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US4467048A
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Metal oxide-niobium (V) hydride/oxide compositions and process for preparing them
Assignee: Shell USA Inc
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Filing: 1983-08-30
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Granted: 1984-08-21
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Expires: 2003-08-30
Abstract
Abstract Compositions are disclosed which comprise a metal oxide substrate having niobium (V) hydride/oxide bound to the surface thereof.
Inventors
- 👤 Thomas H. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:54
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J31/00; B01J31/02; B01J31/12; B01J31/121; B01J2231/00; B01J2231/50; B01J2231/52
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
41 words
A composition comprising pentavalent niobium, hydrogen, oxygen and a metal oxide substrate wherein at least one valence of the niobium is bound to an oxygen which is bound to the substrate and the remaining valences of niobium are bound to hydrogen.
Claim 2
Dependent Claim
41 words
A composition comprising pentavalent niobium, hydrogen, oxygen and a metal oxide substrate wherein at least one valence of the niobium is bound to an oxygen which is bound to the substrate and the remaining valences of niobium are bound to hydrogen.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the metal oxide substrate is silica, alumina, silica-alumina, zeolite, open lattice clay or a mixture thereof.
Claim 4
Dependent Claim
22 words
The composition of claim 1 wherein the metal oxide substrate has a major component of silica or alumina or a mixture thereof.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein the metal oxide substrate is a silicon oxide gel, an alumina gel or a silicon-alumina gel.
Claim 6
Dependent Claim
67 words
The compositions of claims 1, 2, 3 or 4 prepared by reacting a substantially anhydrous metal oxide substrate containing surface hydroxyl groups with a niobium pentahalide in the vapor state whereby a niobium (V) halide/oxide-metal oxide composition is prepared and subsequently reacting the niobium (V) halide/oxide-metal oxide composition with a hydrogen-containing reducing agent whereby the halide of the niobium (V) halide/oxide-metal oxide composition is replaced by hydrogen.
Claim 7
Dependent Claim
79 words
The compositions of claims 1, 2, 3 or 4 prepared by a process which comprises subliming a niobium pentahalide and reacting in a substantially anhydrous and oxygen-free atmosphere the vapor therefrom with a substantially anhydrous metal oxide substrate containing surface hydroxyl groups whereby a niobium (V) halide/oxide-metal oxide composition is prepared and subsequently reacting the niobium (V) halide/oxide-metal oxide composition with a hydrogen-containing reducing agent whereby the halide of the niobium (V) halide/oxide-metal oxide composition is replaced by hydrogen.
Claim 8
Dependent Claim
83 words
A process for preparing a metal oxide composition containing niobium (V) hydride/oxide bound to the surface thereof which process comprises subliming a niobium pentahalide and reacting in a substantially anhydrous and oxygen-free atmosphere the vapor therefrom with a substantially anhydrous metal oxide substrate containing surface hydroxyl groups whereby a niobium (V) halide/oxide-metal composition is prepared and subsequently reacting the niobium (V) halide/oxide-metal oxide composition with a hydrogen-containing reducing agent whereby the halide of the niobium (V) halide/oxide-metal oxide composition is replaced by hydrogen.
Claim 9
Dependent Claim
83 words
A process for preparing a metal oxide composition containing niobium (V) hydride/oxide bound to the surface thereof which process comprises subliming a niobium pentahalide and reacting in a substantially anhydrous and oxygen-free atmosphere the vapor therefrom with a substantially anhydrous metal oxide substrate containing surface hydroxyl groups whereby a niobium (V) halide/oxide-metal composition is prepared and subsequently reacting the niobium (V) halide/oxide-metal oxide composition with a hydrogen-containing reducing agent whereby the halide of the niobium (V) halide/oxide-metal oxide composition is replaced by hydrogen.
Claim 10
Dependent Claim
24 words
The process of claim 7 herein the metal oxide substrate is a silicon oxide gel an aluminum oxide gel or a silicon-aluminum oxide gel.
Claim 11
Dependent Claim
22 words
The process of claim 7 wherein the metal oxide substrate is silica, alumina, silica-alumina, zeolite, open lattice clay or a mixture thereof.
Claim 12
Dependent Claim
22 words
The process of claim 7 wherein the metal oxide substrate has a major component of silica or alumina or a mixture thereof.
Claim 13
Dependent Claim
32 words
The process of claim 7 wherein the hydrogen-containing reducing agent is a hydrogen-containing gas and the reaction with the hydrogen-containing gas is carried out at a temperature of greater than 50° C.
Claim 14
Dependent Claim
48 words
The process of claim 7 wherein the hydrogen-containing reducing agent is MAl(H) n (OP) 4-n where n equals 1 to 4, R is a substituted or unsubstituted alkyl or polyether alkyl group having a carbon number ranging from 1 to about 12 and M is an alkal metal.
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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |