Graphite-like g-C3N4/montmorillonite composite material and application thereof in cellulose hydrolysis

A technology of composite materials and montmorillonite, which is applied in the field of cellulose hydrolysis to produce reducing sugars, can solve problems such as unseen research reports, and achieve the effects of simple operation, good catalytic performance, and large sample volume

Inactive Publication Date: 2017-06-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Graphite-like g-C3N4/montmorillonite composite material and application thereof in cellulose hydrolysis
  • Graphite-like g-C3N4/montmorillonite composite material and application thereof in cellulose hydrolysis
  • Graphite-like g-C3N4/montmorillonite composite material and application thereof in cellulose hydrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take by weighing 2g montmorillonite (the cation exchange capacity CEC of montmorillonite used is 93.94mmol / 100g) is placed in the beaker, pours into 50ml deionized water, stirs 10min, then adds 0.16g liquid cyanamide (1CEC), in Stir at 25°C for 1 hour for exchange adsorption, then centrifuge the product in a centrifuge and wash it with water for several times, then put the viscous solid in an evaporating dish, dry it in a constant temperature drying oven, and grind the dried white solid into powder Then pour it into the quartz tank, then put the quartz tank into the quartz sleeve of the single tube furnace, and keep the sample in the constant temperature zone. After sealing, pass nitrogen gas for 1 h to remove the air in the quartz sleeve. The tube furnace raised the temperature from 20°C to 500°C at a rate of 10°C / min, kept the temperature for 4 hours, and cooled naturally after the calcination to obtain the product g-C 3 N 4 / montmorillonite composite material, deno...

Embodiment 2

[0044] Change the quality of liquid cyanamide in embodiment 1 into 0.32g (2CEC), other steps are as embodiment 1, obtain product and be recorded as material 2, composite material XRD result is as follows figure 1 shown.

Embodiment 3

[0046] Change the quality of liquid cyanamide in Example 1 to 0.48g (3CEC), and other steps are as in Example 1, and the product obtained is recorded as material 3. The XRD results of composite materials are as follows: figure 1 shown.

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Abstract

The invention discloses a graphite-like g-C3N4/montmorillonite composite material and an application thereof in cellulose hydrolysis. The g-C3N4/montmorillonite composite material is prepared through the following steps of (1) mixing montmorillonite and deionized water and then stirring evenly to obtain a mixture for later use; (2) adding a nitrogen-containing compound to the mixture obtained in the step (1), carrying out exchange adsorption to obtain homogenate; (3) washing the homogenate prepared in the step (2) for multiple times and carrying out centrifugal separation; (4) drying lower solid obtained through centrifugal separation at 50-120 DEG C for 5-24h; and (5) grinding solid dried in the step (4) into powder, heating the powder in a nitrogen atmosphere to 200-800 DEG C, roasting at constant temperature for 1-10h, and naturally cooling after roasting is completed to obtain the product graphite-like g-C3N4/montmorillonite composite material. The invention provides an application of the graphite-like g-C3N4/montmorillonite composite material as a catalyst in cellulose hydrolysis. The graphite-like g-C3N4/montmorillonite composite material has good catalytic performance.

Description

[0001] (1) Technical field [0002] The present invention relates to a kind of graphite phase g-C 3 N 4 / Montmorillonite composite material and its application, especially its application as a catalyst in the field of cellulose hydrolysis to reduce sugar, and has high reducing sugar selectivity. [0003] (2) Background technology [0004] Cellulose is a green, clean and renewable energy source and the most extensive biomass resource on the earth. It is mainly a polysaccharide composed of D-glucose units combined with β-1,4 glycosidic bonds. Molecules, 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, making it difficult to dissolve in water and common organic solvents. Hydrolysis is an important means of...

Claims

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Application Information

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IPC IPC(8): B01J27/24C13K1/02
CPCB01J27/24C13K1/02
Inventor 童东绅吴程文周春晖俞卫华
Owner ZHEJIANG UNIV OF TECH
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