Acid extraction of molecular sieve catalysts to improve ethylene yield
US5475182A · kind A · utility
39Cited by
23References
20Claims
0Family size
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Key dates
| Filing date | Jul 27, 1993 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Jul 27, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for enhancing ethylene yield in the conversion of oxygenates to olefins that involves extracting molecular sieve catalysts, such as silicoaluminophosphate catalysts, with a mineral acid is provided. Acid extraction is thought to alter the crystallinity of the molecular sieve catalyst and thereby improve ethylene yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.