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Vinasse-based solid acid catalyst as well as preparation method and application thereof

A solid acid catalyst, distillers grains-based technology, applied in chemical instruments and methods, physical/chemical process catalysts, applications, etc., can solve the problems of less application research, and achieve the effects of simple process flow, stable performance and environmental friendliness

Inactive Publication Date: 2021-10-26
MOUTAI INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are few studies on the preparation of distillers grains-based solid acid and its homogeneous catalytic hydrolysis and saccharification of cellulosic biomass.

Method used

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  • Vinasse-based solid acid catalyst as well as preparation method and application thereof
  • Vinasse-based solid acid catalyst as well as preparation method and application thereof
  • Vinasse-based solid acid catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: The solid acid catalyzed hydrolysis reaction was carried out in a 50mL reactor (equipped with a polytetrafluoroethylene lining), and 0.5g of sorghum straw was added to the reactor, and 0g, 0.05g, 0.25g, 1.0g, 1.5g of solid acid catalyst, add distilled water to 50mL, stir evenly, cover tightly and seal, place in an oven at 100-160°C and heat for 1-5h. After the reaction is completed, the hydrolyzate is separated from the hydrolyzed residue and solid acid by suction filtration; the hydrolyzate is filtered through a filter membrane with a filter pore size of 0.22 μm, and the obtained filtrate is obtained by using 3,5-dinitrosalicylic acid ( DNS) method measures reducing sugar content, and the reducing sugar output result of calculation is as shown in table 1:

[0026] Table 1 Effect of distiller's grains-based solid acid dosage on sugar production by solid acid-catalyzed hydrolysis of sorghum straw

[0027]

[0028] Table 1

[0029] It can be seen from Tabl...

Embodiment 2

[0030] Embodiment 2: The distillers grains-based solid acid catalyst of the present invention is used to catalyze the hydrolysis of agricultural and forestry wastes to produce sugar, comprising the following steps:

[0031] The solid acid catalyzed hydrolysis reaction was carried out in a 50mL reactor (equipped with a polytetrafluoroethylene lining), and 0.5g fir chips were added to the reactor, and 0g, 0.05g, 0.25g, 1.0g, and 1.5g of solid acid were added respectively. Catalyst, add distilled water to 50mL, stir evenly, cover tightly and seal, place in an oven at 100-160°C and heat for 1-5h. After the reaction is finished, the hydrolyzate is separated from the hydrolyzed residue and solid acid by suction filtration; the hydrolyzate is filtered through a filter membrane with a filter pore size of 0.22 μm, and the obtained filtrate is obtained by using 3,5-dinitrosalicylic acid ( DNS) method measures reducing sugar content, and the reducing sugar output result of calculation is...

Embodiment 3

[0036] Example 3: The solid acid catalyzed hydrolysis reaction is carried out in a 50mL reactor (equipped with a polytetrafluoroethylene liner). Add 0.5g of sorghum stalks to the reactor, then add 0.25g of solid acid catalyst, add distilled water to 50mL, and stir Evenly, cover tightly and seal, place in an oven at 100-160°C and heat for 1-5 hours. After the reaction is over, the hydrolyzate is separated from the hydrolyzed residue and solid acid by suction filtration. The hydrolyzate is filtered through a filter membrane with a filter pore size of 0.22 μm. The obtained filtrate is 3,5-dinitrosalicylic acid (DNS ) method for the determination of reducing sugar content. According to the above steps, the separated solid acid is reused 4 times, and the reusability results of the solid acid are as follows: figure 2 shown.

[0037] Depend on figure 2 It can be seen that the concentration of reducing sugar in sorghum straw can reach 383.8 mg / g after 5 times of recycling of soli...

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Abstract

The invention discloses a preparation method of a vinasse-based solid acid catalyst, which belongs to the technical field of functional material preparation and organic solid waste recycling. The preparation method comprises the following steps of 1, air-drying vinasse under a natural condition, and then crushing the air-dried vinasse, 2, stirring and mixing the crushed vinasse in the step 1 and concentrated sulfuric acid in a reaction kettle, then putting the reaction kettle in a drying oven at the temperature of 100-200 DEG C to react for 2-8 hours, taking out a black product in the reaction kettle after the reaction is finished, and washing the black product for multiple times until the washed filtrate is neutral and SO4<2-> ions cannot be detected in the filtrate, and 3, drying the washed black product in a drying oven at 104-106 DEG C until the weight is constant, and grinding to 200 meshes to obtain the solid acid catalyst. The high-activity solid acid is prepared from the vinasse, the solid acid is applied to agricultural and forestry waste treatment, resource utilization of agricultural and forestry waste is effectively improved, and the application potential and prospect are wide.

Description

technical field [0001] The invention relates to the technical field of preparation of functional materials and recycling of organic solid waste, in particular to a distiller's grain-based solid acid catalyst and its preparation method and application. Background technique [0002] With the continuous acceleration of social development, the shortage of fossil energy and the environmental pollution caused by its utilization make human beings urgently develop clean energy. As a typical lignocellulosic biomass, agricultural and forestry waste is a clean and renewable energy source, which has the advantages of abundant sources, low price, strong regeneration, clean and environmental protection, etc. The development and utilization of biomass energy can alleviate the energy crisis and reduce the waste of resources. , Reducing environmental pollution and slowing down the greenhouse effect are of great significance. Agricultural and forestry waste has a complex cellulose-hemicellul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/053C13K1/02
CPCB01J27/053C13K1/02
Inventor 陶雪郑羽西宋福德曾燕琼秦羽李超陆玟竹廖迅彭施曼
Owner MOUTAI INST
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