Metallo aluminophosphate molecular sieve with cubic crystal morphology and methanol to olefin process using the sieve
US6207872A · kind A · utility
13Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | May 6, 2019 |
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 predominantly a plate crystal morphology in which the average smallest crystal dimension is at least 0.1 microns and has an aspect ratio of no greater than 5. 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.