Cu-Al/Ce-Al complex oxide combustion catalysts, their preparation and use
US6596249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Sep 20, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to non-noble metal combustion catalyst for carbon monoxide comprising Cu—Al/Ce—Al complex oxides and aluminum oxide support. The catalysts comprise Ce—Al complex oxide and Cu—Al complex oxide successively loaded on the aluminum oxide support, wherein the loading weight ratio is 0.02-0.10 for Ce—Al—O/Al2O3 and 0.05-0.15 for Cu—Al—O/Al2O3, and the Cu—Al complex oxide is dispersed in cluster form on the surface of the aluminum oxide support pre-covered with high dispersed nanoparticles of the Ce—Al complex oxide. Furthermore, the present invention relates to a process for preparing the catalysts and their use as combustion promoter with high catalytic activity, high hydrothermal stability and ability of reducing NOx exhaust in the fluid catalytic cracking (FCC) process of petroleum refining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.