Silica-alumina material containing lamellar structure, its preparation and application thereof
US12391560B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 11, 2022 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Oct 24, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A silica-alumina material, its preparation and application thereof are provided. The silica-alumina material has a SiO2/Al2O3 molar ratio of 0.8-1.5, and has a lamellar structure with an average length of 0.5-2 μm and an average thickness of 30-80 nm, and its calcined form has a specific XRD pattern. The silica-alumina material has the characteristics of large pore volume, two-stage gradient pore channels of mesopores and macropores, as well as high B acid content as in molecular sieve, and shows crystal characteristics of a molecular sieve, and low impurity content, and thus is suitable for use as a carrier for catalytic materials, particularly a carrier for heavy oil hydrogenation catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.