US4072732A
Expired / Lapsed
US
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Conversion of methanol and dimethyl ether to C2 -C6 monoolefins using a partially hydrated zirconium sulfate catalyst
Assignee: Albemarle Corp
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Filing: 1976-04-02
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Granted: 1978-02-07
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Expires: 1996-04-02
Abstract
Abstract Catalytic process for converting dimethyl ether and methanol to higher hydrocarbons, comprising contacting the dimethyl ether and/or methanol with an alumina, silica or zirconia-supported zirconium sulfate catalyst, at an elevated temperature.
Inventors
- 👤 Duane C. Hargis
- 👤 Lawrence J. Kehoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:31
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/02; C07C2527/053
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
A process for the conversion of a reactant selected from the class consisting of methanol and dimethyl ether to C 2 -C 6 monoolefin, said process comprising contacting said reactant with a partially hydrated zirconium sulfate catalyst at a temperature within the range of about 200° C. to about 400° C.
Claim 2
Dependent Claim
51 words
A process for the conversion of a reactant selected from the class consisting of methanol and dimethyl ether to C 2 -C 6 monoolefin, said process comprising contacting said reactant with a partially hydrated zirconium sulfate catalyst at a temperature within the range of about 200° C. to about 400° C.
Claim 3
Dependent Claim
44 words
The process of claim 1 wherein said zirconium sulfate catalyst contains an amount of water of hydration sufficient to effect catalytic activity of the catalyst, but not more than about one mole of water of hydration per mole of Zr(SO 4 ) 2 .
Claim 4
Dependent Claim
27 words
The process of claim 2 wherein said zirconium sulfate is supported on a support selected from the class consisting of crystalline γ-alumina, crystalline silica, and crystalline zirconia.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein said support is crystalline γ-alumina.
Claim 6
Dependent Claim
11 words
The process of claim 3 wherein said support is crystalline silica.
Claim 7
Dependent Claim
11 words
The process of claim 3 wherein said support is crystalline zirconia.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |