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Mesoporous Me/UIO-66-Zr MOF material as well as preparation method and application thereof

A technology of uio-66-zrmof and mesoporous, applied in the field of mesoporous Me/UIO-66-ZrMOF material and its preparation, can solve the problems of poor circulation and cost, and achieve improved stability, easy removal, and simple and easy method line effect

Active Publication Date: 2020-12-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the biorefinery industry, cellulase spends about 50% of the total hydrolysis cost in the bioethanol production process, and the cycle is poor

Method used

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  • Mesoporous Me/UIO-66-Zr MOF material as well as preparation method and application thereof
  • Mesoporous Me/UIO-66-Zr MOF material as well as preparation method and application thereof
  • Mesoporous Me/UIO-66-Zr MOF material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1: Preparation of UIO-66-Zr, dextran 1500@UIO-66-Zr and mesoporous Me / UIO-66-Zr MOF materials

[0050] Preparation of UIO-66-Zr MOF material: Weigh 0.163 g of zirconium chloride and 0.116 g of terephthalic acid and dissolve them in 10 mL of DMF respectively, add zirconium chloride solution into the DMF solution containing terephthalic acid, and mix thoroughly by ultrasonication for 30 minutes . Then keep it in an oil bath at 80°C for 24 h, after natural cooling, wash with DMF and methanol three times, and dry at 60°C under vacuum.

[0051] Preparation of Dextran 1500@UIO-66-Zr: Weigh 0.163 g of zirconium chloride and 0.116 g of terephthalic acid and dissolve them in 10 mL of DMF respectively, and add 2 mg of dextran in turn to the DMF solution containing terephthalic acid Sugar 1500 and zirconium chloride solution were thoroughly mixed by ultrasonication for 30 minutes. Then put it in an oil bath at 80°C for 24 h, after natural cooling, wash with DMF and metha...

Embodiment 2

[0059] Embodiment 2: Preparation of mesoporous Me / UIO-66-Zr MOF material

[0060] Weigh 0.163 g of zirconium chloride and 0.116 g of terephthalic acid and dissolve them in 10 mL of DMF, respectively, add 2 mg of dextran 1500 and zirconium chloride solution to the DMF solution containing terephthalic acid, and mix thoroughly by ultrasonication for 30 minutes . Then put it in an oil bath at 70°C for 24 h, after natural cooling, wash with DMF and methanol three times respectively, and place it at 60°C for vacuum drying. After drying, the sample is ground evenly. Then it was calcined in a tube furnace at 325°C for 2h. The sample was activated in 10 mL of methanol for three days to obtain a mesoporous Me / UIO-66-Zr MOF material, which was stored for future use.

Embodiment 3

[0061] Embodiment 3: Preparation of mesoporous Me / UIO-66-Zr MOF material

[0062] Weigh 0.163 g of zirconium chloride and 0.116 g of terephthalic acid and dissolve them in 10 mL of DMF, respectively, add 2 mg of dextran 1500 and zirconium chloride solution to the DMF solution containing terephthalic acid, and mix thoroughly by ultrasonication for 30 minutes . Then put it in an oil bath at 120°C for 24 h, after natural cooling, wash with DMF and methanol three times each, and dry it in vacuum at 60°C. After drying, the sample is ground evenly. Then it was calcined in a tube furnace at 325°C for 2h. The sample was activated in 10 mL of methanol for three days to obtain a mesoporous Me / UIO-66-Zr MOF material, which was stored for future use.

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Abstract

The invention provides a mesoporous Me / UIO-66-Zr MOF material as well as a preparation method and application thereof, and belongs to the technical field of nano material preparation. The mesoporous Me / UIO-66-Zr MOF material prepared in the invention can be used for immobilization of cellulase, the obtained immobilized enzyme Cellulase@ Me-UIO-66-Zr improves the stability and the reusability of cellulose dissolution, and the mesoporous Me / UIO-66-Zr MOF material can be used for overcoming the defects of the free cellulase in the aspects of pH stability, thermal stability, storage stability andthe like while accelerating diffusion of a macromolecular substrate.

Description

technical field [0001] The invention relates to a mesoporous Me / UIO-66-Zr MOF material and its preparation method and application, belonging to the technical field of nanomaterial preparation. Background technique [0002] Porous materials have always attracted the attention of many researchers because of their great influence in industrial catalysis, adsorption separation, ion exchange, medicine, optics, biology, sensing, information and many other fields. Rational design and controllability of porous materials are key to their special applications, but are challenging in practical preparation. Traditional porous solids, such as zeolites, activated carbon, mesoporous silica, etc., are relatively difficult to modify and adjust their structures and functions at the molecular level. The newly developed metal-organic frameworks (MOFs), composed of organic linkers and inorganic nodes, are easier to regulate and modify. So far, related research has mainly focused on microporous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N11/14
CPCC12N11/14C12N9/2437
Inventor 王怡王赟韩娟李媛媛吴嘉聪周阳
Owner JIANGSU UNIV
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