production of sugar, sugar production, glucose production, etc., can solve the problems of long ball milling time, high processing energy consumption, low concentration of sugar solution, etc., and achieve low pollution and energy consumption. Low, the effect of promoting the process of industrialization

Active Publication Date: 2019-09-06
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Literature Chem.Sci., 2016, 7, 692–696 uses a planetary ball mill to mix eucalyptus bark with a catalyst for two hours, and then hydrolyze glucose in the presence of 120ppm hydrochloric acid. The yield can reach 80%, but there is still the use of trace hydrochloric acid And the concentration of recovered sugar solution is very low
Patent CN201711010502.2 discloses a lignocellulose hydrolysis fermentation method catalyzed by phosphorus pentoxide. Lignocellulose and phosphorus pentoxide are mixed and ball milled for two hours to obtain 80% glucose yield; however, the process of ball milling Excessive ball milling time results in high processing energy consumption

Method used

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  • Non-enzymatic cellulose hydrolysis and saccharification technology

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Effect test

Embodiment 1

[0027] Preparation of lignocellulose hydrolyzate

[0028] Weigh 50g of corn stalks and 2.5g of phosphorus pentoxide, mix them in a ball mill jar, mill for 30 minutes, and then heat to 180°C for 60 minutes. Then weigh 4g of the ball-milled sample into the reactor, add 40mL of water, and hydrolyze for 40min at 215°C. After the reaction was completed, it was cooled to room temperature, and the liquid product was collected. Qualitative and quantitative analysis by HPLC results in a glucose yield of 50.1%.

Embodiment 2

[0030] Weigh 50 g of corn stalks and 5 g of phosphorus pentoxide and mix them in a ball mill jar, mill for 30 minutes, and then heat to 140° C. for 60 minutes. Then weigh 4g of the ball-milled sample into the reactor, add 40mL of water, and hydrolyze for 40min at 215°C. After the reaction was completed, it was cooled to room temperature, and the liquid product was collected. Qualitative and quantitative analysis by HPLC results in a glucose yield of 52.3%.

Embodiment 3

[0032] Weigh 50 g of corn stalks and 5 g of phosphorus pentoxide, mix them in a ball mill jar, mill for 30 minutes, and then heat to 80° C. for 60 minutes. Then weigh 4g of the ball-milled sample into the reactor, add 40mL of water, and hydrolyze for 40min at 215°C. After the reaction was completed, it was cooled to room temperature, and the liquid product was collected. Qualitative and quantitative analysis by HPLC results in a glucose yield of 45.3%.

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Abstract

The invention provides a non-enzymatic cellulose hydrolysis and saccharification technology. The technology concretely comprises the following steps: mixing and mechanically crushing cellulose-containing biomasses and solid oxides, heat-treating the obtained mechanically-crushed mixture, and hydrolyzing and saccharifying the heat-treated mixture. The technology which combines mechanical energy with heat energy to pretreat lignocellulose has the following advantages: the energy consumption in lignocellulose pretreatment using a single mechanical method is reduced greatly, the reaction conditions are mild, the cellulose-containing biomass materials are efficiently converted into monosaccharide products under a low energy consumption condition, the energy consumption is low, pollution is low,and the development of a biomass sugar platform and the industrialization of bio-based products are effectively promoted.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a non-enzymatic cellulose hydrolysis and saccharification technology. Background technique [0002] Lignocellulose is an inexhaustible and inexhaustible renewable biomass resource in nature. With the decline of oil and coal reserves and the increasing concern of human beings about environmental pollution, the raw materials of the world's chemical industry are gradually changing from fossil resources to biomass resources. Lignocellulose is considered to be the green biological resource that is most likely to replace fossil energy. . Lignocellulosic biomass is composed of three components: cellulose, hemicellulose and lignin. Cellulose and hemicellulose are mainly sugar polymers, while lignin is an aromatic polymer with phenylpropane as the basic unit. After hydrolysis and saccharification, lignocellulosic biomass can be converted into monosaccharides. Using t...

Claims

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Application Information

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IPC IPC(8): C13K1/02
CPCC13K1/02
Inventor 张宗超刘秀梅
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI