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Method for preparing copper-based catalyst

A copper-based catalyst, chloride technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the complicated operation, prolonged catalyst preparation process, and energy consumption. Large and other problems, to achieve the effect of simple preparation process, short reaction time, and improved production efficiency

Active Publication Date: 2014-09-10
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these post-treatment techniques generally need to be carried out in an organic solvent, and finally the organic solvent must be removed, which makes the catalyst preparation process prolong, the operation is cumbersome, and the energy consumption is large.

Method used

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  • Method for preparing copper-based catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A mixed aqueous solution made of 250g copper sulfate pentahydrate and 58.5g sodium chloride is used as a feed liquid, and is transferred into a pressure-resistant and corrosion-resistant reaction kettle. Add polyvinyl alcohol and glucose 18g, the mass ratio of polyvinyl alcohol and reducing agent glucose is 2:1, add 163.25g of copper-based catalyst carrier, after ultrasonic dispersion, transfer the material liquid into the reaction kettle, seal the kettle, seal and heat to 120°C, water Thermal reduction reaction was carried out for 7 hours to form cuprous chloride crystals, which were filtered after cooling, and the precipitate was washed with dilute hydrochloric acid and ethanol in sequence, and vacuum-dried at 70°C to obtain the target product cuprous chloride crystal catalyst.

[0044] Wherein, the preparation steps of copper-based catalyst carrier are as follows:

[0045] Weigh 20g of 200-mesh distiller's grains, carbonize with 80g of mixed acid at 20°C for 2 hours, t...

Embodiment 2

[0047] A mixed aqueous solution made of 250g copper sulfate pentahydrate and 58.5g sodium chloride is used as a feed liquid, and is transferred into a pressure-resistant and corrosion-resistant reaction kettle. Add polyethylene glycol and reducing agent glucose 30g, the mass ratio of polyethylene glycol and reducing agent glucose is 4:3, add 169.25g of copper-based catalyst carrier, after ultrasonic dispersion, transfer the material liquid into the reaction kettle, seal the kettle, and heat it tightly to 140°C, hydrothermal reduction reaction for 7 hours to produce cuprous chloride crystals, filtered after cooling, washed the precipitate with dilute hydrochloric acid and ethanol in sequence, and vacuum dried at 70°C to obtain the target product cuprous chloride crystal catalyst.

[0048] Wherein, the preparation steps of copper-based catalyst carrier are as follows:

[0049] Weigh 20g of 300-mesh distiller's grains, carbonize with 120g of mixed acid at 80°C for 12h, the ratio ...

Embodiment 3

[0051] The mixed aqueous solution made of 250g copper sulfate pentahydrate and 64g sodium chloride was used as the feed liquid, and transferred into a pressure-resistant and corrosion-resistant reaction kettle. Copper polyvinylpyrrolidine and glucose reducing agent 36g, the mass ratio of copper polyvinylpyrrolidine and glucose reducing agent is 1:1, add 175g copper-based catalyst carrier, after ultrasonic dispersion, transfer the material liquid into the reaction kettle, seal the kettle, and seal it tightly Heating to 140°C, hydrothermal reduction reaction for 8 hours, forming cuprous chloride crystals, filtering after cooling, washing the precipitate with dilute hydrochloric acid and ethanol in sequence, and vacuum drying at 70°C to obtain the target product cuprous chloride crystal catalyst.

[0052] Wherein, the preparation steps of copper-based catalyst carrier are as follows:

[0053] Weigh 20g of 250-mesh distiller's grains, carbonize with 100g of mixed acid at 80°C for ...

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Abstract

The invention relates to a method for preparing a copper-based catalyst. The method includes the following steps: copper (II) salt is dissolved into water-soluble chloride or a mixture of the water-soluble chloride and alkali liquor; after a crystal growth inhibitor is added, matter containing aldehyde groups, alcohol groups or alcohol sugar groups is added with the temperature ranging from 20 DEG C to 40 DEG C, the rotating speed ranging from 500 r / min to 1000 r / min and the stirring time ranging from 30 min to 60 min to serve as a reducing agent, copper-based catalyst carriers are added, feed liquid is transferred to a reaction still after ultrasonic dispersion, the reaction still is then sealed, heating is carried out until the temperature ranges from 50 DEG C to 300 DEG C, and the reaction time ranges from 0.5 h to 48 h; filtering is carried out after cooling is carried out to obtain precipitates, the precipitates are sequentially washed with diluted hydrochloric acid and ethyl alcohol, and the copper-based catalyst regular in shape is obtained after drying is carried out. The method for preparing the copper-based catalyst is simple in preparing technology, easy to control and free of noxious gas and liquid waste discharging, water and energy are saved, the powder with the good copper active component dispersion is directly obtained, and possibly-formed powder hard agglomerates are avoided.

Description

technical field [0001] The invention relates to a catalyst, in particular to a preparation method of a copper-based catalyst. Background technique [0002] Activated carbon is a kind of adsorption material with highly developed pore structure and large specific surface area. The raw materials for the preparation of activated carbon are mainly divided into two categories: plant and mineral. Plants mainly include: wood, coconut shell, apricot core, etc.; minerals include: coal, petroleum coke, synthetic resin, etc. The general preparation method of activated carbon mainly goes through two steps of carbonization and activation. The purpose of carbonization is to obtain initial voids suitable for activation and carbonized materials with certain mechanical strength. At present, the general carbonization method is to conduct heat treatment under nitrogen protection. Due to the long carbonization time and high carbonization temperature, the energy consumption is very large. The ...

Claims

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Application Information

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IPC IPC(8): B01J27/122B01J23/72
Inventor 王广建王芳焦冲曹永刚
Owner QINGDAO UNIV OF SCI & TECH
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