Process for synthesizing a zeolite catalyst on a pH controlled basis to improve catalyst life
US4804800A · kind A · utility
29Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Nov 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a zeolite, e.g. ZSM-5, under controlled conditions of initial pH adjustment with an acid, SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio, and in the presence of sodium cations, is disclosed, as well as a process for using the same to synthesize olefins from methanol and/or dimethyl ether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.