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Preparation method and application of ionic liquid functionalized smectite clay-SO3H-IL composite material

A technology of -SO3H-IL and composite materials, applied in the direction of chemical instruments and methods, applications, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of low, only 10%, and achieve large sample volume , low cost, simple operation

Inactive Publication Date: 2018-12-21
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, at the same temperature, under the hydrolysis catalysis of 30% sulfuric acid solution, the selectivity to glucose is not high, only 10%

Method used

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  • Preparation method and application of ionic liquid functionalized smectite clay-SO3H-IL composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 12.0g montmorillonite (the cation exchange capacity CEC of montmorillonite used is 93.94mmol / 100g) and place it in a 500ml flask, pour 360.0ml deionized water into it, stir for 10min, then add 2.5ml (3-mercaptopropane base) trimethoxysilane (0.5CEC), stirred at 80°C for 20 min for hydrothermal reaction, and then centrifuged and washed the product 4 times with deionized water to obtain the montmorillonite-SH composite material. Then transfer to 232mL 30% hydrogen peroxide and absolute ethanol mixed solution (the volume ratio of hydrogen peroxide and absolute ethanol is 1:3), stir at 60°C for 3h, then centrifuge and wash the product 4 times with deionized water, and then Put the viscous solid into an evaporating dish, and dry it in a constant temperature drying oven at 120°C for 3 hours to obtain montmorillonite-SO 3 Hcomposites. montmorillonite-SO 3 6.0 g of H composite material powder was dispersed in 100.0 ml of 2 mol / L sodium chloride solution, ultrasonicated ...

Embodiment 2

[0037] The reaction time of the grafted mercapto group in Example 1 was increased from 20min to 30min, and other steps were as in Example 1, and the obtained product was recorded as material 2 in turn.

Embodiment 3

[0039] The reaction time of the grafted mercapto group in Example 1 was increased from 20min to 40min, and other steps were as in Example 1, and the obtained product was recorded as material 3 in turn.

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Abstract

The invention discloses preparation method and application of an ionic liquid functionalized smectite clay-SO3H-IL composite material. The preparation method comprises the following steps: 1) uniformly mixing and stirring smectite clay and deionized water to obtain a mixture 1; 2) adding a mercapto-containing preparation raw material 2 into the mixture, and performing mercapto grafting to obtain smectite clay-SH; 3) performing mercapto oxidation of the smectite clay-SH to obtain smectite clay-SO3H; 4) dispersing the smectite clay-SO3H powder in a sodium chloride solution to obtain smectite clay-SO3Na; 5) enabling the smectite clay-SO3Na to react with 1-methyl-3-(3-trimethoxysilylpropy)imidazolium chloride to obtain ionic liquid functionalized smectite clay-SO3Na-IL; 6) acidifying the ionicliquid functionalized smectite clay-SO3Na-IL to obtain the ionic liquid functionalized smectite clay-SO3H-IL composite material. The smectite clay-SO3H-IL composite material provided by the inventionis applied to the preparation of reducing sugar through biomass hydrolysis, showing good catalytic performance.

Description

(1) Technical field [0001] The present invention relates to smectite clay-SO functionalized by ionic liquid 3 The preparation and application of H-IL composite material, especially its application as a catalyst in the field of biomass hydrolysis to reduce sugar. (2) Background technology [0002] Cellulose widely exists in biomass such as plants, algae, and agricultural waste, and the organic biomass produced by photosynthesis in the world can reach 1.18×10 11 It is the most extensive biomass resource on the earth, and it is mainly a polysaccharide composed of D-glucose units combined with β-1,4 glycosidic bonds. As a linear Long-chain macromolecules, cellulose has a large number of hydrogen bond network structures, hydrogen bonds make cellulose have special properties such as water absorption, crystallinity, chemical activity and self-assembly. The complex hydroxyl structure in the cellulose molecule makes it easy to form intramolecular and intermolecular hydrogen bonds, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C13K1/02C13K11/00C13K13/00
CPCB01J31/0277C13K1/02C13K11/00C13K13/00
Inventor 童东绅杨淼周扬周春晖俞卫华
Owner ZHEJIANG UNIV OF TECH
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