Patent US4139494A successfully refreshed from Google Patents.
US4139494A
Expired / Lapsed
US
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Catalyst for hydrofining petroleum wax
Assignee: Tonen General Sekiyu KK
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Filing: 1977-09-12
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Granted: 1979-02-13
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Expires: 1997-09-12
Abstract
Abstract A catalyst and process are described for hydrofining petroleum wax comprising contacting the wax with hydrogen in the presence of a catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier containing from about 0.2 to 5 wt.% of an alkali metal component, the catalyst having a specific surface area of about 200 to 300 m2/g and being further characterized in that (a) the volume of pores having a diameter in the range of 60 to 150 A is greater than 80% of the volume of pores having a diameter in the range of 0 to 150 A and (b) the volume of pores having a diameter in the range of 0 to 600 A is in the range of about 0.45 to 0.60 ml/g.
Inventors
- 👤 Takuji Itoh
- 👤 Satoshi Sakurada
- 👤 Shohei Okano
- 👤 Takashi Obayashi
- 👤 Takeo Toyoizumi
- 👤 Osami Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J21/00; B01J21/12; B01J23/883; B01J35/00; B01J35/60; C; C10; C10G; C10G73/00; C10G73/42; C10G73/44; B01J35/61; B01J35/615; B01J35/63; B01J35/635; B01J35/64; B01J35/647
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier containing from about 5 to 25 wt.% of silica and from 0.2 to 5 wt.% of an alkali metal component and being further characterized in that: (a) the volume of pores having a diameter in the range of 60 to 150 A is greater than 80% of the volume of pores having a diameter in the range of 0 to 150 A; and (b) the volume of pores having a diameter in the range of 0 to 600 A is in the range of from about 0.45 to 0.60 ml/g.
Claim 2
Dependent Claim
104 words
A catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier containing from about 5 to 25 wt.% of silica and from 0.2 to 5 wt.% of an alkali metal component and being further characterized in that: (a) the volume of pores having a diameter in the range of 60 to 150 A is greater than 80% of the volume of pores having a diameter in the range of 0 to 150 A; and (b) the volume of pores having a diameter in the range of 0 to 600 A is in the range of from about 0.45 to 0.60 ml/g.
Claim 3
Dependent Claim
27 words
The catalyst of claim 1 wherein said metal hydrogenating component is selected from the group consisting of metals of Group VI and Group VIII and mixture thereof.
Claim 4
Dependent Claim
12 words
The catalyst of claim 2 wherein said metal hydrogenating component comprises nickel.
Claim 5
Dependent Claim
26 words
The catalyst of claim 2 wherein said metal hydrogenating component is selected from the group consisting of chromium, molybdenum, tungsten, iron, cobalt, nickel and mixture thereof.
Claim 6
Dependent Claim
18 words
The catalyst of claim 4 wherein the silica content ranges from 8 to 20 wt.% of the carrier.
Claim 7
Dependent Claim
24 words
The catalyst of claim 5 wherein the alkali metal component is present in an amount ranging from 0.3 to 1 wt.% of the carrier.
Claim 8
Dependent Claim
16 words
The catalyst of claim 6 wherein the total pore volume ranges from 0.5 to 1.0 ml/g.
Claim 9
Dependent Claim
21 words
The catalyst of claim 7 wherein the catalyst has a specific surface area ranging from 200 to 300 m 2 /g.
Claim 10
Dependent Claim
28 words
The catalyst of claim 8 wherein said alkali metal component is an oxide of one or more metals selected from the group consisting of lithium, potassium and sodium.
Claim 11
Dependent Claim
38 words
The catalyst of claim 9 wherein the metal hydrogenating component is selected from the group consisting of a mixture of molybdenum and cobalt, molybdenum and nickel, tungsten and nickel, molybdenum, cobalt and nickel and tungsten, cobalt and nickel.
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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) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |