Patent US5012014A successfully refreshed from Google Patents.
US5012014A
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Catalyst pretreatment for olefin hydration
Assignee: Mobil Oil AS
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Filing: 1990-04-26
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Granted: 1991-04-30
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Expires: 2010-04-26
Abstract
Abstract A process for production of alcohol or ether by hydration of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a hydration zone with porous solid metal oxide acidic olefin hydration catalyst under olefins hydration conditions. The process is characterized by the step of pretreating porous solid catalyst, such as acid zeolite, prior to contacting with the olefinic feedstock with a wetting agent containing at least one polar aliphatic oxygenated hydrocarbon to substantially wet said solid catalyst and sorb said wetting agent into pores of said solid catalyst. After initiating hydration reaction by feeding the olefinic feedstock and water, increased catalytic activity is obtained. The process is particularly useful for making isopropanol and DIPE from propene and water.
Inventors
- 👤 Jonathan E. Child
- 👤 Byung C. Choi
- 👤 Francis P. Ragonese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:40
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04; C07C41/00; C07C41/01; C07C41/05; C07C41/06; C07C41/09; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7007
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
87 words
In the process for the production of diisopropyl ether or isopropanol by hydration of feedstock containing propene, which comprises contacting the propene feedstock and water in a hydration zone with porous solid metal oxide acidic olefin hydration catalyst under olefins hydration conditions, the improvement which comprises: pretreating the porous solid catalyst prior to contacting with the propene feedstock with a wetting agent containing at least one polar aliphatic oxygenated hydrocarbon to substantially wet said solid catalyst and sorb said wetting agent into pores of said solid catalyst.
Claim 2
Dependent Claim
87 words
In the process for the production of diisopropyl ether or isopropanol by hydration of feedstock containing propene, which comprises contacting the propene feedstock and water in a hydration zone with porous solid metal oxide acidic olefin hydration catalyst under olefins hydration conditions, the improvement which comprises: pretreating the porous solid catalyst prior to contacting with the propene feedstock with a wetting agent containing at least one polar aliphatic oxygenated hydrocarbon to substantially wet said solid catalyst and sorb said wetting agent into pores of said solid catalyst.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said wetting agent contains isopropanol or isopropanol-water mixture.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein said solid catalyst comprises acidic shape selective medium pore zeolite.
Claim 5
Dependent Claim
14 words
The process of claim 3 wherein said solid catalyst consists essentially of zeolite Beta.
Claim 6
Dependent Claim
13 words
The process of claim 4 wherein the wetting agent consists essentially of isopropanol.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the hydration zone conditions comprise temperature of about 50° to 200° C.
Claim 8
Dependent Claim
103 words
A process for the production of alcohol or ether by hydration of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a hydration zone with porous solid metal oxide acidic olefin hydration catalyst under olefins hydration conditions, which comprises: pretreating a porous solid catalyst prior to contacting with the olefinic feedstock with a wetting agent containing at least one polar aliphatic oxygenated hydrocarbon to substantially wet said solid catalyst and sorb said wetting agent into pores of said solid catalyst; and initiating hydration reaction by feeding the olefinic feedstock and water, thereby obtaining increased catalytic activity.
Claim 9
Dependent Claim
103 words
A process for the production of alcohol or ether by hydration of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a hydration zone with porous solid metal oxide acidic olefin hydration catalyst under olefins hydration conditions, which comprises: pretreating a porous solid catalyst prior to contacting with the olefinic feedstock with a wetting agent containing at least one polar aliphatic oxygenated hydrocarbon to substantially wet said solid catalyst and sorb said wetting agent into pores of said solid catalyst; and initiating hydration reaction by feeding the olefinic feedstock and water, thereby obtaining increased catalytic activity.
Claim 10
Dependent Claim
34 words
The process of claim 7 wherein the wetting agent contains at least one C 2 -C 6 aliphatic alkanol, ether, aldehyde, ester, ketone, or mixtures thereof with one another or mixtures thereof with water.
Claim 11
Dependent Claim
17 words
The process of claim 7 wherein the olefinic feedstock comprises propylene and the wetting agent comprises isopropanol.
Claim 12
Dependent Claim
16 words
The process of claim 7 wherein the wetting agent is a hydration product of feedstock olefin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |