US4777313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron-promoted reducible metal oxides and methods of their use
Assignee: Atlantic Richfield Co
•
Filing: 1986-06-23
•
Granted: 1988-10-11
•
Expires: 2006-06-23
Abstract
Abstract Compositions comprising boron-promoted reducible metal oxides (especially reducible oxides of Mn) and optionally containing alkali and alkaline earth metal components are disclosed, as well as use thereof for hydrocarbon conversions characterized by formation of byproduct water. Particular processes comprise the conversion of methane to higher hydrocarbons and the dehydrogenation of dehydrogenatable hydrocarbons, e.g., dehydrogenation of C 2 -C 5 alkanes to form the corresponding olefins.
Inventors
- 👤 John A. Sofranko
- 👤 Robert G. Gastinger
- 👤 C. Andrew Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:46
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/08; B01J21/00; B01J21/02; B01J23/14; B01J23/16; B01J23/18; B01J23/32; B01J23/34; B01J27/00; B01J27/14; B01J27/16; B01J27/18; C; C07; C07C; C07C2/00; C07C2/76; C07C2/82; C07C2/84; C07C5/00; C07C5/42; C07C5/48; C07C2521/00; C07C2521/02; C07C2521/10; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/08; C07C2523/10; C07C2523/14; C07C2523/16; C07C2523/18; C07C2523/32; C07C2523/34; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/745; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
81 words
In an improved method for converting methane to higher hydrocarbon products which comprises contacting a gas comprising methane at synthesizing conditions with a solid comprising at least one reducible oxide of at least one metal which oxides when contacted with methane at synthesizing conditions are, reduced and produce higher hydrocarbon products and water, the improvement which comprises conducting the contacting in the presence of a promoting amount of at least one member of the group consisting of boron and compounds thereof.
Claim 2
Dependent Claim
81 words
In an improved method for converting methane to higher hydrocarbon products which comprises contacting a gas comprising methane at synthesizing conditions with a solid comprising at least one reducible oxide of at least one metal which oxides when contacted with methane at synthesizing conditions are, reduced and produce higher hydrocarbon products and water, the improvement which comprises conducting the contacting in the presence of a promoting amount of at least one member of the group consisting of boron and compounds thereof.
Claim 3
Dependent Claim
36 words
The method of claim 1 which the atomic ratio of the reducible metal oxide component (expressed as the metal) to the boron component (expressed as B) is within the range of about 0.1:1 to about 20:1.
Claim 4
Dependent Claim
36 words
The method of claim 1 wherein the atomic ratio of the reducible metal oxide component (expressed as the metal) to the boron component (expressed as B) is within the range of about 0.5:1 to about 5:1.
Claim 5
Dependent Claim
36 words
The method of claim 1 wherein the solid comprises reducible metal oxides selected from the group consisting of reducible oxides of Mn, Sn, In, Ge, Pb, Sb, Bi, Pr, Tb, Ce, Fe, Ru and mixtures thereof.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the solid comprises reducible oxides of Mn.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein the reducible oxide and the boron promoter are associated with a support material.
Claim 8
Dependent Claim
32 words
The method of claim 1 wherein methane is converted to higher hydrocarbon products in a cyclic manner comprising contacting the solid alternately with a gas comprising methane and with a gaseous oxidant.
Claim 9
Dependent Claim
28 words
The method of claim 7 wherein the solid is contacted with a gas comprising methane at temperatures selected within the range of about 500° to about 1000° C.
Claim 10
Dependent Claim
27 words
The method of claim 1 wherein methane is converted to higher hydrocarbon products by contacting the solid concurrently with a gas comprising methane and a gaseous oxidant.
Claim 11
Dependent Claim
23 words
The method of claim 9 wherein said concurrent contact is conducted at temperatures selected within range of about 300° to about 1200° C.
Claim 12
Dependent Claim
24 words
The method of claim 9 wherein said concurrent contact is conducted at temperatures selected within the range of about 500° to about 1000° C.
Claim 13
Dependent Claim
25 words
The method of claim 9 wherein said concurrent contact is conducted at a temperature selected within the range of about 800° to about 900° C.
Claim 14
Dependent Claim
99 words
In an improved method for converting methane to higher hydrocarbon products which comprises contacting a gas comprising methane at synthesizing conditions with a solid comprising: (a) at least one reducible oxide of at least one metal which oxides when contacted with methane at synthesizing conditions are reduced and produce higher hydrocarbon products and water and (b) at least one member of the group consisting of alkaline earth metals and compounds thereof; the improvement which comprises conducting the contacting in the presence of a promoting amount of at least one member of the group consisting of boron and compounds thereof.
Claim 15
Dependent Claim
99 words
In an improved method for converting methane to higher hydrocarbon products which comprises contacting a gas comprising methane at synthesizing conditions with a solid comprising: (a) at least one reducible oxide of at least one metal which oxides when contacted with methane at synthesizing conditions are reduced and produce higher hydrocarbon products and water and (b) at least one member of the group consisting of alkaline earth metals and compounds thereof; the improvement which comprises conducting the contacting in the presence of a promoting amount of at least one member of the group consisting of boron and compounds thereof.
Claim 16
Dependent Claim
97 words
The method of claim 13 wherein the solid is a mixed oxide composition satisfying the empirical formula: MB.sub.b C.sub.c O.sub.x wherein M is selected from the group consisting of Mn, Sn, In, Ge, Pb, Sb, Bi, Pr, Tb, Ce, Fe, Ru and mixtures thereof; B is boron; and C is at least one alkaline earth metal; and wherein b is within the range of about 0.1 to about 10, c is within the range of about 0.1 to about 100, and x is the number of oxygen atoms required by the valence states of the other elements.
Claim 17
Dependent Claim
17 words
The method of claim 14 wherein b is within the range of about 0.1 to about 4.
Claim 18
Dependent Claim
17 words
The method of claim 14 wherein c is within the range of about 0.5 to about 15.
Claim 19
Dependent Claim
17 words
The method of claim 14 wherein c is within the range of about 1 to about 6.
Claim 20
Dependent Claim
13 words
The method of claim 13 wherein the solid comprises reducible oxides of Mn.
Claim 21
Dependent Claim
15 words
The method of claim 14 wherein the mixed oxide composition comprises reducible oxides of Mn.
Claim 22
Dependent Claim
9 words
The method of claim 19 wherein M is Mn.
Claim 23
Dependent Claim
23 words
The method of claim 13 wherein element (b) is at least one member of the group consisting of oxides of alkaline earth metals.
Claim 24
Dependent Claim
10 words
The method of claim 21 wherein element (b) is magnesia.
Claim 25
Dependent Claim
10 words
The method of claim 21 wherein element (b) is calcia.
Claim 26
Dependent Claim
9 words
The method of claim 14 wherein C is Mg.
Claim 27
Dependent Claim
9 words
The method of claim 14 wherein C is Ca.
Claim 28
Dependent Claim
24 words
The method of claim 13 wherein the solid further comprises at least one member of the group consisting of alkali metals and compounds thereof.
Claim 29
Dependent Claim
11 words
The method of claim 26 wherein the alkali metal is sodium.
Claim 30
Dependent Claim
11 words
The method of claim 26 wherein the alkali metal is lithium.
Claim 31
Dependent Claim
115 words
The method of claim 26 wherein the solid is a mixed oxide composition satisfying the empirical formula: MA.sub.a M.sub.b C.sub.c O.sub.x wherein M is selected from the group consisting of Mn, Sn, In, Ge, Pb, Sb, Bi, Pr, Tb, Ce, Fe, Ru and mixtures thereof; A is at least one alkali metal; B is boron; C is at least one alkaline earth metal; and wherein a is within the range of about 0.01 to about 10, b is within the range of about 0.1 to about 20, c is within the range of about 0.1 to about 100, and x is the number of oxygen atoms required by the valence states of the other elements.
Claim 32
Dependent Claim
17 words
The method of claim 29 wherein b is within the range of about 0.1 to about 10.
Claim 33
Dependent Claim
17 words
The method of claim 29 wherein c is within the range of about 1 to about 7.
Claim 34
Dependent Claim
15 words
The method of claim 29 wherein the mixed oxide composition comprises reducible oxides of Mn.
Claim 35
Dependent Claim
9 words
The method of claim 32 wherein M is Mn.
Claim 36
Dependent Claim
9 words
The method of claim 29 wherein A is sodium.
Claim 37
Dependent Claim
9 words
The method of claim 29 wherein A is lithium.
Claim 38
Dependent Claim
9 words
The method of claim 29 wherein C is Mg.
Claim 39
Dependent Claim
9 words
The method of claim 29 wherein C is Ca.
Claim 40
Dependent Claim
37 words
The method of claim 29 wherein the solid contains Mn, Na, B and Mg and the mixed oxide composition is characterized by the presence of the crystalline compound NaB 2 Mg 4 Mn 2 O x .
Claim 41
Dependent Claim
42 words
The method of claim 38 wherein the mixed oxide composition is further characterized by an amount of Mn in the composition which is in excess of the stoichiometric amount relative to at least one of the other elements of said crystalline compound.
Claim 42
Dependent Claim
16 words
The method of claim 39 wherein a stoichiometric excess of Mn relative to boron is provided.
Claim 43
Dependent Claim
37 words
The method of claim 40 wherein the mixed oxide composition contains excess amounts of Na, Mg and Mn relative to the amounts required by the amount of boron present to satisfy the stoichiometry of said crystalline compound.
References Cited (Backward Citations)
US3607966A
Cited
US3670042A
Cited
US3810953A
Cited
US3887631A
Cited
US3927138A
Cited
US4430313A
Cited
US4554395A
Cited
US4495374A
Cited
US4499322A
Cited
US4547611A
Cited
US4507517A
Cited
US4523049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |