Defect engineering and modification of substrates for supported metal/metal oxide catalysts
US11890608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Jan 19, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for fabricating thermally stable reducible metal oxide catalyst support structures on a base material using a multi-step incipient wetness impregnation (IWI) process are disclosed. For example, reducible metal oxide catalyst support structures having high surface area and high thermal stability may be formed using a multi-step IWI process, where the support structure is generated through high-temperature calcination between IWI steps. The metal or metal oxide catalysts fabricated using the methods are also disclosed. The generation of engineered surface defects on reducible metal oxides using a gas reduction process to serve as anchoring sites for metal or metal oxide catalysts is also disclosed. Generating engineered defects through a gas reduction process may be a relatively low-cost and scalable process suitable for fabricating efficient catalysts using a wide range of materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.