Silica granules, methods for producing the same, and materials for adsorbing and desorbing acidic gases

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Silica granules with tailored pore distributions enhance amine compound adsorption, addressing the limited capacity of conventional adsorbents and facilitating efficient carbon dioxide recovery.

JP2026078676APending Publication Date: 2026-05-15TAYCA CORP

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Patent Information

Authority / Receiving Office: JP · JP
Patent Type: Applications
Current Assignee / Owner: TAYCA CORP
Filing Date: 2024-10-29
Publication Date: 2026-05-15

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Abstract

The present invention provides a silica granule with excellent adsorption properties for amine compounds, a method for producing the same, and an adsorption / desorption material for acidic gases containing the silica granule. [Solution] The silica granules of the present invention are characterized in that silica is the main component, and the ratio of the total volume of pores with a diameter of 5 nm or less to the total pore volume is 10% or less, the ratio of the total volume of pores with a diameter of 15 nm or more to the total pore volume is 50% or more, and the ratio of the total volume of pores with a diameter of 25 nm or more to the total pore volume is 20% or more. The acidic gas adsorption / desorption material of the present invention is characterized in that it contains the silica granules of the present invention.

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