Process for catalytic CO2 desorption and supported catalyst for the process

A supported Zr-based catalyst addresses the high energy consumption and catalyst dissolution issues in CO2 capture by enhancing desorption rates and stability, leading to more efficient and cost-effective CO2 capture processes.

JP2026523191APending Publication Date: 2026-07-13TOTALENERGIES ONETECH
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Patent Information

Application Number
JP2025574478
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-06-28
Filing Date
2024-06-27
Publication Date
2026-07-13

AI Technical Summary

Technical Problem

Existing CO2 capture technologies, particularly amine-based post-combustion capture (PCC), face high energy consumption and catalyst dissolution issues during the desorption process, limiting their efficiency and economic viability.

Method used

Development of a supported Zr-based catalyst, preferably containing ZrO(OH)2, which is synthesized at a specific pH and deposited on a high-surface-area support, enhancing catalytic activity and stability, allowing for CO2 desorption at lower temperatures and reducing energy requirements.

Benefits of technology

The supported Zr-based catalyst significantly increases CO2 desorption rates at low temperatures, reduces energy costs, prevents solvent degradation, and facilitates catalyst separation, thereby improving the efficiency and cost-effectiveness of CO2 capture processes.

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Abstract

The present invention relates to a process for CO2 desorption in an overall CO2 absorption / desorption procedure. In particular, the present invention relates to a process and system for a catalytic CO2 desorption step in the presence of at least one supported Zr-based catalyst. The present invention also relates to suitable supported Zr-based catalysts for CO2 desorption processes and methods for preparing such catalysts.
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