US3870655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for the preparation of anthraquinone
Assignee: Nippon Shokubai Co Ltd
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Filing: 1973-01-26
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Granted: 1975-03-11
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Expires: 1993-01-26
Abstract
Abstract A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containing gas comprising a catalytic material supported on an inert carrier, said catalytic material comprising 100 parts by weight, calculated as titanium dioxide, of titanium, 1 to 45 parts by weight, calculated as vanadium pentoxide, of vanadium, 0.05 to 15 parts by weight, calculated as oxide thereof, of at least two metal oxides selected from the group consisting of Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0 to 5 parts by weight, calculated as phosphorus pentoxide, of phosphorus and 0 to 5 parts by weight, calculated as niobium pentoxide, of niobium.
Inventors
- 👤 Yoku Nanba
- 👤 Tetsuji Ono
- 👤 Yukio Okuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
74 words
A CATALYST FOR THE PREPARATION OF ANTHRAQUINONE BY VAPOR PHASE OXIDATION OF ENTHRACENE WITH A MOLECULAR OXYGENCONTAINING GAS CONSISTING ESSENTIALLY OF A CATALYTIC MATERIAL SUPPORTED ON AN INERT CARRIER, SAID CATALYTIC MATERIAL CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF TIO2, 1 TO 45 PARTS BY WEIGHT OF V2O5 AND 0.05 TO 15 PARTS WEIGHT OF AT LEAST TWO METAL OXIDES SELECTED FROM THE GROUP CONSISTING OF LI2O, NA2O, K2O, RB2O, CS2O AND TL2O.
Claim 2
Dependent Claim
74 words
A CATALYST FOR THE PREPARATION OF ANTHRAQUINONE BY VAPOR PHASE OXIDATION OF ENTHRACENE WITH A MOLECULAR OXYGENCONTAINING GAS CONSISTING ESSENTIALLY OF A CATALYTIC MATERIAL SUPPORTED ON AN INERT CARRIER, SAID CATALYTIC MATERIAL CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF TIO2, 1 TO 45 PARTS BY WEIGHT OF V2O5 AND 0.05 TO 15 PARTS WEIGHT OF AT LEAST TWO METAL OXIDES SELECTED FROM THE GROUP CONSISTING OF LI2O, NA2O, K2O, RB2O, CS2O AND TL2O.
Claim 3
Dependent Claim
91 words
A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containing gas consisting essentially of a catalytic material supported on an inert carrier, said catalytic material consisting essentially of 100 parts by weight of TiO2, 1 to 45 parts by weight of V2O5, 0.05 to 15 parts by weight of at least two metal oxides selected from the group consisting of Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0.05 to 5 parts by weight of P2O5 and 0.05 to 5 parts by weight of Nb2O5.
Claim 4
Dependent Claim
91 words
A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containing gas consisting essentially of a catalytic material supported on an inert carrier, said catalytic material consisting essentially of 100 parts by weight of TiO2, 1 to 45 parts by weight of V2O5, 0.05 to 15 parts by weight of at least two metal oxides selected from the group consisting of Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0.05 to 5 parts by weight of P2O5 and 0.05 to 5 parts by weight of Nb2O5.
Claim 5
Dependent Claim
91 words
A CATALYST FOR THE PREPARATION OF ANTHRAQUINONE BY VAPOR PHASE OXIDATION OF ANTHRACENE WITH A MOLECULAR OXYGENCONTAINING GAS CONSISTING ESSENTIALLY OF A CATALYSTIC MATERIAL SUPPORTED ON AN INERT CARRIER, SAID CATALYTIC MATERIAL CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF TIO2, 1 TO 45 PARTS BY WEIGHT OF V205, 0.05 TO 15 PARTS BY WEIGHT OF AT LEAST TWO METAL OXIDES SELECTED FROM THE GROUP CONSISTING OF LI2O, NA2O, K2O, RB2O, CS2O AND TL2O, 0.05 TO 5 PARTS BY WEIGHT OF P2O5 AND 0.05 TO 5 PARTS BY WEIGHT OF NB2O5.
Claim 6
Dependent Claim
91 words
A CATALYST FOR THE PREPARATION OF ANTHRAQUINONE BY VAPOR PHASE OXIDATION OF ANTHRACENE WITH A MOLECULAR OXYGENCONTAINING GAS CONSISTING ESSENTIALLY OF A CATALYSTIC MATERIAL SUPPORTED ON AN INERT CARRIER, SAID CATALYTIC MATERIAL CONSISTING ESSENTIALLY OF 100 PARTS BY WEIGHT OF TIO2, 1 TO 45 PARTS BY WEIGHT OF V205, 0.05 TO 15 PARTS BY WEIGHT OF AT LEAST TWO METAL OXIDES SELECTED FROM THE GROUP CONSISTING OF LI2O, NA2O, K2O, RB2O, CS2O AND TL2O, 0.05 TO 5 PARTS BY WEIGHT OF P2O5 AND 0.05 TO 5 PARTS BY WEIGHT OF NB2O5.
Claim 7
Dependent Claim
27 words
A catalyst according to claim 2, wherein the titanium is employed in the form of titanium dioxide having a BET surface area of 1 to 80 m2/g.
Claim 8
Dependent Claim
27 words
A catalyst according to claim 2, wherein the titanium is employed in the form of titanium dioxide having a BET surface area of 3 to 50 m2/g.
Claim 9
Dependent Claim
13 words
A catalyst according to claim 3, wherein the titanium dioxide is anatase type.
Claim 10
Dependent Claim
13 words
A catalyst according to claim 3, wherein the titanium dioxide is rutile type.
Claim 11
Dependent Claim
32 words
A catalyst according to claim 3, wherein the titanium dioxide is a mixture of 95 to 0 percent by weight of anatase type and, correspondingly, 5 to 100 percent of rutile type.
Claim 12
Dependent Claim
31 words
A catalyst according to claim 3, wherein the inert carrier is at least one material selected from the group consisting of alpha-alumina, silex, quartz, silicon carbide, aluminum silicate and magnesium silicate.
Claim 13
Dependent Claim
91 words
A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containiNg gas consisting essentially of a catalytic material supported on an inert carrier, said catalytic material consisting essentially of 100 parts by weight of TiO2, 2 to 35 parts by weight of V2O5, 0.5 to 10 parts by weight of at least two metal oxides selected from the group consisting of Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0.05 to 5 parts by weight of P2O5 and 0.05 to 5 parts by weight of Nb2O5.
Claim 14
Dependent Claim
91 words
A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containiNg gas consisting essentially of a catalytic material supported on an inert carrier, said catalytic material consisting essentially of 100 parts by weight of TiO2, 2 to 35 parts by weight of V2O5, 0.5 to 10 parts by weight of at least two metal oxides selected from the group consisting of Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0.05 to 5 parts by weight of P2O5 and 0.05 to 5 parts by weight of Nb2O5.
Claim 15
Dependent Claim
91 words
A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containing gas consisting essentially of a catalytic material supported on an inert carrier, said catalytic material consisting essentially of 100 parts by weight of TiO2, 1 to 45 parts by weight of V2O5, 0.05 to 15 parts by weight of at least two metal oxides selected from the group consisting of, Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0.05 to 3 parts by weights of P2O5, and 0.05 to 3 parts by weight of Nb2O5.
Claim 16
Dependent Claim
91 words
A catalyst for the preparation of anthraquinone by vapor phase oxidation of anthracene with a molecular oxygen-containing gas consisting essentially of a catalytic material supported on an inert carrier, said catalytic material consisting essentially of 100 parts by weight of TiO2, 1 to 45 parts by weight of V2O5, 0.05 to 15 parts by weight of at least two metal oxides selected from the group consisting of, Li2O, Na2O, K2O, Rb2O, Cs2O and Tl2O, 0.05 to 3 parts by weights of P2O5, and 0.05 to 3 parts by weight of Nb2O5.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |