Preparation method of mesoporous silicon oxide-based silver catalyst and application thereof in carbon monoxide oxidation

A catalyst and mesoporous technology, applied in the field of inorganic nano-catalytic materials, can solve the problems such as the unsatisfactory CO oxidation and purification effect, achieve good industrial application prospects, convenient operation, simple preparation process and equipment
CN101890349BInactive Publication Date: 2012-01-04DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2012-01-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a mesoporous SiO2-based Ag catalyst and application thereof in CO oxidation. The method is characterized by comprising the following steps: preparing an Ag / SiO2 catalyst by a one-step method by using lauryl amine as a template agent; dissolving the lauryl amine in absolute ethyl alcohol, vigorously stirring in a water bath kettle at a certain temperature to enable the lauryl amine to be completely dissolved; adding silicon sources, de-ionized water, formaldehyde and silver nitrate according to a certain ratio, sequence and time interval, continuing stirring for a period of time, washing with de-ionized water, leaching, drying, and calcining to obtain the Ag / SiO2 catalyst with a mesoporous structure; and using the Ag / SiO2 catalyst in a CO low-temperature catalytic oxidation reaction. The preparation method can prepare the Ag / SiO2 catalyst with a mesoporous structure and a high specific surface area, and the prepared Ag / SiO2 catalyst has high CO low-temperature oxidation catalysis activity and good application prospects.
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Description

technical field

[0001] The invention relates to a mesoporous SiO 2 The invention discloses an Ag-based catalyst and a preparation method thereof, and applies it to catalyze the low-temperature oxidation of CO, belonging to the field of inorganic nano-catalytic materials. Background technique

[0002] CO is one of the main pollutants in the air of many industrial environments and indoor environments, especially in fierce battlefields, fire scenes, mine tunnels and other occasions, it is a deadly poison. Therefore, the elimination of CO has extremely important practical significance for the environment and industrial production, and catalytic oxidation is a simple, cheap and effective method. So far, people have mostly studied the use of noble metal catalysts such as Pt, Rh, and Au to catalyze CO oxidation. However, its wide application in industry is limited due to its high price and easy deactivation.

[0003] Silver is relatively cheap, but it is not very effective for C...

Claims

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