Claims
- 1. A process for converting a methanol-containing feed to an olefin-containing hydrocarbon product having a propylene:ethylene weight ratio of at least 35.1:6.4, said process comprising contacting said methanol-containing feed in a reaction zone under methanol conversion conditions with a ZSM-12 zeolite catalyst modified by incorporation thereinto of a minor amount of a modifier selected from magnesium oxide, manganese oxide and a combination of both magnesium oxide and manganese oxide.
- 2. A process according to claim 1 wherein said catalyst contains from about 0.1% to 10% by weight magnesium, calculated on the basis of the elemental metal.
- 3. A process according to claim 1 wherein said catalyst contains from about 0.1% to 10% by weight manganese, calculated on the basis of the elemental metal.
- 4. A process according to claim 1 wherein said catalyst contains from about 0.1% to 10% by weight magnesium and from about 0.1% to 10% by weight manganese, calculated on the basis of the elemental metals.
- 5. A process according to claim 1 wherein said methanol conversion conditions include a reaction temperature of from about 400.degree. C. to 450.degree. C. and a pressure of from about 5.times.10.sup.5 N/m.sup.2 to 10.sup.6 N/m.sup.2.
- 6. A process according to claim 1 wherein said methanol conversion conditions include a weight hourly space velocity for the organic reactants of the methanol-containing feed of from about 0.1 to 30.
- 7. A process according to claim 1 wherein water is cofed to the reaction zone in an amount of from about 1 to 20 moles of water per mole of organic reactants.
- 8. A process according to claim 7 wherein the weight hourly space velocity of water co-fed to the reaction zone ranges from about 1 to 20.
- 9. A process according to claim 1 wherein said catalyst further comprises a binder for said zeolite.
- 10. A process according to claim 1 wherein said weight ratio of propylene:ethylene is no greater than 39.3:0.7.
- 11. A process according to claim 1 wherein said magnesium of said magnesium oxide and/or said manganese of said manganese oxide constitute the only modifying metals incorporated into said ZSM-12 zeolite catalyst.
- 12. A process according to claim 1 wherein said weight ratio of propylene:ethylene is at least 52.1:5.3.
- 13. A process for converting a methanol-containing feed to an olefin-containing hydrocarbon product having a propylene:ethylene weight ratio of at least 35.1:6.4, said process comprising contacting said methanol-containing feed in a reaction zone under methanol conversion conditions with a ZSM-12 zeolite catalyst.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of copending U.S. application Ser. No. 429,933, filed Sept. 30, 1982 now abandoned, the entire disclosure of which is expressly incorporated herein by reference.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
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429933 |
Sep 1982 |
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