Patent US4289740A successfully refreshed from Google Patents.
US4289740A
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Crystalline zeolite HP
Assignee: Texaco Inc
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Filing: 1979-11-07
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Granted: 1981-09-15
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Expires: 1999-11-07
Abstract
Abstract A novel crystalline zeolite composition is prepared by conducting the hydrothermal crystallization and, preferably, a preliminary aging step, at high pressure, i.e. pressures in excess of 20,000 psig (ca 138 MPa) and preferably above about 40,000 psig (ca 276 MPa megaPascals). The crystalline zeolite, designated zeolite HP, has a higher aluminum content than zeolite X and a lattice constant of above about 25.02 A.
Inventors
- 👤 John H. Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:17
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/20; C01B39/22
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
82 words
The process for preparing sodium zeolite HP which comprises: a. forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; b. maintaining said aqueous mixture at hydrothermal conditions including a pressure above 20,000 psig (ca. 138 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours; and c. recovering crystalline zeolite comprising sodium zeolite HP as the resulting solid product.
Claim 2
Dependent Claim
82 words
The process for preparing sodium zeolite HP which comprises: a. forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; b. maintaining said aqueous mixture at hydrothermal conditions including a pressure above 20,000 psig (ca. 138 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours; and c. recovering crystalline zeolite comprising sodium zeolite HP as the resulting solid product.
Claim 3
Dependent Claim
15 words
The process claimed in claim 1 wherein the time of step (b) is 4-24 hours.
Claim 4
Dependent Claim
50 words
The process claimed in claim 1 including the following additional step subsequent to step (a) and prior to step (b); (d) aging said aqueous mixture of step (a) for at least 8 hours at a pressure above 20,000 psig (ca.138 MPa) and a temperature not above 100° F. (31.8° C.).
Claim 5
Dependent Claim
17 words
The process claimed in claim 3 wherein the time of step (d) is 24 to 72 hours.
Claim 6
Dependent Claim
16 words
The process claimed in claim 3 wherein the temperature of step (d) is about room temperature.
Claim 7
Dependent Claim
126 words
The process for preparing sodium zeolite HP which comprises: a. forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; b. aging said aqueous mixture at aging conditions including a time of at least 8 hours at a pressure of 20,000-80,000 psig (ca 138-ca 552 MPa) and a temperature not above 100° F. (37.8° C.) thereby forming an aged aqueous mixture; c. maintaining said aged aqueous mixture at hydrothermal conditions including pressure of 20,000-80,000 psig (ca 138-ca 552 MPa) and a temperature of 150°-350° F. (55.6°-176.7° C.) for 4-24 hours thereby forming crystalline zeolite comprising sodium zeolite HP; and d. recovering said crystalline zeolite comprising sodium zeolite HP.
Claim 8
Dependent Claim
126 words
The process for preparing sodium zeolite HP which comprises: a. forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; b. aging said aqueous mixture at aging conditions including a time of at least 8 hours at a pressure of 20,000-80,000 psig (ca 138-ca 552 MPa) and a temperature not above 100° F. (37.8° C.) thereby forming an aged aqueous mixture; c. maintaining said aged aqueous mixture at hydrothermal conditions including pressure of 20,000-80,000 psig (ca 138-ca 552 MPa) and a temperature of 150°-350° F. (55.6°-176.7° C.) for 4-24 hours thereby forming crystalline zeolite comprising sodium zeolite HP; and d. recovering said crystalline zeolite comprising sodium zeolite HP.
Claim 9
Dependent Claim
83 words
The process for preparing sodium zeolite HP which comprises: a. forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; b. maintaining said aqueous mixture at a pressure above 40,000 psig (ca. 276 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours thereby forming crystalline zeolite comprising sodium zeolite HP; and c. recovering said crystalline zeolite comprising sodium zeolite HP.
Claim 10
Dependent Claim
83 words
The process for preparing sodium zeolite HP which comprises: a. forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; b. maintaining said aqueous mixture at a pressure above 40,000 psig (ca. 276 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours thereby forming crystalline zeolite comprising sodium zeolite HP; and c. recovering said crystalline zeolite comprising sodium zeolite HP.
Claim 11
Dependent Claim
27 words
The process claimed in claim 7 wherein the pressure of step (b) is above 40,000 psig (ca. 276 MPa) and below about 80,000 psig (ca. 552 MPa).
Claim 12
Dependent Claim
19 words
The process claimed in claim 7 wherein the pressure of step (b) is about 50,000 psig (ca. 345 MPa).
Claim 13
Dependent Claim
15 words
The process claimed in claim 7 wherein the time of step (b) is 4-24 hours.
Claim 14
Dependent Claim
51 words
The process claimed in claim 7 including the following additional step subsequent to step (a) and prior to step (b): (d) aging said aqueous mixture of step (a) for at least 8 hours at a pressure above 40,000 psig (ca. 276 MPa) and a temperature not above 100° F. (37.8° C.).
Claim 15
Dependent Claim
27 words
The process claimed in claim 11 wherein the pressure of step (d) is above 40,000 psig (ca. 276 MPa) and below about 80,000 psig (ca. 552 MPa).
Claim 16
Dependent Claim
19 words
The process claimed in claim 11 wherein the pressure of step (d) is about 50,000 psig (ca. 345 MPa).
Claim 17
Dependent Claim
17 words
The process claimed in claim 11 wherein the time of step (d) is 24 to 72 hours.
Claim 18
Dependent Claim
16 words
The process claimed in claim 11 wherein the temperature of step (c) is about room temperature.
Claim 19
Dependent Claim
128 words
The process for preparing sodium zeolite HP which comprises (a) forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silica atoms to aluminum atoms of between about 0.25 and about 1.0; (b) aging said aqueous mixture at aging conditions including a time of at least 8 hours at a pressure of 40,000-50,000 psig (ca. 276 MPa-ca 345 MPa) and a temperature not above 100° F. (37.8° C.) thereby forming an aged aqueous mixture; (c) maintaining said aged aqueous mixture at hydrothermal conditions including pressure of 40,000-50,000 psig (ca. 276 MPa-ca. 345 MPa) and a temperature of 150° F.-350° F. (55.6°-176.7° C.) for 4-24 hours thereby forming crystalline zeolite comprising sodium zeolite HP; and recovering said crystalline zeolite comprising sodium zeolite HP.
Claim 20
Dependent Claim
128 words
The process for preparing sodium zeolite HP which comprises (a) forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silica atoms to aluminum atoms of between about 0.25 and about 1.0; (b) aging said aqueous mixture at aging conditions including a time of at least 8 hours at a pressure of 40,000-50,000 psig (ca. 276 MPa-ca 345 MPa) and a temperature not above 100° F. (37.8° C.) thereby forming an aged aqueous mixture; (c) maintaining said aged aqueous mixture at hydrothermal conditions including pressure of 40,000-50,000 psig (ca. 276 MPa-ca. 345 MPa) and a temperature of 150° F.-350° F. (55.6°-176.7° C.) for 4-24 hours thereby forming crystalline zeolite comprising sodium zeolite HP; and recovering said crystalline zeolite comprising sodium zeolite HP.
Claim 21
Dependent Claim
16 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.01 A -25.0 A.
Claim 22
Dependent Claim
16 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.01 A -25.0 A.
Claim 23
Dependent Claim
30 words
A synthetic crystalline sodium aluminosilicate zeolite having lattice constant between about 25.02 and 25.10 A and an atom ratio of silicon to aluminum in the unit cell of below 1.00.
Claim 24
Dependent Claim
30 words
A synthetic crystalline sodium aluminosilicate zeolite having lattice constant between about 25.02 and 25.10 A and an atom ratio of silicon to aluminum in the unit cell of below 1.00.
Claim 25
Dependent Claim
41 words
A synthetic crystalline sodium aluminosilicate zeolite characterized by a lattice constant of about 25.02-25.10 A, (ii) an atom ratio of Si to Al in the unit cell below 1.0, and (iii) substantially 100% ion exchange capacity for NH 4 + ions.
Claim 26
Dependent Claim
41 words
A synthetic crystalline sodium aluminosilicate zeolite characterized by a lattice constant of about 25.02-25.10 A, (ii) an atom ratio of Si to Al in the unit cell below 1.0, and (iii) substantially 100% ion exchange capacity for NH 4 + ions.
Claim 27
Dependent Claim
94 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A prepared by the process which comprises (a) forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; (b) maintaining said aqueous mixture at hydrothermal conditions including a pressure above 20,000 psig (ca. 138 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours; and (c) recovering crystalline zeolite comprising said sodium zeolite as the resulting solid product.
Claim 28
Dependent Claim
94 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A prepared by the process which comprises (a) forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; (b) maintaining said aqueous mixture at hydrothermal conditions including a pressure above 20,000 psig (ca. 138 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours; and (c) recovering crystalline zeolite comprising said sodium zeolite as the resulting solid product.
Claim 29
Dependent Claim
29 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 20 wherein the time of step (b) is 4-24 hours.
Claim 30
Dependent Claim
65 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 20 including the following additional step subsequent to step (a) and prior to step (b): (d) aging said aqueous mixture of step (a) for at least 8 hours at a pressure above 20,000 psig (ca. 138 MPa) and a temperature not above 100° F. (37.8° C.).
Claim 31
Dependent Claim
29 words
A syntheetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 22 wherein the time of step (d) is 24-72 hours.
Claim 32
Dependent Claim
30 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 22 wherein the temperature of step (d) is about room temperature.
Claim 33
Dependent Claim
88 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A prepared by the process which comprises; (a) forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; (b) maintaining said aqueous mixture at a pressure above 40,000 psig (ca. 276 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours; and (c) recovering said sodium zeolite as the resulting solid product.
Claim 34
Dependent Claim
88 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A prepared by the process which comprises; (a) forming an aqueous mixture of sodium aluminosilicate having a composition sufficient to establish a ratio of silicon atoms to aluminum atoms of between about 0.25 and about 1.0; (b) maintaining said aqueous mixture at a pressure above 40,000 psig (ca. 276 MPa) and a temperature of 150°-350° F. (65.6°-176.7° C.) for at least three hours; and (c) recovering said sodium zeolite as the resulting solid product.
Claim 35
Dependent Claim
40 words
A synthetic crystalline sodium alumionsilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 25 wherein the pressure of step (b) is above 40,000 psig (ca. 276 MPa) and below about 80,000 (ca. 552 MPa).
Claim 36
Dependent Claim
32 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 25 wherein the pressure of step (b) is about 50,000 (ca. 345 Mpa).
Claim 37
Dependent Claim
29 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 25 wherein the time of step (b) is 4-24 hours.
Claim 38
Dependent Claim
64 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 25 including the following additional step subsequent to step (a) and prior to step (b): d. aging said aqueous mixture of step (a) for at least 8 hours at a pressure above 40,000 (ca. 276 MPa) and a temperature not above 100° F. (37.8° C.).
Claim 39
Dependent Claim
39 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 29 wherein the pressure of step (d) is above 40,000 psig (276 MPa) and below about 80,000 psig (552 MPa).
Claim 40
Dependent Claim
33 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 29 wherein the pressure of step (d) is about 50,000 psig (ca. 345 MPa).
Claim 41
Dependent Claim
31 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 29 wherein the time of step (d) is 24 to 72 hours.
Claim 42
Dependent Claim
30 words
A synthetic crystalline sodium aluminosilicate zeolite, having a lattice constant of about 25.02 A-25.10 A as claimed in claim 29 wherein the temperature of step (d) is about room temperature.
References Cited (Backward Citations)
US2882244A
Cited
US2979381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |