US4299730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a catalyst for the hydration of olefins into alcohols
Assignee: Huels AG
•
Filing: 1980-02-26
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Granted: 1981-11-10
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Expires: 2000-02-26
Abstract
Abstract A process for producing a clay-containing catalyst for the hydration of olefins having 2-3 carbon atoms into alcohols, which comprises: (A) acid-treating a montmorillonite-containing clay which is contaminated by not more than 3% of quartz, feldspar or mica, and which may contain up to 0.5% of K 2 O, until the clay has an Al 2 O 3 content of 13-18% by weight, thereby obtaining a surface area of 200-400 m 2 /g; (B) molding the clay at a total water content of 20-35%; (C) calcining at 500°-800° C.; (D) acid-treating the molded and calcined clay to an Al 2 O 3 content of 1-5% by weight, thereby obtaining a surface area of 150-250 m 2 /g; and (E) impregnating said material with phosphoric acid.
Inventors
- 👤 August Sommer
- 👤 Rainer Brucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:33
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J21/00; B01J21/16; C; C07; C07C; C07C29/00; C07C29/03; C07C29/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
134 words
A process for producing a clay-containing catalyst for the hydration of olefins having 2-3 carbon atoms into alcohols, which comprises: (A) acid-treating a montmorillonite-containing clay which is contaminated by not more than 3% of quartz, feldspar or mica, or mixtures thereof, and which may contain up to 0.5% K 2 O, until said clay has an Al 2 O 3 content of 13-18% by weight, thereby obtaining a surface area of 200-400 m 2 /g; (B) molding said clay at a total water content of 20-35%; then (C) calcining said clay at 500°-800° C.; (D) acid-treating said molded and calcined clay to an Al 2 O 3 content of 1-5% by weight, thereby obtaining a material with a surface area of 150-250 m 2 /g; and then (E) impregnating said material with phosphoric acid.
Claim 2
Dependent Claim
134 words
A process for producing a clay-containing catalyst for the hydration of olefins having 2-3 carbon atoms into alcohols, which comprises: (A) acid-treating a montmorillonite-containing clay which is contaminated by not more than 3% of quartz, feldspar or mica, or mixtures thereof, and which may contain up to 0.5% K 2 O, until said clay has an Al 2 O 3 content of 13-18% by weight, thereby obtaining a surface area of 200-400 m 2 /g; (B) molding said clay at a total water content of 20-35%; then (C) calcining said clay at 500°-800° C.; (D) acid-treating said molded and calcined clay to an Al 2 O 3 content of 1-5% by weight, thereby obtaining a material with a surface area of 150-250 m 2 /g; and then (E) impregnating said material with phosphoric acid.
Claim 3
Dependent Claim
29 words
The process of claim 1, wherein said acid treatment step (A) further comprises adding substantially pure clay to obtain an Al 2 O 3 content of 16-18% by weight.
Claim 4
Dependent Claim
24 words
The process of claim 1, wherein said acid treatment step (A) is carried out to obtain a surface area of 240-300 m 2 /g.
Claim 5
Dependent Claim
26 words
The process of claim 1, wherein said acid treatment in step (D) is carried out to an Al 2 O 3 content of 1-3% by weight.
Claim 6
Dependent Claim
25 words
The process of claim 1, wherein said acid treatment in step (D) is carried out to obtain a surface area of 180-220 m 2 /g.
Claim 7
Dependent Claim
25 words
The process of claim 1, wherein said starting montmorillonite-containing clay also comprises other minerals having the montmorillonite crystal lattice, but which do not contain potassium.
Claim 8
Dependent Claim
43 words
The process of claim 1, wherein said montmorillonite-containing clay is a highly active bleaching earth which contains less than 0.1% K 2 O, having a weight ratio of (Al 2 O 3 +Fe 2 O 3 ): SiO 3 of 1:3.5 to 1:4.5.
Claim 9
Dependent Claim
39 words
The process of claim 7, wherein, after treating said highly active bleaching earth with acid according to step (A), said earth is treated with substantially pure clay in order to adjust the surface area of said earth to 16-18%.
Claim 10
Dependent Claim
23 words
The process of claim 1, wherein said molding step (B) is carried out to form contact bodies having a diameter of 2-5 mm.
Claim 11
Dependent Claim
11 words
The process of claim 9, wherein said diameter is 2-3 mm.
Claim 12
Dependent Claim
11 words
The process of claim 9, wherein said contact bodies are spherical.
Claim 13
Dependent Claim
11 words
The process of claim 9, wherein said contact bodies are cylindrical.
Claim 14
Dependent Claim
15 words
The process of claim 9, wherein said contact bodies are in the form of tablets.
Claim 15
Dependent Claim
9 words
A catalyst prepared by the process of claim 1.
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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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |