US3663181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ORTHORHOMBIC PLATINUM-METAL OXIDES OF TYPE Pt{11 MO{11
Assignee: EIDP Inc
•
Filing: 1970-06-22
•
Granted: 1972-05-16
•
Expires: 1990-06-22
Abstract
Abstract Disclosed herein are orthorhombic platinum-metal oxides of the type Pt3MO6, wherein: M Mn, Fe, Co, Ni, Cu, Zn, Mg, or Cd; and process for making these oxides which are catalysts for the hydrogenation of ethylene.
Inventors
- 👤 Robert D Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:31
CPC Classifications
C; C01; C01G; C01G55/00; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
59 words
A platinum-metal oxide according to claim 1, wherein M is selected from the group consisting of Mn, Fe, Co, Ni, Zn, Mg and Cd; having characteristic orthorhombic space group, Cmmm, and lattice constants, a, b and c, in the range: a is from 7.08 to 7.22A, b is from 9.86 to 10.20A, and c is from 3.10 to 3.17A.
Claim 2
Dependent Claim
38 words
A platinum-metal oxide according to claim 2, wherein M is Mn and the lattice constants are in the range: a is from 7.08 to 7.16A, b is from 9.90 to 10.05A, and c is from 3.11 to 3.16A.
Claim 3
Dependent Claim
24 words
A platinum-metal oxide according to claim 2, wherein M is Fe and the approximate lattice constants are: a 7.11A, b 9.92A, and c 3.10A.
Claim 4
Dependent Claim
38 words
A platinum-metal oxide according to claim 2, wherein M is Co and the lattice constants are in the range: a is from 7.08 to 7.09A, b is from 9.92 to 9.93A, and c is from 3.11 to 3.15A.
Claim 5
Dependent Claim
38 words
A platinum-metal oxide according to claim 2, wherein M is Ni and the lattice constants are in the range: a is from 7.09 to 7.10A, b is from 9.89 to 9.99A, and c is from 3.11 to 3.12A.
Claim 6
Dependent Claim
38 words
A platinum-metal oxide according to claim 2, wherein M is Zn and the lattice constants are in the range: a is from 7.12 to 7.14A, b is from 9.86 to 9.98A, and c is from 3.14 to 3.16A.
Claim 7
Dependent Claim
38 words
A platinum-metal oxide according to claim 2, wherein M is Mg and the lattice constants are in the range: a is from 7.11 to 7.14A, b is from 9.92 to 9.95A, and c is from 3.13 to 3.15A.
Claim 8
Dependent Claim
38 words
A platinum-metal oxide according to claim 2, wherein M is Cd and the lattice constants are in the range: a is from 7.20 to 7.22A, b is from 10.19 to 10.20A, and c is from 3.12 to 3.17A.
Claim 9
Dependent Claim
48 words
A platinum-metal oxide according to claim 1, wherein M is Cu; having characteristic orthorhombic space group, Pnnm or Pnn2 and lattice constants, a, b and c, in the range: a is from 6.10 to 6.12A, b is from 11.56 to 11.62A, and c is from 3.09 to 3.10A.
Claim 10
Dependent Claim
48 words
A platinum-metal oxide of orthorhombic crystal structure having the formula, PtxMyO6, wherein M is selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn, Mg and Cd; x is from 2.2 to 3.2; y is from 1.0 to 1.4; and x+y is from 3.2 to 4.3.
Claim 11
Dependent Claim
27 words
A platinum-metal oxide according to claim 11, wherein x is from 2.6 to 3.0, y is from 1.0 to 1.4 and x+y is from 3.6 to 4.3.
Claim 12
Dependent Claim
25 words
A platinum-metal oxide according to claim 11, wherein M is Mn and x is from 2.6 to 2.8 and y is from 1.3 to 1.4.
Claim 13
Dependent Claim
25 words
A platinum-metal oxide according to claim 11, wherein M is Co and x is from 2.9 to 3.0 and y is from 1.0 to 1.3.
Claim 14
Dependent Claim
84 words
A process for making orthorhombic platinum-metal oxides of prototype formula, Pt3MO6, comprising contacting a reactant selected from the group consisting of platinum, platinum oxides and platinum halides with at least one reactant selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn, Mg, Cd, and their oxides, iN an oxygen-rich environment provided by reactant oxides, oxygen-rich atmosphere, or decomposition of KClO3, NaClO3 or other oxygen-rich compounds, at a temperature above about 500* C. and at a pressure of at least 100 atmospheres.
Claim 15
Dependent Claim
30 words
The process of claim 15, wherein the reactants are contacted in the presence of a member selected from the group consisting of water, aqueous HCl, aqueous HNO3 and aqueous H2SO4.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |