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Preparation method of isopropanol

A technology of isopropanol and acetone, which is applied in the field of preparing isopropanol, can solve the problems of harsh reaction conditions and expensive catalysts, and achieve the effects of mild reaction conditions, good technical effects and low price

Active Publication Date: 2015-02-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing technology of hydrogenation of acetone to prepare isopropanol has the problems of expensive catalyst and harsh reaction conditions, and a new method for preparing isopropanol is provided

Method used

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  • Preparation method of isopropanol
  • Preparation method of isopropanol

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Experimental program
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Effect test

Embodiment 1

[0015] Catalyst 1: will be made of 5.0g Mg(NO 3 ) 2 .6H 2 A solution composed of O and 10.0 g of water is impregnated on 10.0 g of alumina powder by equal-volume impregnation, then dried at 120 ° C, and roasted at 1100 ° C to obtain a catalyst carrier, which is mixed with 50.0 g of water and beaten to obtain slurry I , the solution composed of 18.0g nickel nitrate hexahydrate solution, 68.0g sodium carbonate and 100.0g water will be dropped into the slurry I for reaction at the same time. After aging for 2 hours, the precipitate was washed and filtered, dried at 120°C for 12 hours, calcined at 400°C for 4 hours, and then pressed into tablets to obtain Catalyst 1, which was composed of 30%NiO-5%MgO-65%Al 2 o 3 . At a reaction temperature of 120-150°C, a reaction pressure of 1.0-3.0 MPa, and a total space velocity of liquid phase volume of raw materials (25% acetone, 75% isopropanol) is 2.0 h -1 , under the reaction condition that the molar ratio of hydrogen to acetone is 4...

Embodiment 2～10

[0017] Catalysts 2-10 were prepared according to the steps in Example 1, except that the composition and preparation conditions of the catalysts were changed. The preparation conditions and composition of the catalysts are shown in Table 1. The results of the acetone hydrogenation reaction are shown in Table 2.

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Abstract

The invention relates to a method for preparation of isopropanol through gas phase hydrogenation of acetone, and aims to mainly solve the problems that catalysts are expensive and reaction conditions are demanding during isopropanol production in the prior art. The method of the invention adopts a technical scheme composed of: taking acetone and hydrogen as raw materials, using isopropanol as a solvent, and under the conditions of a molar ratio of hydrogen to acetone of 1:0.04-1, a reaction temperature of 100-180DEG C, a reaction pressure of 0.1-5.0MPa, and a total liquid space velocity of 0.5-4.0h<-1>, contacting the raw materials with a catalyst for reaction to generate isopropanol. Specifically, the catalyst comprises the following components by weight: a) 10.0-40.0% of NiO; b) 55.0-80.0% of Al2O3; and c) 1.0-10.0% of an assistant selected from at least one of La2O3, MgO, ZnO, BaO, CeO2 or CaO. The technical scheme of the invention well solves the problems, and can be used in the industrial production of isopropanol through hydrogenation of acetone.

Description

technical field [0001] The invention relates to a method for preparing isopropanol, in particular to a method for preparing isopropanol by hydrogenating acetone. Background technique [0002] Phenol is a widely used chemical raw material, which is mainly prepared by coal tar extraction method, benzene sulfonation alkali fusion method, chlorobenzene hydrolysis method, toluene-benzene sulfonation method, cumene method and the "Spam method" developed by shell company . At present, 80% of the world's phenol-acetone production uses the cumene production process, while about 98% of the production process in my country uses the cumene method. The production of phenol by the cumene method mainly uses propylene as the raw material. Using this process, for every ton of phenol produced, about 0.62 tons of acetone will be co-produced. In recent years, in order to meet the growing demand for phenol, many phenol manufacturers at home and abroad have expanded or built new production faci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/10C07C29/145B01J23/755B01J23/78B01J23/83B01J23/80
Inventor 王辉刘仲能王德举侯闽渤
Owner CHINA PETROLEUM & CHEM CORP
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