US4711869A
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Silica-titania hydrocarbon conversion catalyst
Assignee: BASF Corp
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Filing: 1985-11-08
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Granted: 1987-12-08
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Expires: 2005-11-08
Abstract
Abstract Crystalline silica-titania catalyst compositions, optionally containing magnesium, are disclosed; the titanium is introduced through the use of organo-titanate chelates wherein the titanium has a coordination number of at least 5. The compositions are used in acid-catalyzed reactions such as alkylation reactions.
Inventors
- 👤 Leonard A. Cullo
- 👤 Francis J. Shiring, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/16; B; B01; B01J; B01J29/00; B01J29/89; C07C1/00; C07C1/20; C07C1/24; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C5/00; C07C5/22; C07C5/2206; C07C2529/00; C07C2529/89; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P30/00; Y02P30/20; Y02P30/40
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
143 words
Method of making a catalyst useful in hydrocarbon conversion reactions comprising (a) combining about one part of an aqueous sodium silicate solution containing about 12% to about 13% SiO 2 , at a SiO 2 to Na 2 O weight ratio of about 3.22 with about 0.94 parts of a second, clear aqueous solution of an organo-titanate chelate containing 0.18 to 0.32% titanium as TiO 2 and wherein the titanium has a coordination number of at least 5, 0.24 to 0.26 gram-equivalents per liter of a tetra-alkyl ammonium halide or hydroxide, up to 0.12 gram-equivalents per liter of a magnesium salt, and about 3.3 to about 3.5 gram-equivalents per liter of sodium chloride, to form a gel, (b) crystallizing the gel by extended hydrothermal treatment, (c) washing the crystallized gel, (d) calcining the washed crystallized gel, and (e) removing residual alkali metal therefrom.
Claim 2
Dependent Claim
143 words
Method of making a catalyst useful in hydrocarbon conversion reactions comprising (a) combining about one part of an aqueous sodium silicate solution containing about 12% to about 13% SiO 2 , at a SiO 2 to Na 2 O weight ratio of about 3.22 with about 0.94 parts of a second, clear aqueous solution of an organo-titanate chelate containing 0.18 to 0.32% titanium as TiO 2 and wherein the titanium has a coordination number of at least 5, 0.24 to 0.26 gram-equivalents per liter of a tetra-alkyl ammonium halide or hydroxide, up to 0.12 gram-equivalents per liter of a magnesium salt, and about 3.3 to about 3.5 gram-equivalents per liter of sodium chloride, to form a gel, (b) crystallizing the gel by extended hydrothermal treatment, (c) washing the crystallized gel, (d) calcining the washed crystallized gel, and (e) removing residual alkali metal therefrom.
Claim 3
Dependent Claim
18 words
Method of claim 1 wherein the titanium compound solution comprises 0.2 to 0.5% Ti as TiO 2 .
Claim 4
Dependent Claim
21 words
Method of claim 1 wherein the titanium solution also contains from 0.06 to 0.12 gram-equivalents per liter of a magnesium salt.
Claim 5
Dependent Claim
49 words
A calcined crystalline titania-silica catalyst having a molar ratio of 0.015 to 0.04 TiO 2 :1.0 SiO 2 and an X-ray diffraction pattern characterized by peaks as follows: ______________________________________
2θ d (A) I/Io × 100
______________________________________
7.75 11.39 49
8.30 10.64 13
8.70 10.16 100
13.70 6.46 13.
______________________________________
Claim 6
Dependent Claim
49 words
A calcined crystalline titania-silica catalyst having a molar ratio of 0.015 to 0.04 TiO 2 :1.0 SiO 2 and an X-ray diffraction pattern characterized by peaks as follows: ______________________________________
2θ d (A) I/Io × 100
______________________________________
7.75 11.39 49
8.30 10.64 13
8.70 10.16 100
13.70 6.46 13.
______________________________________
Claim 7
Dependent Claim
53 words
A calcined crystalline titania-magnesia-silica catalyst having molar ratios of 0.015 to 0.04 TiO 2 :1.0 SiO 2 and 0.08 to 0.17 MgO, and an X-ray diffraction pattern characterized by peaks as follows: ______________________________________
2θ d (A) I/Io × 100
______________________________________
7.90 11.18 31
8.80 10.04 20
20.70 4.29 17
21.90 4.06 100.
______________________________________
Claim 8
Dependent Claim
53 words
A calcined crystalline titania-magnesia-silica catalyst having molar ratios of 0.015 to 0.04 TiO 2 :1.0 SiO 2 and 0.08 to 0.17 MgO, and an X-ray diffraction pattern characterized by peaks as follows: ______________________________________
2θ d (A) I/Io × 100
______________________________________
7.90 11.18 31
8.80 10.04 20
20.70 4.29 17
21.90 4.06 100.
______________________________________
Claim 9
Dependent Claim
16 words
Method of claim 1 wherein the organo-titanate chelate is a lactic acid chelate of titanium VI.
Claim 10
Dependent Claim
14 words
Method of claim 1 wherein the organo-titanate chelate is the triethanolamine chelate of titanium.
Claim 11
Dependent Claim
25 words
A calcined crystalline titania-magnesia-silica catalyst having the molar ratios 0.015 to 0.04 TiO 2 , and 0.08 to 0.17 MgO to 1.0 SiO 2 .
Claim 12
Dependent Claim
25 words
A calcined crystalline titania-magnesia-silica catalyst having the molar ratios 0.015 to 0.04 TiO 2 , and 0.08 to 0.17 MgO to 1.0 SiO 2 .
Claim 13
Dependent Claim
36 words
A calcined crystalline titania-magnesia-silica catalyst composition having an X-ray diffraction pattern characterized by peaks as follows: ______________________________________
2θ d(A) I/Io × 100
______________________________________
8.0 11.04 25
8.95 9.87 100
17.9 4.95 24
23.15 3.84 42.
______________________________________
Claim 14
Dependent Claim
36 words
A calcined crystalline titania-magnesia-silica catalyst composition having an X-ray diffraction pattern characterized by peaks as follows: ______________________________________
2θ d(A) I/Io × 100
______________________________________
8.0 11.04 25
8.95 9.87 100
17.9 4.95 24
23.15 3.84 42.
______________________________________
Claim 15
Dependent Claim
45 words
In a method of making a titanium-containing silica-based catalyst composition wherein a silica solution and a titanium-containing solution are combined, dried and calcined, the improvement comprising employing as the titanium-containing component an organo-titanate chelate wherein the titanium has a coordinate number of at least 5.
Claim 16
Dependent Claim
45 words
In a method of making a titanium-containing silica-based catalyst composition wherein a silica solution and a titanium-containing solution are combined, dried and calcined, the improvement comprising employing as the titanium-containing component an organo-titanate chelate wherein the titanium has a coordinate number of at least 5.
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) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |