US4956126A
Expired / Lapsed
US
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Metal-oxide-silica adsorbent and process for refining oil using the same
Assignee: Ineos Silicas Ltd
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Filing: 1988-12-09
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Granted: 1990-09-11
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Expires: 2008-12-09
Abstract
Abstract The invention provides a synthetic, calcined metal-oxide-silica adsorbent of which at least 40% of its surface area is contained in pores with radius of at least 2 nm. The invention further provides a process for refining oil, wherein the oil is treated with the absorbent as a bleaching solid. The adsorbent can be regenerated by calcination without substantial loss of activity.
Inventors
- 👤 Leendert H. Staal
- 👤 Jan C. Vis
- 👤 Jan W. Groeneweg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:42
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/10; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
70 words
A process for refining fatty oil by treatment of the oil with a bleaching solid wherein the bleaching solid comprises an adsorbent which essentially consists of a synthetic calcined metal-oxide-silica, having a surface area at least 40% of which is contained in pores with radius of 2-4 nm and having a specific pore volume in pores with a radius in the range of 100-2000 nm of at least 0.5 ml/g.
Claim 2
Dependent Claim
70 words
A process for refining fatty oil by treatment of the oil with a bleaching solid wherein the bleaching solid comprises an adsorbent which essentially consists of a synthetic calcined metal-oxide-silica, having a surface area at least 40% of which is contained in pores with radius of 2-4 nm and having a specific pore volume in pores with a radius in the range of 100-2000 nm of at least 0.5 ml/g.
Claim 3
Dependent Claim
30 words
A process according to claim 1, wherein at least 50 mole% of the metal contained in the metal-oxide-silica is a metal that can have an oxidation state higher than 2.
Claim 4
Dependent Claim
29 words
A process according to claim 2, wherein the balance of the metal contained in the metal-oxide-silica consists essentially of a metal selected from the group of alkaline earth metals.
Claim 5
Dependent Claim
33 words
A process according to claim 2, wherein the metal that can have an oxidation state higher than 2 is selected from the group consisting of aluminium, iron, zirconium, cobalt, manganese and mixtures thereof.
Claim 6
Dependent Claim
20 words
A process according to claim 4, wherein the metal that can have an oxidation state higher than 2 is aluminium.
Claim 7
Dependent Claim
28 words
A process according to claim 1, wherein at least 60% of the surface area of the adsorbent is contained in pores with radius of at least 2 nm.
Claim 8
Dependent Claim
20 words
A process according to claim 1, wherein said adsorbent has a total specific surface area of 250-550 m 2 /g.
Claim 9
Dependent Claim
26 words
A process according to claim 1, wherein said adsorbent has a specific surface area in pores with radius of 2.0-4.0 nm of 100-500 m 2 /g.
Claim 10
Dependent Claim
26 words
A process according to claim 1, wherein said adsorbent has a specific pore volume in pores with radius of up to 2000 nm of 1.5-4 ml/g.
Claim 11
Dependent Claim
24 words
A process according to claim 9, wherein said adsorbent has a specific pore volume in pores with radius of 100-2000 nm of 0.7-3 ml/g.
Claim 12
Dependent Claim
12 words
A process according to claim 1, wherein the metal-oxide-silica is X-ray amorphous.
Claim 13
Dependent Claim
17 words
A process according to claim 1, wherein said adsorbent has a volume-weighted mean diameter of 5-50 micrometres.
Claim 14
Dependent Claim
26 words
A process according to claim 1, wherein said adsorbent has a metal content, calculated as mole fraction of the total metal plus silicon content, of 0.1-0.3.
Claim 15
Dependent Claim
19 words
A process according to claim 1, wherein said adsorbent has a sodium content of less than 0.5% by weight.
Claim 16
Dependent Claim
31 words
A process according to claim 1, wherein the treatment comprises contacting the oil and the bleaching solid, and maintaining the contact for an adequate period of time at an elevated temperature.
Claim 17
Dependent Claim
15 words
A process according to claim 15, wherein the elevated temperature is at least 40° C.
Claim 18
Dependent Claim
13 words
A process according to claim 16, wherein the elevated temperature is 50°-200° C.
Claim 19
Dependent Claim
21 words
A process according to claim 1, wherein the adsorbent is used in an amount of 0.1-5% by weight of the oil.
Claim 20
Dependent Claim
14 words
A process according to claim 1, wherein the fatty oil is a triglyceride oil.
Claim 21
Dependent Claim
16 words
A process according to claim 1 or 19, wherein the fatty oil is an edible oil.
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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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |