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Preparation method for high-strength copper alginate aerosol catalyst

A copper alginate, aerosol technology, applied in chemical instruments and methods, physical/chemical process catalysts, catalytic reactions, etc., can solve problems such as low mechanical properties, and achieve good mechanical properties, high conversion rate, and high reactivity. Effect

Inactive Publication Date: 2017-07-18
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcoming the disadvantages of low mechanical properties of copper alginate aerosol catalyst

Method used

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  • Preparation method for high-strength copper alginate aerosol catalyst
  • Preparation method for high-strength copper alginate aerosol catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take sixteen groups of catalysts for the orthogonal test, weigh 1.0 g (10 mmol) of phenol and 50 mg of catalyst according to the mass ratio of phenol and catalyst of 20:1, and weigh the ratio of the mass g of phenol to the volume mL of the reaction medium as 1 :30 , weigh 30 mL of water; put the weighed phenol, catalyst and water into a three-necked flask, place the three-necked flask in a constant temperature water bath, and stir under magnetic force, when the temperature reaches 70 °C, the phenol and hydrogen peroxide 2 mL (20 mmol) of hydrogen peroxide weighed at a molar ratio of 1:2 was added dropwise to the three-neck flask at a rate of 0.1 mL / min, and the reaction time was started after the addition was completed. The reaction time was 1 h, and the target product. The reaction solution after the reaction in the examples was suction filtered to separate the catalyst and the reaction solution.

[0036] The activity data of the catalyst for phenol hydroxylation are ...

Embodiment 2

[0040] Take the first group of catalysts in the orthogonal test, weigh 1.0 g (10 mmol) of phenol and 20 mg of the catalyst according to the mass ratio of phenol and catalyst of 50:1, and weigh the ratio of the mass of phenol to the volume of the reaction medium as 1:30 g / mL, weigh 30 mL of water; put the weighed phenol, catalyst and water into a three-necked flask, place the three-necked flask in a constant temperature water bath, and stir under magnetic force. When the temperature reaches 70 °C, the phenol and Hydrogen peroxide 3 mL (30 mmol) weighed with a hydrogen peroxide molar ratio of 1:3 was added drop by drop into the three-necked flask at a rate of 0.1 mL / min. target product. The reaction solution after the reaction in the examples was suction filtered to separate the catalyst and the reaction solution.

Embodiment 3

[0042] Take the first group of catalysts in the orthogonal test, weigh 1.0 g (10 mmol) of phenol and 10 mg of catalyst according to the mass ratio of phenol and catalyst of 100:1, and weigh 1:30 g according to the mass ratio of phenol and the volume of the reaction medium / mL, weigh 30 mL of water; put the weighed phenol, catalyst and water into a three-necked flask, place the three-necked flask in a constant temperature water bath, and stir under magnetic force. When the temperature reaches 30 °C, the phenol and hydrogen peroxide 1 mL (20 mmol) of hydrogen peroxide weighed at a molar ratio of 1:1 was added dropwise to the three-neck flask at a rate of 0.1 mL / min, and the reaction time was started after the addition was completed. The reaction time was 2 h, and the target product. The reaction solution after the reaction in the examples was suction filtered to separate the catalyst and the reaction solution.

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Abstract

The invention discloses a preparation method for a high-strength copper alginate aerosol catalyst. An organic polymer is introduced for forming a double-network structure, so that the mechanical property of the metallic alginate aerosol is enhanced. Reinforcement, namely, graphene, is adopted for further enhancing the mechanical strength of the double-network structure aerosol. The preparation method comprises the following steps: adding graphene into distilled water; ultrasonically treating till uniformly dispersing; adding organic reinforcements, namely, polyacrylamide and sodium alginate; adding water and mechanically stirring till being uniform and sticky; dripping the acquired sticky solution into a mold; immersing into a metal cooper solution and thermostatically reacting; and performing freeze drying, thereby acquiring the end product. The mechanical property of the copper alginate aerosol catalyst prepared according to the invention is greatly promoted.

Description

technical field [0001] The invention relates to a preparation method of a high-strength copper alginate aerosol catalyst. Background technique [0002] Alginate is a polymer compound extracted from brown algae, which is connected by β-D-mannuronic acid (M unit) and α-L-guluronic acid (G unit) by 1,4-glycosidic bonds. And it is a linear polysaccharide composed of different GGG and MMM fragments. It is the only polysaccharide that can dissolve in water at room temperature to form a hydrosol, and its linear long molecular chain is similar to that of pure polyuronic acid. [0003] Alginate is widely used in food, medicine, textile, printing and dyeing, papermaking, daily chemical and other products, as thickener, emulsifier, stabilizer, adhesive, sizing agent, etc. [0004] The good adsorption performance of natural polysaccharide alginate for metals provides conditions for it to be used as a metal catalyst support. At the same time, metal alginate aerosol has a high specific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C07C37/60C07C39/08C08J9/28C08J3/075C08L5/04C08L33/26C08K3/04
CPCC07C37/60C08J3/075C08J9/28C08L5/04C08L33/26B01J31/069B01J2231/70C08J2305/04C08J2201/0484C08J2205/026C08J2333/26C08J2405/04C08L2203/14B01J35/23C07C39/08C08K3/04
Inventor 史丰炜单聪王连旭李忠序
Owner CHANGCHUN UNIV OF TECH
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