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Preparation method of high-selectivity methyl isobutyl alcohol

A technology of methyl isobutyl alcohol and methyl isobutyl ketone, which is applied in the field of preparation of highly selective methyl isobutyl alcohol, can solve the problems of high temperature and high pressure in production process conditions, high production cost, and complicated catalyst preparation , to achieve the effects of mild production process conditions, low energy consumption and simple preparation methods

Inactive Publication Date: 2021-06-18
ZHEJIANG JIANYE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the defects of high production cost, complex catalyst preparation and high temperature and high pressure production process conditions of the existing methyl isobutyl alcohol preparation method to provide a simpler process, milder production process conditions, and more The preparation method of the high selectivity methyl isobutyl alcohol that keeps MIBK high conversion rate and MIBC high selectivity under the working condition of heavy load

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present embodiment provides the preparation method of the catalyst used in the present invention, comprises the following steps:

[0035] (1) 200g of alumina, 39.89g of nickel oxide and 228g of deionized water are mixed in a ball rolling machine and rolled into balls.

[0036] (2) Calcining at 600° C. for 4 hours after molding to obtain a nickel oxide-containing carrier.

[0037] (3) According to the water absorption rate of the nickel oxide carrier, 10.6g of copper nitrate and 32.86g of chromium nitrate were loaded onto the surface of the catalyst by an equal impregnation method.

[0038] (4) Finally, the finished catalyst is obtained after being reduced for 20 hours under hydrogen at a temperature of 450°C.

[0039] (5) The finished catalyst is calculated by mass percentage, nickel accounts for 16%, copper accounts for 2%, chromium accounts for 4%, alumina carrier accounts for 78%, and its number is JYA-1.

Embodiment 2

[0041] The present embodiment provides the preparation method of the catalyst used in the present invention, comprises the following steps:

[0042](1) 200g of alumina, 51.85g of nickel oxide and 239g of deionized water are mixed in a ball rolling machine and rolled into balls.

[0043] (2) Calcining at 550° C. for 6 hours after molding to obtain a nickel oxide-containing carrier.

[0044] (3) According to the water absorption rate of the nickel oxide carrier, 16.53g of copper nitrate and 17.09g of chromium nitrate were loaded onto the surface of the catalyst by an equal impregnation method.

[0045] (4) Finally, the finished catalyst is obtained after being reduced for 20 hours under hydrogen at a temperature of 450°C.

[0046] (5) The finished catalyst is calculated by mass percentage, nickel accounts for 20%, copper accounts for 3%, chromium accounts for 2%, alumina carrier accounts for 75%, and its number is JYA-2.

Embodiment 3

[0048] The present embodiment provides the preparation method of the catalyst used in the present invention, comprises the following steps:

[0049] (1) 200g of alumina, 59.41g of nickel oxide and 246g of deionized water were mixed in a ball rolling machine and rolled into balls.

[0050] (2) Calcining at 700° C. for 4 hours after molding to obtain a nickel oxide-containing carrier.

[0051] (3) According to the water absorption rate of the nickel oxide carrier, 22.96g of copper nitrate and 17.80g of chromium nitrate were loaded onto the surface of the catalyst by an equal impregnation method.

[0052] (4) Finally, the finished catalyst is obtained after being reduced for 20 hours under hydrogen at a temperature of 450°C.

[0053] (5) The finished catalyst is calculated by mass percentage, nickel accounts for 22%, copper accounts for 4%, chromium accounts for 2%, alumina carrier accounts for 72%, and its number is JYA-3.

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Abstract

The invention relates to a preparation method of high-selectivity methyl isobutyl alcohol, which has the advantages of mild process conditions, high product selectivity and high raw material conversion rate. The reaction is carried out in a gas-solid phase fixed reactor, the raw material methyl isobutyl ketone is gasified, and then the gasified raw material methyl isobutyl ketone and hydrogen are subjected to hydrogenation reaction under the action of a catalyst to prepare the methyl isobutyl alcohol. Compared with the prior art, the method has the characteristics of mild process conditions, high product selectivity and high conversion rate of raw materials, the conversion rate of the methyl isobutyl ketone is greater than 99.50%, and the product selectivity of the methyl isobutyl alcohol is greater than 99.7%.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis and relates to the synthesis of methyl isobutyl alcohol, in particular to a method for preparing highly selective methyl isobutyl alcohol with mild process conditions, high product selectivity and high conversion rate of raw materials. Background technique [0002] Methyl isobutyl carbinol (MIBC) is an excellent medium boiling point solvent with a wide range of uses and can be used as a solvent for dyes, petroleum, rubber, resin, paraffin, nitrocellulose and ethyl cellulose; Used as raw material for brake fluid and organic synthesis; used as mineral flotation agent, such as extracting silicon and copper sulfate ore; used as an inert solvent for nitrocellulose paint, which can increase the gloss and smoothness of the paint, and improve the redness performance; in lubrication It is used as a solvent in the manufacture of oil additives, etc. [0003] With the continuous increase of product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/145C07C31/125B01J23/86B01J37/08B01J37/02B01J37/18
CPCC07C29/145B01J23/868B01J23/002B01J37/08B01J37/0201B01J37/18
Inventor 冯烈曹伟富余婉凤李东陈云斌龚成菊邹雪梅赵素粉
Owner ZHEJIANG JIANYE CHEM
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