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Catalyst and production for oxidizing ethyle alkyl by oxygen

An oxygen oxidation and catalyst technology, which is applied in the directions of oxidation reaction preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high price, complex synthesis, complex process, etc., and achieves low price, simple preparation and high activity. Effect

Inactive Publication Date: 2006-03-15
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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AI Technical Summary

Problems solved by technology

[0003] At present, most of the catalyst systems used in the oxidation of cyclohexane are supported silicon-aluminum catalysts or molecular sieve catalysts. The synthesis is complicated and expensive, and the process used is complicated and the pollution is serious.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 1 g of unbaked copper pyrophosphate catalyst, react with 50 g of cyclohexane, 13.0 atm of oxygen, and react at 150° C. for 5 h. The yield of cyclohexanol and cyclohexanone is 3.54%, alcohol / ketone = 1.32, the total selectivity of alcohol and ketone is 93.6%, trace alkenes.

Embodiment 2

[0017] Calcinate copper pyrophosphate at 300°C for 10h, weigh 1g, react with 50g of cyclohexane, 13.0atm oxygen, and react at 150°C for 5h. The yield of cyclohexanol and cyclohexanone is 3.93%, alcohol / ketone=1.51, the total selectivity of alcohol and ketone is 94.3%, and there are traces of alkene.

Embodiment 3

[0019] Copper pyrophosphate was roasted at 550°C for 5h and weighed 1g, 51g of cyclohexane, 13.0atm oxygen, and reacted at 150°C for 5h. The yield of cyclohexanol and cyclohexanone is 10.4%, alcohol / ketone=1.31, the total selectivity of alkenes, alcohols and ketones is 97.2%, and alkenes account for 2.8%.

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Abstract

A catalyst for oxidizing cyclohexane by oxygen gas to prepare cyclohexene, cyclohexanol and cyclohexone is prepared from the copper pyrophosphate as substrate (prepared according to the Chinese patent whose opplication number is 200510016557.5) through treating and modifying. Its advantages are high output rate of products and high activity, selectivity and stability.

Description

technical field [0001] The invention belongs to a catalyst and a preparation method thereof, in particular to a catalyst used for oxygen oxidation of cyclohexane with copper pyrophosphate as a parent and a preparation method thereof. Background technique [0002] The selective oxidation of cyclohexane to cyclohexanol and cyclohexanone has always been a hot spot in production and research, because it not only involves the activation of saturated carbon-hydrogen bonds, but also the target product is a very important industrial raw material. The main intermediates of fine chemicals such as acids and pharmaceuticals and coatings. In addition, cyclohexene, one of the products, can not only be continuously oxidized to generate cyclohexanone, but also directly oxidized to generate adipic acid. In the traditional production process of cyclohexanol and cyclohexanone, due to the high stability of cyclohexane, the product alcohols and ketones are relatively active. Therefore, under th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18C07C29/48C07C35/08C07C49/21
Inventor 杨向光熊永莲李静叶兴凯远松月吴越
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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