Silicon substituted EMC-2 zeolite: LZ-281
US5985782A · kind A · utility
5Cited by
5References
2Claims
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Key dates
| Filing date | Feb 19, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Feb 19, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Applicants have prepared a novel zeolite identified as LZ-281. This zeolite has the framework topology of zeolite EMT. The LZ-281 zeolite is prepared by removing framework aluminum atoms from EMC-2 zeolite while simultaneously replacing the aluminum atoms with extraneous silicon atoms. This increases the SiO.sub.2 /Al.sub.2 O.sub.3 ratio versus the starting EMC-2 zeolite and results in the LZ-281 zeolite having increased thermal stability, increased number and/or strength of acid sites and increased activity in hydrocarbon processes requiring strong acid sites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.