Hydrogen separation
The composite membrane with a graphene oxide intermediate layer addresses inefficiencies in hydrogen separation by enhancing purity and reducing costs, achieving high permeability and stability for industrial use.
JP2026524766APending Publication Date: 2026-07-24SAUDI ARABIAN OIL CO
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SAUDI ARABIAN OIL CO
- Filing Date
- 2024-05-28
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
Existing hydrogen separation technologies are inefficient, costly, and fail to achieve high purity due to the use of expensive metals and inability to block impurities, necessitating improved methods for industrial-scale hydrogen separation.
Method used
A composite membrane comprising a porous substrate with a multilayer film structure, including a graphene or graphene oxide intermediate layer between catalyst metal layers, which selectively allows hydrogen passage while blocking larger compounds, reducing metal usage and enhancing purity.
Benefits of technology
The composite membrane achieves high hydrogen permeability and purity, reduces manufacturing costs, and extends operational life through improved thermal and chemical stability, suitable for industrial applications.
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Figure 2026524766000001_ABST
Abstract
The apparatus includes a porous substrate and a multilayer film. The porous substrate has a pore structure configured to allow the diffusion of hydrogen molecules through the porous substrate. The multilayer film is configured to dissociate hydrogen molecules into at least one of hydrogen atoms and protons in response to contact with hydrogen molecules present in a gas stream. The multilayer film is configured to allow the passage of hydrogen atoms or protons through the multilayer film while blocking the passage of compounds larger than hydrogen molecules that may be present in the gas stream. After passing through the multilayer film, the hydrogen atoms or protons combine to reform hydrogen molecules. The multilayer film includes a first metal layer, an intermediate layer, and a second metal layer.
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