Cumene oxidizing reaction catalyst and preparing method and application thereof

An oxidation reaction and catalyst technology, applied in the preparation of peroxy compounds, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of high cost and low selectivity, and achieve the manufacturing cost Low, high selectivity, less by-products

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a catalyst for cumene oxidation reaction and its preparation method and application in view of the technical deficiency of low selectivity or high cost of existing catalysts in cumene oxidation reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Dissolve 2g of copper nitrate in 8g of deionized water and add it to 10g of nanometer alkaline earth metal oxide MgO. The mass ratio of copper nitrate aqueous solution to nanometer alkaline earth metal magnesium oxide is 1:1. Then place the catalyst in an ultrasonic instrument, vibrate at 40°C for 24h, then dry it in a drying oven at 120°C for 24h, and roast the dried sample at 550°C for 6h to obtain a CuO / MgO catalyst with a pore size of 2nm . According to the method described in Comparative Example 1, the catalytic performance of the catalyst for cumene oxidation was investigated. The analysis results of the reaction product were: the conversion rate of cumene was 27.5%, and the selectivity of cumene hydroperoxide was 92.3%.

Embodiment 2

[0038] Dissolve 2g of copper nitrate in 8g of deionized water and add it to 10g of nanometer alkaline earth metal oxide MgO. The mass ratio of copper nitrate aqueous solution to nanometer alkaline earth metal magnesium oxide is 1:1. Then place the catalyst in an ultrasonic instrument, vibrate at 40°C for 48h, then dry it in a drying oven at 120°C for 24h, and roast the dried sample at 550°C for 6h to obtain a CuO / MgO catalyst with a pore size of 5nm . According to the method described in Comparative Example 1, the catalytic performance of the catalyst for cumene oxidation was investigated. The analysis results of the reaction product were: the conversion rate of cumene was 27.9%, and the selectivity of cumene hydroperoxide was 93.0%.

Embodiment 3

[0040] Dissolve 2g of copper nitrate in 8g of deionized water and add it to 10g of nanometer alkaline earth metal oxide MgO. The mass ratio of copper nitrate aqueous solution to nanometer alkaline earth metal magnesium oxide is 1:1. Then place the catalyst in an ultrasonic instrument, vibrate at 40°C for 96h, then dry it in a drying oven at 120°C for 24h, and roast the dried sample at 550°C for 6h to obtain a CuO / MgO catalyst with a pore size of 4nm . According to the method described in Comparative Example 1, the catalytic performance of the catalyst for cumene oxidation was investigated. The analysis results of the reaction product are: the conversion rate of cumene is 28.5%, and the selectivity of cumene hydroperoxide is 91.6%.

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Abstract

The invention relates to a cumene oxidizing reaction catalyst and a preparing method and application thereof. The catalyst is nano alkaline earth metal oxide which an auxiliary is added, and the catalyst aperture is of 2-30 nm mesoporous structure; the auxiliary is one of CuO, MnO2, Co3O4, NiO, Cr2O3, ZnO and Fe2O3. The catalyst is nano alkaline earth metal oxide prepared through a hydrothermal synthesis method, and the auxiliary is added to the nano alkaline earth metal oxide, and then an ultrasonic impregnation method is used. The catalyst can be applied to cumene oxidizing reaction, according to the reaction condition, one gram of cumene reaction liquid contains 0.005-0.01 g of catalyst, the gas flux is 100-800 ml/min, the oxygen volume fraction is 20-80%, and the reaction temperature is 70-110 DEG C. The catalyst prepared through the method is high in activity, selectively, mild in reaction condition, high in economy and capable of being used in industrial production.

Description

technical field [0001] The present invention relates to a catalyst for the oxidation reaction of cumene and its preparation method and application, more specifically to the preparation of a nano-alkaline earth metal oxide catalyst with additives and its method for producing cumene hydroperoxide . Background technique [0002] The oxidation of cumene to cumene hydroperoxide (CHP) is a key step in the industrial production of phenol. At present, about 95% of phenol in the world is produced by the cumene method. In addition to being used for the synthesis of phenol, cumene hydroperoxide can also be widely used as an olefin epoxidation reagent and as an initiator for chain free radical reactions. With the further development of the phenol industry, the demand for cumene hydroperoxide is increasing year by year. [0003] The cumene oxidation process in the traditional industry mostly adopts the air autoxidation method, and only a small amount of CHP is added as the initiator. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J23/34B01J23/75B01J23/78B01J23/755B01J23/26B01J23/06B01J23/745C07C409/02C07C407/00
Inventor 吴美玲周灵杰赵克品
Owner CHINA PETROLEUM & CHEM CORP
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