Dehydrogenation catalyst

JP2026020403A5Pending Publication Date: 2026-06-19NITERRA CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
NITERRA CO LTD
Filing Date
2025-12-01
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing methane oxidative coupling catalysts face issues with heat resistance and catalytic activity, particularly when used in large-scale facilities where the exothermic reaction can lead to rapid temperature rises, causing catalyst deactivation.

Method used

A dehydrogenation catalyst composed of a composite oxide with a perovskite-type main phase and a subphase, featuring specific elemental compositions and structures, enhances heat resistance and catalytic activity by promoting oxygen adsorption and maintaining activity at high temperatures.

Benefits of technology

The catalyst improves heat resistance and catalytic activity, allowing for efficient production of hydrocarbons with two or more carbon atoms from methane, even under high-temperature conditions, and supports various dehydrogenation reactions.

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Abstract

We provide a technology to improve the heat resistance of dehydrogenation catalysts. The dehydrogenation catalyst is a compound represented by the general formula (A 1-x A' x )(Zr 1-y-z B y B' z )O 3-δ (wherein A is at least one element selected from alkaline earth metals, A' is at least one element of La and Y, B is at least one element of Ti and Ce, and B' is at least one element selected from Y, Sc, Yb, Al, In, and Nd, satisfying 0≦x≦0.4, 0.3≦(1-z)≦1, 0≦y, 0<(1-yz), and δ represents the amount of oxygen vacancy), and a subphase composed of at least one of three composite oxides represented by the general formulas AB'2O4, A2B'2O5, and A3B'4O9.
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