Metallo aluminophosphate molecular sieve with novel crystal morphology and methanol to olefin process using the sieve
US5912393A · kind A · utility
42Cited by
10References
21Claims
0Family size
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Key dates
| Filing date | Dec 9, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Dec 9, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for converting methanol to light olefins along with the process itself are disclosed and claimed. The catalyst is a metalloaluminophosphate molecular sieve having the empirical formula (EL.sub.x Al.sub.y P.sub.z)O.sub.2 where EL is a metal such as silicon or magnesium and x, y and z are the mole fractions of EL, Al and P respectively. The molecular sieve has a crystal morphology in which the average smallest crystal dimension is at least 0.1 microns. Use of this catalyst gives a product with a larger amount of ethylene versus propylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.