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A kind of method of olefin epoxidation

A technology of epoxidation and nitrous oxide, which is applied in the direction of organic chemistry, can solve the problems of complex olefin epoxidation process, poor treatment effect, environmental pollution, etc., and achieve low cost, pollution prevention, and avoidance of secondary emissions. Effect

Active Publication Date: 2017-10-17
昌德新材科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of poor nitrous oxide treatment effect, complex olefin epoxidation process, high cost, and serious environmental pollution in the prior art, and provide a new method for olefin epoxidation

Method used

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  • A kind of method of olefin epoxidation
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  • A kind of method of olefin epoxidation

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preparation example Construction

[0039]The preparation method of Fe-ZSM-5 modified by potassium chloride is as follows: According to "The influence of high temperature roasting treatment on the performance of Fe-ZSM-5 molecular sieve" (Zhang Xianguo, Guo Quanhui, Li Jianwei, Li Yingxia, Na Yingzi, Henan University Journal (Nature Science Edition), 2007, 37 (4): 366-370) prepared after adding potassium chloride in proportion.

[0040] Nitrous oxide was purchased from Hunan Huazhong Special Gas Co., Ltd., with a purity of 99.995% by volume.

Embodiment 1

[0042] Add helium, 1-pentene and nitrous oxide at a molar ratio of 3:2:1 to Fe-SBA-15 modified with potassium chloride (the molar ratio of K to Fe is 5.0, and the loading of iron The amount is 1.0% by weight of Fe-SBA-15, SiO 2 / Al 2 o 3 In a fixed fluidized bed reactor with a molar ratio of 10), the reaction temperature is controlled at 350°C, the pressure is controlled at normal pressure, and the total volume space velocity of the feed is 3000h -1 , thus producing 1,2-epoxypentane.

Embodiment 2

[0044] Add helium, cyclohexene, and nitrous oxide at a molar ratio of 6:4:1 to Fe-SBA-15 modified with potassium chloride (the molar ratio of K to Fe is 5.0, and the loading amount of iron 1.0% by weight of Fe-SBA-15, SiO 2 / Al 2 o 3 In a fixed fluidized bed reactor with a molar ratio of 10), the reaction temperature is controlled at 350°C, the pressure is controlled at normal pressure, and the total volume space velocity of the feed is 3000h -1 , thus producing 1,2-epoxycyclohexane.

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Abstract

The invention provides an olefin epoxidation method, which is characterized in that nitrous oxide and olefin are contacted with a catalyst. According to the method, nitrous oxide has high conversion rate, in the provided method, a residual material containing carrying gas and unreacted nitrous oxide is processed in a simple mode, and is introduced in a reactor for reaction, so that nitrous oxide generated from industry can be processed according to the method, olefin epoxidation is carried out, hydrogen peroxide usage is avoided, and epoxides with high selectivity can be generated.

Description

technical field [0001] The invention relates to a method for epoxidation of olefins. Background technique [0002] Nitrous oxide (Nitrous Oxide), also known as laughing gas, is a gas with a greenhouse effect and one of the six greenhouse gases stipulated in the Kyoto Protocol. Compared with carbon dioxide, although the content of nitrous oxide in the atmosphere is very low, its single-molecule warming potential is 310 times that of carbon dioxide. Therefore, the effect on the global greenhouse effect is becoming more and more obvious. With the increase of the concentration of nitrous oxide in the atmosphere, it has caused great concern in various regions and countries around the world. However, in the industrial production of adipic acid, a large amount of N will be produced as a by-product. 2 O, direct discharge will cause serious damage to the environment. [0003] Nitrous oxide is a colorless, sweet-smelling gas that is harmless to the human body and has a slight anest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D303/04C07D301/03
CPCC07D301/03C07D303/04
Inventor 蒋卫和袁年武林民郑宏翠何嘉勇屈铠甲肖海军王德清彭鹏祥彭焕英梁毅杨浴姜红军舒兴田
Owner 昌德新材科技股份有限公司