US4476102A
Expired / Lapsed
US
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Molybdenum oxycarbonitride compositions and process for preparing the same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-11-24
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Granted: 1984-10-09
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Expires: 2000-11-24
Abstract
Abstract Novel molybdenum oxycarbonitride compositions are described together with a general method of synthesis. The compositions can be obtained by the relatively low temperature thermal decomposition of an amine molybdate and can be amorphous, poorly crystalline, or substantially crystalline, and can unexpectedly possess high surface areas in the region of about 130 m2/g and higher. The compositions have the general formula: MoOaCbNc, where a, b and c are non-zero decimal values and the sum: a+b+c, is less than or equal to about one, as evidenced by X-ray diffraction and chemical analyses. The compositions are useful as abrasives, as for removing oxide coatings from metals.
Inventors
- 👤 Larry E. McCandlish
- 👤 Larissa W. Turaew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:48
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1481; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B01J27/00; B01J27/24; C01; C01B; C01B21/00; C01B21/082; C01B21/0828; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0411; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/10; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2002/77; C01P2002/80; C01P2002/88; C01P2006/00; C01P2006/12; C07C2527/00; C07C2527/24; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
37 words
A composition of matter consisting essentially of molybdenum oxycarbonitride, possessing a face-centered cubic structure, as evidenced by powder X-ray diffractometry and elemental analysis, said composition having interstitial oxygen, carbon and nitrogen atoms distributed throughout the bulk structure.
Claim 2
Dependent Claim
37 words
A composition of matter consisting essentially of molybdenum oxycarbonitride, possessing a face-centered cubic structure, as evidenced by powder X-ray diffractometry and elemental analysis, said composition having interstitial oxygen, carbon and nitrogen atoms distributed throughout the bulk structure.
Claim 3
Dependent Claim
40 words
The composition of matter of claim 1 being of the formula: Mo O a C b N c where a, b and c are non-zero decimal values, and wherein the sum: a+b+c, is less than or equal to about 1.
Claim 4
Dependent Claim
21 words
The composition of matter of claim 2 being of the formula: Mo O 0 .43 C 0 .31 N 0 .33.
Claim 5
Dependent Claim
22 words
The composition of matter of claim 1 possessing an argon BET surface area of about 60 square meters per gram and higher.
Claim 6
Dependent Claim
11 words
The composition of matter of claim 1 being passivated with oxygen.
Claim 7
Dependent Claim
44 words
A process for producing the composition of claim 1 comprising the step of thermally decomposing an amine molybdate at elevated temperature sufficient to form said composition in the presence of a nonoxidizing atmosphere wherein said amine contains at least one single bond C--N grouping.
Claim 8
Dependent Claim
22 words
The process of claim 6 wherein said thermal decomposition is conducted at a temperature in the range of up to 800° C.
Claim 9
Dependent Claim
16 words
The process of claim 6 wherein said atmosphere comprises hydrogen, helium, carbon monoxide, or mixture thereof.
Claim 10
Dependent Claim
21 words
The process of claim 6 wherein said amine is an alkylamine, alkylenediamine or aromatic amine containing 1 to 20 carbon atoms.
Claim 11
Dependent Claim
20 words
The process of claim 9 wherein said amine is ethylamine, diethylamine, butylamine, ethylenediamine, di-(n-butyl) amine, trimethylamine, triethylamine and 1,3-cyclohexane bis(methylamine).
Claim 12
Dependent Claim
48 words
A process for producing the composition of claim 1 comprising the step of thermally decomposing ethylenediammonium molybdate at an elevated temperature sufficient to form said composition, said temperature being up to 700° C. wherein the thermal decomposition is conducted in the presence of an atmosphere substantially comprising helium.
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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) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |