Process for preparing catalytic cracking catalysts
US4591576A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1984 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Oct 3, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalytic cracking catalysts and catalytic cracking process wherein the cracking catalysts are prepared by: (i) contacting a mixture of a large pore zeolite and an inorganic oxide matrix at effective conditions of temperature, pH and time with a fluoro salt; and (ii) ammonium exchanging the product of step (i) to provide a catalyst having less than 2.0 percent by weight Na.sub.2 O, based on the weight of the zeolite. Optionally, the product is provided with an effective amount of at least one cation selected from the class consisting of cerium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, lutetium, gadolinium, terbium, dysprosium, holmium, erbium, thulium and ytterbium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.