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Supported tricobalt tetroxide catalyst and its preparation method and application

A tricobalt tetroxide catalyst, technology of tricobalt tetroxide, which is applied in combustion methods, incinerators, combustion types, etc., can solve the problems of reduced catalyst activity and low catalyst activity, and achieve the effects of reduced production, high reactivity, and avoiding high-temperature roasting

Inactive Publication Date: 2016-08-24
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been reported in the literature that Co 3 o 4 / Al 2 o 3 Catalyst, due to high temperature calcination (500 o C) will produce inert CoAl 2 o 4 species, while making Co 3 o 4 / Al 2 o 3 The activity of the catalyst is reduced, and the support Al 2 o 3 The larger the specific surface area, the lower the activity of the resulting catalyst

Method used

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  • Supported tricobalt tetroxide catalyst and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0015] Weigh 0.55g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of deionized water; 1.5 g of γ-Al 2 O 3 Add to the above solution, stir evenly, dropwise add 1 mol / L sodium carbonate (Na 2 CO 3 ) solution to a pH of about 9, react at 50 °C for 1 h, wash with deionized water until neutral, dry at 60 °C, and calcinate at 300 °C for 3 h to obtain 10% Co 3 O 4 / γ-Al 2 O 3 .

Embodiment 2

[0017] Weigh 1.09g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of deionized water; 1.5 g of γ-Al 2 O 3 Add to the above solution, stir evenly, dropwise add 1 mol / L sodium carbonate (Na 2 CO 3 ) solution to a pH of about 9, react at 50 °C for 1 h, wash with deionized water until neutral, dry at 60 °C, and calcinate at 300 °C for 3 h to obtain 20% Co 3 O 4 / γ-Al 2 O 3 .

Embodiment 3

[0019] Weigh 1.64g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of deionized water; 1.5 g of γ-Al 2 O 3 Add to the above solution, stir evenly, dropwise add 1 mol / L sodium carbonate (Na 2 CO 3 ) solution to a pH of about 9, react at 50 °C for 1 h, wash with deionized water until neutral, dry at 60 °C, and calcinate at 300 °C for 3 h to obtain 30% Co 3 O 4 / γ-Al 2 O 3 .

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Abstract

The present invention relates to a kind of supporting type cobalt tetroxide catalyst and its preparation method and application, and described catalyst is based on aluminum oxide (γ-Al 2 o 3 ) as the carrier, cobalt tetroxide (Co 3 o 4 ) is a supported catalyst with an active component, and the content of tricobalt tetroxide is 10%-90%. The method does not require high-temperature calcination, reduces the amount of inert substance CoAl2O4, and improves the propane complete oxidation activity of the loaded tricobalt tetroxide catalyst. The supported type cobalt tetroxide catalyst obtained in the invention can be applied to the complete catalytic oxidation reaction of various hydrocarbons such as C3H8, C3H6, CH4, etc., and has good reactivity.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a supported tricobalt tetroxide catalyst and a preparation method and application thereof. Background technique [0002] Hydrocarbons (HC) are one of the main sources of urban air pollution, and NO x The occurrence of photochemical reactions may lead to photochemical smog pollution and cause more serious impacts on human health and the ecological environment. At the same time, HC, especially low-chain HC, has a very stable structure, and the catalytic combustion reaction temperature is very high. Therefore, the governance of HC is the key and difficult point in today's environmental governance. [0003] Although noble metal palladium and platinum catalysts have good HC catalytic combustion reaction activity, the high cost of catalysts limits their large-scale applications. Cobalt tetroxide (Co 3 O 4 ) of HC catalytic combustion activity is second only to palladium and plat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75F23G7/07
Inventor 何丹农赵昆峰高振源董亚梅王婷
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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