Macroporous oxygen carrier solid with an oxide ceramic matrix, method for the preparation thereof, and use thereof for a chemical-looping oxidation-reduction method
US11717811B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Oct 10, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least one oxide with a melting point higher than 1500° C., such as alumina, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from an aqueous suspension containing precursor oxide grains for the ceramic matrix that have a specific size, by a spray-drying technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.