Catalyst, method for manufacturing a catalyst, carbon dioxide reduction electrode, laminate, and carbon dioxide reduction apparatus

JP7874970B2Active Publication Date: 2026-06-17SEKISUI CHEMICAL CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
SEKISUI CHEMICAL CO LTD
Filing Date
2020-12-21
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Conventional carbon dioxide reduction catalysts require high firing temperatures, making them difficult to commercialize industrially, and have insufficient conversion efficiency and Faraday efficiency when producing specific compounds like carbon monoxide.

Method used

A catalyst produced by calcining a mixture of a metal derivative, a nitrogen-containing derivative, and a carbon compound, specifically using metals from groups 7 to 12 and nitrogen-containing aromatic rings, with a molar ratio and content optimized to form metal-nitrogen bonds, supported on carbon, and used in a laminate structure with an ion exchange membrane.

Benefits of technology

The catalyst achieves high conversion efficiency and Faraday efficiency for producing carbon monoxide without increasing firing temperatures, enhancing the performance of carbon dioxide reduction electrodes and devices.

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Abstract

The present invention provides a catalyst, a carbon dioxide reduction electrode, and a multilayer body. The catalyst is obtained by firing a mixture containing a metal derivative, a pyridine derivative, and a carbon compound. The carbon dioxide reduction electrode is provided with the catalyst and an electrode substrate to which the catalyst is attached. The multilayer body includes, for example, a first electrode, an ion exchange membrane, and a second electrode in this order, and the first electrode is the carbon dioxide reduction electrode.
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