Modification of the pore structure of metal oxide and mixed metal oxide supports for catalysts synthesis
US7001866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2002 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Jan 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A porous catalyst support having an increased average pore size is produced from a mixed metal oxide material. In accordance with one embodiment, a method for preparing a mixed metal oxide material includes providing a mixed metal oxide precursor containing at least two metals, calcining the mixed metal oxide precursor at a temperature sufficient to form a thermally and mechanically stable mixed metal oxide material, and leaching the mixed metal oxide material in a leach solution with a constituent that dissolves one metal oxide. Preferably, the calcination temperature is approximately between 300° C. and 1300° C. The leaching constituent may be chosen from the group including acidic solutions of HCl, HNO3, H2SO4, H3PO3, and their combinations, or basic solutions of NH3, NaOH, KOH, and their combinations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.