Mn and Co co-promoted cobaltosic oxide/silicon dioxide catalyst as well as preparation method and application thereof

A technology of cobalt tetroxide and silica, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of narrow temperature window and difficult control of working window, etc. Achieve the effect of low operating window temperature, increased activity and stability, and simple preparation method
CN111167473APending Publication Date: 2020-05-19SHANGHAI NAT ENG RES CENT FORNANOTECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI NAT ENG RES CENT FORNANOTECH
Publication Date
2020-05-19

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Abstract

The invention discloses a Mn and Co co-promoted cobaltosic oxide / silicon dioxide catalyst for removing non-methane total hydrocarbon in total hydrocarbon as well as preparation and application of theMn and Co co-promoted cobaltosic oxide / silicon dioxide catalyst. The catalyst mainly comprises an active component Mn-modified Co3O4 and a Co-modified carrier SiO2, the loading capacity of the activecomponent is 20-30%, the molar ratio of Mn to Co is 1: 10 to 1: 20, and the molar ratio n (Co): n (Si) of Co to Si in the Co-modified SiO2 carrier is 1: 20 to 1: 30. The catalyst is synthesized by twosteps of a hydrolysis method and a coprecipitation method. The modified Co-promoted SiO2 carrier has stronger binding force with the active component, and Mn is introduced into Co3O4, so that the activity and stability of the catalyst are further improved. The preparation method of the catalyst is simple, the temperature of an operation window is low, and the catalyst has very high practical application value for removing non-methane total hydrocarbons in total hydrocarbons.
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Description

technical field

[0001] The invention belongs to the technical field of catalysis and environmental protection, and in particular relates to a cobalt trioxide / silicon dioxide catalyst co-promoted by Mn and Co, its preparation method and application. Background technique

[0002] Non-methane total hydrocarbons (NMHC) refers to the general term for all other volatile hydrocarbons except methane, such as alkanes, alkenes, aromatic hydrocarbons and oxygen-containing hydrocarbon components. When the concentration of NMHC in the environment exceeds a certain level, it will cause direct harm to human health, and many volatile organic compounds have carcinogenic effects on the human body. When non-methane total hydrocarbons produce photochemical smog and ozone through chemical reaction under light conditions, it will cause immeasurable damage to the human environment. Therefore, in recent years, the state has increased the monitoring of NMHC in the environment.

[0003] The current...

Claims

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