Macroporous oxygen carrier solid with a refractory feldspar/feldspathoid, method for the preparation thereof, and use thereof in a chemical-looping oxidation-reduction method
US11071971B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Jun 23, 2038 |
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 at least one feldspar or feldspathoid with a melting point higher than 1500° C., such as celsian, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from a precursor of the ceramic matrix, obtained from a macroporous zeolitic material with zeolite crystals of a specific size, and a precursor of the oxidation-reduction active mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.