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Alkali treatment method and treatment device for spent aluminum isopropoxide catalyst

A technology of aluminum isopropoxide and waste catalyst, which is applied in chemical instruments and methods, aluminum compounds, alkali metal aluminate/aluminum oxide/aluminum hydroxide preparation, etc., which can solve the loss of useful substances, large odor, and multiple Solve problems such as solid alumina residues, achieve the effect of increasing recycling benefits and simple operation

Active Publication Date: 2019-07-26
齐翔华利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, some by-products and polymers will accumulate during the reaction, so that the deactivated aluminum isopropoxide is mixed with these by-products and polymers to form a very viscous aluminum isopropoxide spent catalyst , for this aluminum-containing mixed product, the industry can only deal with it by incineration at present
The use of incineration treatment not only leads to the loss of useful substances in the mixed product, but also produces more solid alumina residues and relatively large odors, which increases the difficulty of further treatment and also leads to related environmental issues.

Method used

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  • Alkali treatment method and treatment device for spent aluminum isopropoxide catalyst

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Effect test

Embodiment 1

[0028] Take 50g of the mixed product and 200g of 5% sodium hydroxide solution, mix and stir, stir evenly and then let stand to separate layers, the quality of the upper oil phase is 40g, and the lower water phase is 208g. The lower aqueous phase was treated with CO 2 The precipitate obtained after neutralization was washed and dried to obtain 9.57 g of aluminum hydroxide powder.

Embodiment 2

[0030] Take 50g of the mixed product and 100g of 10% sodium hydroxide solution, mix and stir, stir evenly, and then stand for layering. The mass of the upper oil phase is 40g, and the lower layer of water phase is 109g. The precipitate obtained after the lower aqueous phase was neutralized by CO2 was washed and dried to obtain 9.52 g of aluminum hydroxide powder.

Embodiment 3

[0032] Take 50g of the mixed product and 50g of 20% sodium hydroxide solution, mix and stir, stir evenly and then let stand to separate layers, the mass of the upper oil phase is 39g, and the lower layer of water phase is 60g. The precipitate obtained after the lower aqueous phase was neutralized by CO2 was washed and dried to obtain 9.55 g of aluminum hydroxide powder.

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Abstract

The invention relates to the field of petrochemical engineering, in particular to an alkaline treating method of an aluminium isopropoxide waste catalyst and a treating device thereof. According to the method, strong alkaline solutions of sodium hydrate (or potassium hydrate) and the like are taken as alkaline hydrolysis extractants, alkaline hydrolysis extracting is conducted on the input isopropanol aluminum waste catalyst, and separation is conducted on an organic phase and an inorganic phase; useful parts of the separated organic phase are further recovered; pseudo-boehmite with high addedvalue is obtained after the PH value of the separated inorganic phase is adjusted through CO2, and carbonate crystals can be recovered by filtering liquid through a manner of condensed crystallization. By means of the method, the treating problem of wasted catalysts in the reduction production process of unsaturated aldehydes and ketones is solved, certain benefits can be achieved, and the greendegree of the reduction production process of the unsaturated aldehydes and ketones taking the aluminium isopropoxide as a catalyst is improved.

Description

[0001] (1) Technical field [0002] The invention relates to the field of petrochemical industry, in particular to an alkali treatment method for waste aluminum isopropoxide catalyst and a treatment device thereof. [0003] (2) Background technology [0004] As an important chemical raw material, aluminum isopropoxide is often used as a crosslinking agent for adhesives because of its unique physical and chemical properties. agent. In addition, in the field of organic synthesis, aluminum isopropoxide is a highly selective aldehyde and ketone reduction catalyst for unsaturated aldehydes and ketones. Compared with other reduction catalysts, its advantages are very obvious. When reducing unsaturated carbonyl compounds , has high selectivity to carbonyl, the reaction conditions are relatively mild, the reaction is very smooth, and the -NO in the compound 2 , C=C, -COOR and other groups have almost no effect. At the same time, the production process of aluminum isopropoxide is sim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/14C01F7/04C01D7/00
CPCC01D7/00C01F7/0693C01F7/142
Inventor 钱庆安陈新建汪青海李善龙
Owner 齐翔华利新材料有限公司
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