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Method for preparing copper-based catalyst

A technology of copper-based catalyst and zinc oxide, which is applied in the field of preparation of copper-based catalysts, can solve the problems of low catalytic efficiency, poor recycling activity, large amount of copper-based catalysts, etc., achieve high catalytic activity, shorten reaction time and dosage little effect

Inactive Publication Date: 2014-12-10
WUZHOU PINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a preparation method of a copper-based catalyst, which can solve the problems of large consumption, low catalytic efficiency and poor recycling activity of existing copper-based catalysts

Method used

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  • Method for preparing copper-based catalyst

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Embodiment 1

[0015] The preparation method of this copper-based catalyst comprises the following steps:

[0016] A, 60g of sodium carbonate is dissolved in water to obtain sodium carbonate solution, which is set aside;

[0017] B, first 90g copper sulfate is dissolved in 60 DEG C of water to prepare a copper sulfate solution, then under stirring conditions, add the sodium carbonate solution prepared in step A to the copper sulfate solution to react, when the pH of the reaction solution When value reaches 10, stop adding described sodium carbonate solution, filter, collect the precipitate that reaction produces;

[0018] C, the precipitate that B step is made is washed with water, until the aqueous solution of described precipitate checks without sulfate radical with barium chloride;

[0019] D. Add 5g of zinc oxide to the aqueous solution of the precipitate treated in step C and stir evenly, then filter it with a cloth bag, centrifuge the obtained filtrate, and dry the obtained lower sedi...

Embodiment 2

[0021] The preparation method of this copper-based catalyst comprises the following steps:

[0022] A, 70g sodium carbonate is dissolved in water, makes sodium carbonate solution, subsequent use;

[0023] B, first 100g of copper sulfate is dissolved in water at 70°C to prepare a copper sulfate solution, then under stirring conditions, add the sodium carbonate solution prepared in step A to the copper sulfate solution to react, when the reaction solution When the pH value reaches 10, stop adding the sodium carbonate solution, filter, and collect the precipitate produced by the reaction;

[0024] C, the precipitate that B step is made is washed with water, until the aqueous solution of described precipitate checks without sulfate radical with barium chloride;

[0025] D. Add 10 g of zinc oxide to the aqueous solution of the precipitate treated in step C and stir evenly, then filter it with a cloth bag, centrifuge the obtained filtrate, and dry the obtained lower layer sediment ...

Embodiment 3

[0027] The preparation method of this copper-based catalyst comprises the following steps:

[0028] A, 80g of sodium carbonate is dissolved in water to obtain sodium carbonate solution, which is set aside;

[0029] B, first 110g of copper sulfate is dissolved in water at 80°C to prepare a copper sulfate solution, then under stirring conditions, add the sodium carbonate solution prepared in step A to the copper sulfate solution to react, when the reaction solution When the pH value reaches 10, stop adding the sodium carbonate solution, filter, and collect the precipitate produced by the reaction;

[0030] C, the precipitate that B step is made is washed with water, until the aqueous solution of described precipitate checks without sulfate radical with barium chloride;

[0031] D. Add 15g of zinc oxide to the aqueous solution of the precipitate treated in step C and stir evenly, then filter it with a cloth bag, centrifuge the obtained filtrate, and dry the obtained lower sedime...

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Abstract

The invention discloses a method for preparing a copper-based catalyst, belonging to the technical field of catalysts. The method comprises the following steps: dissolving copper sulfate in hot water, thereby obtaining a copper sulfate solution; adding a sodium carbonate solution into the copper sulfate solution, reacting, filtering, collecting a precipitate, and washing the precipitate with water until inspection with barium chloride proves that no sulfate radical exists in the precipitate solution; and adding zinc oxide into the aqueous solution of the precipitate, filtering, centrifugally separating the obtained filtrate, and drying. Compared with a commercially available basic cupric carbonate catalyst at present, the copper-based catalyst prepared by the invention has the advantages of smaller consumption, higher catalytic efficiency and higher repeated utilization frequency.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a preparation method of a copper-based catalyst. Background technique [0002] Camphor has the effects of clearing the orifice, sharpening stagnation of qi, warding off filth, killing parasites and relieving itching, reducing swelling and relieving pain, symptoms such as scabies itching, bruises, toothache. Camphor can be obtained by multi-tower continuous vacuum distillation, combined with freezing, sublimation and other processes, and can also be obtained by isoborneol dehydrogenation and other processes. Wherein, in the process of preparing camphor by isoborneol dehydrogenation, basic copper carbonate is usually added as a catalyst to catalyze the dehydrogenation process of isoborneol. However, the basic copper carbonate catalysts currently on the market have problems such as large dosage, low catalytic efficiency, and poor recycling activity, which makes the preparation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C07C49/437
Inventor 岑潮锋刘建军黄宇平李珊华李炼廖红
Owner WUZHOU PINE CHEM
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