Electrochemical system, apparatus and method to generate metal hydroxide in the presence of metal silicates
US12264403B2 · kind B2 · utility
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12References
20Claims
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Key dates
| Filing date | Apr 28, 2021 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Jun 28, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method are provided for the electrochemical production of hydrogen, oxygen and metal hydroxide wherein the metal is derived from a metal silicate. The process involves the electrolysis of a metal salt solution where hydrogen and a metal hydroxide are produced at the cathode, and oxygen, or chlorine, and an acid are produced at the anode. The acid is reacted with a metal silicate producing a soluble metal salt and water that is used in turn to make solid or dissolved metal hydroxide. The net CO2 and acid gas emissions of the invention and its products may therefore be significantly reduced or turned negative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.