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Nonmetal composite catalytic system for selectively catalytic oxidation of olefin

A selective oxidation and catalytic system technology, applied in the direction of refining oxygen-containing compounds, can solve the problems of high reaction temperature, many by-products, and low product selectivity, and achieve mild reaction conditions, wide application range, and excessive oxidation of by-products little effect

Inactive Publication Date: 2005-09-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

These methods often have the shortcomings of high reaction temperature, low conversion rate of raw materials, low product selectivity, and many by-products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: ethylbenzene air oxidation

[0016] In a 250 ml three-neck flask, put 100 ml of ethylbenzene, 1.6 g of N-hydroxyphthalimide and 15.7 g of 1-fluoro-9,10-anthraquinone; heat it up to 80C while stirring, and use the insertion reaction Air guide pipe in the liquid is continuously fed into air, and the air flow rate is 50 ml / min, and more than air is discharged from the serpentine condensing tube, reacted for 15 hours, and analyzed the product composition with a gas chromatograph. As a result, the conversion of ethylbenzene was 45.1%, the selectivity of acetophenone was 60.3%, the selectivity of 1-phenylethanol was 15.5%, and the selectivity of 1-phenylethylhydroperoxide was 24.1%.

Embodiment 2

[0017] Embodiment 2: Oxygen oxidation of ethylbenzene

[0018] In a 250 ml autoclave, put 50 ml of ethylbenzene, 2.0 g of N-hydroxyphthalimide and 1.0 g of 2-ethyl-9,10-anthraquinone; When the internal temperature was 80°C, feed oxygen until the oxygen pressure in the kettle reached 0.5MPa, react for 5 hours, and analyze the composition of the product with a gas chromatograph. As a result, the conversion of ethylbenzene was 38.3%, the selectivity of acetophenone was 52.3%, the selectivity of 1-phenylethanol was 11.5%, and the selectivity of 1-phenylethylhydroperoxide was 36.1%.

Embodiment 3

[0019] Embodiment 3: Oxygen oxidation of ethylbenzene

[0020] Ethylbenzene was oxidized in the same manner as in Example 2, except that the quinone compound was used. The reaction results are shown in Table 1. In the product distribution of Table 1, ketone represents acetophenone, alcohol represents 1-phenethyl alcohol, and over represents 1-phenylethyl hydroperoxide.

[0021] make up

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Abstract

A non-mental catalytic system for hydrocarbons catalytic selective oxidation, the bi-component non-metal catalytic system for hydrocarbons selective oxidation comprises organic quinones compounds and N-hydroxy-phthalimide . Air or oxygen gas is the source of oxygen, generating alcohols, aldehydes, ketones, acids and alkyl hydrogen peroxide oxygen-containing compounds. The said quinones compounds includes organic compound benzene quinones, naphthalene quinones, anthracene quinones and their substitutive derivatives.

Description

technical field [0001] The invention relates to a non-metallic composite catalytic system for catalytic selective oxidation of hydrocarbons, that is, a non-metallic composite catalytic system composed of two organic compounds, specifically, it is composed of quinones or can generate quinones under oxygen conditions. The diphenolic organic compound of the class compound acts as a catalyst in synergy with N-hydroxyphthalimide. Under the action of this catalytic system, hydrocarbons can be selectively oxidized with air or oxygen to generate oxygen-containing compounds such as alcohols, aldehydes, ketones, acids and alkyl hydroperoxides. Background technique [0002] Organic oxygenates include alcohols, aldehydes, ketones, acids, and alkyl hydroperoxides, which are fine organic products with a wide range of uses. There are many production methods for these types of compounds, among which, the hydrocarbons, which are cheap and widely sourced petrochemical products, are used as r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G27/04
Inventor 徐杰杨贯羽仝新利
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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