Cross-pore-rich Co-Silicalite-1 catalyst as well as preparation method and application thereof

Co-Silicalite-1 molecular sieves were synthesized by in-situ hydrothermal method. By controlling the placement of Co2+ in the cross channels and recycling the crystallization mother liquor, the problems of uncontrollable Co2+ placement and mother liquor treatment were solved, the utilization rate of active sites of the catalyst and the dehydrogenation performance of ethane were improved, and environmentally friendly and efficient catalyst preparation was achieved.

CN121490810APending Publication Date: 2026-02-10TAIYUAN UNIVERSITY OF TECHNOLOGY
2 Cites 0 Cited by

Patent Information

Application Number
CN202511551535.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-28
Publication Date
2026-02-10

AI Technical Summary

Technical Problem

The existing Silicalite-1 molecular sieve supported Co catalyst has uncontrollable Co2+ placement, low active site utilization, limited ethane dehydrogenation performance, and the treatment of molecular sieve mother liquor is not environmentally friendly.

Method used

Co-Silicalite-1 molecular sieves were synthesized using an in-situ hydrothermal method. TPAOH was used as a structure directing agent to control the preferential landing of Co2+ in the cross channels of the Silicalite-1 molecular sieves. The crystallization mother liquor was recycled as a raw material to reduce the discharge of alkaline waste liquid.

Benefits of technology

This increases the proportion of Co2+ in the cross-channels, improves the utilization efficiency of the active sites of the catalyst and the dehydrogenation performance of ethane, and at the same time achieves efficient recycling of the catalyst, reducing environmental pollution.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121490810A_ABST
    Figure CN121490810A_ABST
Patent Text Reader

Abstract

The invention discloses a Co-Silicalite-1 catalyst rich in cross pores as well as a preparation method and application of the Co-Silicalite-1 catalyst, and belongs to the technical field of dehydrogenation catalysts. According to the catalyst, Co-Silicalite-1 molecular sieve raw powder is synthesized under a hydrothermal condition, and then the molecular sieve raw powder is dispersed in molecular sieve crystallization mother liquor generated in the synthesis process of the molecular sieve raw powder for secondary hydrothermal regulation, so that Co < 2 + > preferentially falls into cross pore channels in the Silicalite-1 molecular sieve; the proportion of Co < 2 + > in a silicalite-1 molecular sieve cross pore channel can be effectively increased through the molecular sieve mother liquor and secondary hydrothermal regulation, so that the utilization efficiency of a confinement Co active site and the EDH catalytic performance are improved; the optimization problems of limited metal active site utilization efficiency, molecular sieve crystallization mother liquor emission pollution and low silicon source / template agent utilization rate are solved, and the method is simple in process and suitable for industrial production.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Embedded catalyst as well as preparation method and application thereof

    CN119633878A

  • Co (at) SP S-1 catalyst and preparation method and application thereof

    CN120286057A