US3870657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina-supported catalysts having substantial area in large pores
Assignee: Phillips Petroleum Co
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Filing: 1973-01-17
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Granted: 1975-03-11
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Expires: 1993-01-17
Abstract
Abstract Catalysts comprising iron, nickel or cobalt, and antimony or arsenic supported on alumina having relatively few pores smaller in diameter than 500 A and a surface area not less than 2 m2/g contributed by pores having diameters larger than about 500 A are used for selective hydrogenation of hydrocarbons.
Inventors
- 👤 Emory W Pitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:32
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; C; C07; C07C; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/75; C07C2523/755; C07C2523/76; C07C2523/84; C07C2523/843
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A catalyst consisting essentially of a porous alumina support, at least one metal selected from the group consisting of nickel, iron and cobalt and at least one material selected from the group consisting of antimony and arsenic, said catalyst being in a reduced state, a substantial portion of the surface area of said support being in pores having a diameter not less than 500 A, said pores of said diameter comprising a surface area of not less than 2 square meters per gram of said catalyst.
Claim 2
Dependent Claim
86 words
A catalyst consisting essentially of a porous alumina support, at least one metal selected from the group consisting of nickel, iron and cobalt and at least one material selected from the group consisting of antimony and arsenic, said catalyst being in a reduced state, a substantial portion of the surface area of said support being in pores having a diameter not less than 500 A, said pores of said diameter comprising a surface area of not less than 2 square meters per gram of said catalyst.
Claim 3
Dependent Claim
86 words
A CATALYST CONSISTING ESSENTIALLY OF A POROUS ALUMINA SUPPORT, AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, IRON AND COBALT AND AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ANTIMONY AND ARSENIC, SAID CATALYST BEING IN A REDUCED STATE, A SUBSTANTIAL PORTION OF THE SURFACE AREA OF SAID SUPPORT BEING IN PORES HAVING A DIAMETER NOT LESS THAN 500 A, SAID PORES OF SAID DIAMETER COMPRISING A SURFACE AREA OF NOT LESS THAN 2 SQUARE METERS PER GRAM OF SAID CATALYST.
Claim 4
Dependent Claim
86 words
A CATALYST CONSISTING ESSENTIALLY OF A POROUS ALUMINA SUPPORT, AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, IRON AND COBALT AND AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ANTIMONY AND ARSENIC, SAID CATALYST BEING IN A REDUCED STATE, A SUBSTANTIAL PORTION OF THE SURFACE AREA OF SAID SUPPORT BEING IN PORES HAVING A DIAMETER NOT LESS THAN 500 A, SAID PORES OF SAID DIAMETER COMPRISING A SURFACE AREA OF NOT LESS THAN 2 SQUARE METERS PER GRAM OF SAID CATALYST.
Claim 5
Dependent Claim
27 words
The catalyst of claim 1 in which said support has a surface area within the range of from about 2 to about 10 square meters per gram.
Claim 6
Dependent Claim
65 words
The catalyst of claim 1 in which said support has a surface area of about 2.4 square meters per gram in pores having diameters greater than 1,000 A, a surface area of about 2.8 square meters per gram in pores having diameters greater than 500 A and a surface area of about 4.7 square meters per gram in pores having diameters greater than 20 A.
Claim 7
Dependent Claim
52 words
The catalyst of claim 1 in which said metal is present in an amount within the range of from about 0.001 to about 20 weight percent of said catalyst and said material is present in an amount within the range of from about 0.001 to about 30 weight percent of said catalyst.
Claim 8
Dependent Claim
24 words
The catalyst of claim 1 in which said catalyst contains a mixture of nickel, cobalt and iron and a mixture of arsenic and antimony.
Claim 9
Dependent Claim
61 words
The catalyst of claim 5 in which said mixture of nickel, cobalt and iron is present in an amount within the range of from about 0.001 to about 20 weight percent of said catalyst and said mixture of arsenic and antimony is present in an amount within the range of from about 0.001 to about 30 weight percent of said catalyst.
Claim 10
Dependent Claim
61 words
The catalyst of claim 6 in which said mixture of nickel, cobalt and iron is present in an amount within the range of from about 0.1 to about 3 weight percent of said catalyst and said mixture of arsenic and antimony is present in an amount within the range of from about 0.1 to about 3 weight percent of said catalyst.
Claim 11
Dependent Claim
21 words
The catalyst of claim 3 in which said catalyst contains about 0.94 weight percent nickel and about 0.66 weight percent arsenic.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |