A supported noble metal catalyst and its preparation method and application

Through the preparation of supported precious metal catalysts, the problem of existing catalysts having unsatisfactory removal effects on short-chain hydrocarbons has been solved, and efficient oxidation catalysis of hydrocarbons such as ethylene and propane has been achieved, thereby reducing production costs and extending the service life of the catalyst.

CN118743990BActive Publication Date: 2025-09-05JIANGSU LONGYUAN CATALYST CO LTD +1
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Patent Information

Application Number
CN202410820013.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-24
Publication Date
2025-09-05
Estimated Expiration
2044-06-24

AI Technical Summary

Technical Problem

The removal effect of existing catalysts on short-chain hydrocarbons is not ideal, especially in the coal chemical industry, the catalytic effect on the oxidation of hydrocarbons such as ethylene and propane is not ideal.

Method used

By using a supported precious metal catalyst, a coating is prepared by selecting a suitable carrier and a combination of active component precursor, auxiliary agent precursor, binder and dispersant to improve the redox performance and anti-toxicity of the catalyst and enhance the adhesion between the active component and the carrier.

Benefits of technology

It improves the catalytic activity and service life of the catalyst, reduces the production cost, and is suitable for the removal of low-concentration organic small molecule hydrocarbons with large air volume, especially for the purification of flue gases such as ethylene and propane.

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Abstract

The present invention relates to the field of catalyst technology, discloses a supported noble metal catalyst and its preparation method and application, the catalyst includes a first carrier and a coating loaded on the first carrier, the raw material composition for preparing the coating includes a second carrier, an active component precursor, an auxiliary agent precursor, a binder and a dispersant; the first carrier is cordierite, mullite or cordierite-mullite; the second carrier is titanium dioxide and / or aluminum oxide; the active component precursor is selected from at least one of a platinum precursor, a palladium precursor and a rhodium precursor; the auxiliary agent precursor is a combination of a cerium precursor, a zirconium precursor and a neodymium precursor; the binder is a mixture of an organic binder, an inorganic binder and a coupling agent. The supported noble metal catalyst has low production cost, high catalytic activity, strong anti-poisoning ability and long service life, can be used for the removal of volatile organic compounds, and is particularly suitable for the removal of flue gases such as ethylene and propane with large air volume and low concentration of organic small molecule hydrocarbons.
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