Patent US2511945A successfully refreshed from Google Patents.
Patent US4102818A successfully refreshed from Google Patents.
US4102818A
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Hydrotreating catalyst and process utilizing the same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-02-04
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Granted: 1978-07-25
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Expires: 1997-02-04
Abstract
Abstract A catalyst is provided which comprises a hydrogenation component composited with an alumina support prepared by reacting an alkali metal aluminate with an aliphatic dicarboxylic acid, e.g. oxalic acid.
Inventors
- 👤 Paul E. Eberly, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:32
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
154 words
A catalyst comprising alumina and hydrogenation components composited with said alumina, said hydrogenation components being selected from the group consisting of at least one elemental metal, metal oxide and metal sulfide of a Group VIB element of the Periodic Table of Elements and at least one elemental metal, metal oxide and metal sulfide of a Group VIII element of the Periodic Table of Elements, said alumina having been prepared by the steps which comprise reacting a solution of an aluminate selected from the group consisting of alkali metal aluminate and ammonium aluminate with an aqueous solution of an aliphatic dicarboxylic acid selected from the group consisting of C 2 to C 6 saturated aliphatic dicarboxylic acid and C 2 to C 6 unsaturated aliphatic dicarboxylic acids to precipitate a hydrous aluminum oxide, said dicarboxylic acid being present in an amount of at least one mole of said acid per 2 moles of said aluminate.
Claim 2
Dependent Claim
154 words
A catalyst comprising alumina and hydrogenation components composited with said alumina, said hydrogenation components being selected from the group consisting of at least one elemental metal, metal oxide and metal sulfide of a Group VIB element of the Periodic Table of Elements and at least one elemental metal, metal oxide and metal sulfide of a Group VIII element of the Periodic Table of Elements, said alumina having been prepared by the steps which comprise reacting a solution of an aluminate selected from the group consisting of alkali metal aluminate and ammonium aluminate with an aqueous solution of an aliphatic dicarboxylic acid selected from the group consisting of C 2 to C 6 saturated aliphatic dicarboxylic acid and C 2 to C 6 unsaturated aliphatic dicarboxylic acids to precipitate a hydrous aluminum oxide, said dicarboxylic acid being present in an amount of at least one mole of said acid per 2 moles of said aluminate.
Claim 3
Dependent Claim
35 words
The catalyst of claim 1 wherein said dicarboxylic acid is added to said aluminate solution in an amount sufficient to lower the pH of said solution to a range of about 7 to about 9.
Claim 4
Dependent Claim
35 words
The catalyst of claim 1 wherein said dicarboxylic acid is added to said aluminate solution in an amount sufficient to lower the pH of said solution to a range of about 8.5 to about 9.
Claim 5
Dependent Claim
25 words
The catalyst of claim 1 wherein said dicarboxylic acid is selected from the group consisting of ethanedioic acid, propanedioic acid, butanedioic acid, and cis-butenedioic acid.
Claim 6
Dependent Claim
12 words
The catalyst of claim 1 wherein said dicarboxylic acid is ethanedioic acid.
Claim 7
Dependent Claim
11 words
The catalyst of claim 1 wherein said aluminate is sodium aluminate.
Claim 8
Dependent Claim
38 words
The catalyst of claim 1 wherein after said aluminate is reacted with said aqueous solution of an aliphatic dicarboxylic acid, the resulting hydrous aluminum oxide is calcined and the resulting calcined alumina is composited with a hydrogenation component.
Claim 9
Dependent Claim
92 words
Alumina prepared by the steps which comprise: (a) reacting a solution of an aluminate selected from the group consisting of alkali metal aluminate and ammonium aluminate with an aliphatic dicarboxylic acid selected from the group consisting of C 2 to C 6 saturated aliphatic dicarboxylic and C 2 to C 6 unsaturated aliphatic dicarboxylic acids to produce a hydrous aluminum oxide, said dicarboxylic acid being present in an amount of at least 1 mole of said acid per mole of said aluminate, and (b) calcining the hydrous aluminum oxide to produce alumina.
Claim 10
Dependent Claim
92 words
Alumina prepared by the steps which comprise: (a) reacting a solution of an aluminate selected from the group consisting of alkali metal aluminate and ammonium aluminate with an aliphatic dicarboxylic acid selected from the group consisting of C 2 to C 6 saturated aliphatic dicarboxylic and C 2 to C 6 unsaturated aliphatic dicarboxylic acids to produce a hydrous aluminum oxide, said dicarboxylic acid being present in an amount of at least 1 mole of said acid per mole of said aluminate, and (b) calcining the hydrous aluminum oxide to produce alumina.
Claim 11
Dependent Claim
35 words
The alumina of claim 8 wherein said dicarboxylic acid is added to said aluminate solution in an amount sufficient to lower the pH of said solution to a range of about 7 to about 9.
Claim 12
Dependent Claim
38 words
The alumina of claim 8 wherein said dicarboxylic acid is added to said aluminate solution in an amount sufficient to lower the pH of said solution to a pH in the range of about 8.5 to about 9.
Claim 13
Dependent Claim
25 words
The alumina of claim 8 wherein said dicarboxylic acid is selected from the group consisting of ethanedioic acid, propanedioic acid, butanedioic acid and cis-butenedioic acid.
Claim 14
Dependent Claim
12 words
The alumina of claim 8 wherein said dicarboxylic acid is ethanedioic acid.
Claim 15
Dependent Claim
11 words
The alumina of claim 8 wherein said aluminate is sodium aluminate.
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) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |