CHA-type zeolite and its manufacturing method

By producing CHA-type zeolites with a higher pair aluminum ratio and controlled properties, the method enhances their nitrogen oxide reduction capabilities, addressing limitations in existing zeolites and improving catalyst performance.

JP7803056B2Active Publication Date: 2026-01-21TOSOH CORP
View PDF 4 Cites 0 Cited by

Patent Information

Application Number
JP2021136712
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-08-28
Filing Date
2021-08-24
Publication Date
2026-01-21
Estimated Expiration
2041-08-24

Smart Images

  • Figure 0007803056000003
    Figure 0007803056000003
  • Figure 0007803056000001
    Figure 0007803056000001
  • Figure 0007803056000002
    Figure 0007803056000002
Patent Text Reader

Abstract

To provide: a CHA-type zeolite that has a larger number of pair-aluminum structures as compared to that of conventional CHA-type zeolites; a catalyst containing the CHA-type zeolite; and / or a method for producing the CHA-type zeolite or the catalyst.SOLUTION: A method for producing a CHA-type zeolite includes a step for crystallizing a composition containing an alumina source, a silica alumina source, an alkali source, an organic structure directing agent, and water. The composition is preferably prepared by mixing the alumina source, the alkali source, the organic structure directing agent, and the water, and then blending the mixture with the silica alumina source.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Traveling body operation system

    JP2011234599A

  • Composite membrane having zeolite thin film and production method of the same

    JP2015066532A

  • CHA type zeolite comprising phosphorus and method for producing the same

    JP2017048106A

  • CHA type zeolitic materials and methods for their preparation using cycloalkylammonium compounds

    WO2013182974A1