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Preparing method and application of MCM-41 supported CuO-CeO2 nanocrystalline catalyst

A technology of MCM-41 and catalyst is applied in the application field of low-concentration chlorobenzene catalytic combustion, which can solve the problems of low activity and achieve the effects of high activity, uniform dispersion and good durability.

Inactive Publication Date: 2019-05-21
SHAOXING UNIVERSITY
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Problems solved by technology

In the existing research, there is no report on the application of transition metal oxide nanocrystals loaded on MCM-41 in the catalytic degradation of chlorobenzene, and the existing transition metal catalysts have low activity for the catalytic combustion of chlorobenzene. Therefore, there is an urgent need for a highly active catalyst

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  • Preparing method and application of MCM-41 supported CuO-CeO2 nanocrystalline catalyst
  • Preparing method and application of MCM-41 supported CuO-CeO2 nanocrystalline catalyst
  • Preparing method and application of MCM-41 supported CuO-CeO2 nanocrystalline catalyst

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0017] Catalyst preparation

[0018] (1) Preparation of carrier MCM-41: mix 40wt% TEAOH solution and SiO 2 Mix the mixed solution A with a mass ratio of 10:1, stir and mix the obtained mixed solution A with 25wt% CTAC solution and deionized water, and then add SiO 2 A gel was obtained, in which mixed solution A, CTAC solution, deionized water and SiO 2 The mass ratio of the gel is 12.21:20.3:5.94:5.91, then the gel is placed in a Teflon bottle, heated and crystallized at 100°C for 120h, and the solid product obtained after the crystallization is cooled, filtered, and washed is placed at 80°C Dry in an oven for 12 hours, and finally calcinate the dried solid product in air at 550°C for 5 hours to remove the template agent CTAC, and obtain the carrier MCM-41;

[0019] (2)CuO-CeO 2 Preparation of / MCM-41 catalyst: the prepared MCM-41 is dispersed in ...

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Abstract

A preparing method and application of a MCM-41 supported CuO-CeO2 nanocrystalline catalyst are disclosed. The method includes (1) preparing a support MCM-41, and (2) preparing a CuO-CeO2 / MCM-41 catalyst. The catalyst is used for catalytic combustion of low-concentration chlorobenzene. The prepared catalyst has characteristics of small active component dimension and uniform dispersion, has high activity for catalytic chlorobenzene combustion and good durability, and is a VOD degrading catalyst having a good application prospect and excellent performance.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to an MCM-41 loaded CuO-CeO 2 Preparation of nanocrystalline catalyst and its application in catalytic combustion of low concentration chlorobenzene. Background technique [0002] MCM-41 molecular sieve has hexagonal ordered pores, large specific surface area, uniform size, high thermal stability, pore diameter can be continuously adjusted within a certain range, and is suitable as a carrier. In the existing literature, there have been reports on MCM-41 supported noble metal catalysts, but noble metal catalysts may be deactivated due to chlorine poisoning and polychlorinated by-products, and precious metal resources are scarce, so the cost of preparing catalysts very high. In the existing research, there is no report on the application of transition metal oxide nanocrystals loaded on MCM-41 in the catalytic degradation of chlorobenzene, and the existing transition metal catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/76F23G7/07
Inventor 左树锋郑洁陈珠成珍
Owner SHAOXING UNIVERSITY
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