Decationized, dealuminated and stabilized L zeolite and use thereof
US4909924A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1987 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Aug 13, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns a new decationized, dealuminated and stabilized zeolite of L type, characterized particularly by: PA0 a total SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 8, PA0 a potassium content lower than 2.9% by weight, PA0 parameters a and c of the elementary mesh respectively lower than 1.836 nm and 0.754 nm, PA0 a nitrogen adsorption capacity at 77 K, for a partial pressure P/Ps of 0.19, higher than 11% by weight, PA0 a benzene adsorption capacity at 30.degree. C., for a partial pressure P/Ps of 0.25, higher than 8.5% by weight, and PA0 a lattice of mesopores whose radii, measured by nitrogen adsorption-desorption at 77 K according to the BJH method, range from 0.8 nm to 20 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.