US4086187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attrition resistant zeolitic catalyst
Assignee: HARSHAW/FILTROL PARTNERSHIP A PARTNERSHIP OF
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Filing: 1976-06-17
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Granted: 1978-04-25
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Expires: 1996-06-17
Abstract
Abstract Attrition resistant zeolitic catalysts containing silica, alumina and clay components.
Inventors
- 👤 John Lim
- 👤 Dennis Stamires
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:34
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J37/0027; B01J37/0045; B01J29/00; B01J29/04; B01J29/06; B01J29/08; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B01J2229/00; B01J2229/30; B01J2229/42; B01J35/00; B01J35/60; B01J35/66; Y; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/504
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
48 words
A water slurry consisting essentially of a mixture of a zeolite of the faujasite type having a Na content, expressed as Na 2 O 3 , of less than about 5% by weight of the zeolite, a kaolin clay, alumina in the form of pseudoboehmite and ammonium polysilicate.
Claim 2
Dependent Claim
48 words
A water slurry consisting essentially of a mixture of a zeolite of the faujasite type having a Na content, expressed as Na 2 O 3 , of less than about 5% by weight of the zeolite, a kaolin clay, alumina in the form of pseudoboehmite and ammonium polysilicate.
Claim 3
Dependent Claim
71 words
The slurry of claim 1 in which the weight ratio of the components is about 10 parts to about 30 parts of the zeolite, about 13 parts to about 20 parts of the polysilicate expressed as SiO 2 , about 20 parts to about 50 parts of kaolin, about 10 parts to about 30 parts of pseudoboehmite expressed as Al 2 O 3 , all of the foregoing totaling 100 parts.
Claim 4
Dependent Claim
44 words
The slurry of claim 1 in which the ammonium polysilicate is an ionic solution in which the ratio of the moles of NH 4 to the moles of SiO 2 in the polysilicate ion is in the range of about 4 to about 14.
Claim 5
Dependent Claim
44 words
The slurry of claim 2 in which the ammonium polysilicate is an ionic solution in which the ratio of the moles of NH 4 to the moles of SiO 2 in the polysilicate ion is in the range of about 4 to about 14.
Claim 6
Dependent Claim
47 words
A spray-dried cracking catalyst produced by spray drying a water slurry of a mixture of a zeolite of the faujasite type having a Na content, expressed as Na 2 O, of less than about 5% by weight of the zeolite, a kaolin clay, pseudoboehmite and ammonium polysilicate.
Claim 7
Dependent Claim
47 words
A spray-dried cracking catalyst produced by spray drying a water slurry of a mixture of a zeolite of the faujasite type having a Na content, expressed as Na 2 O, of less than about 5% by weight of the zeolite, a kaolin clay, pseudoboehmite and ammonium polysilicate.
Claim 8
Dependent Claim
74 words
The catalyst of claim 5 in which the weight ratio of the components in the slurry is about 10 parts to about 30 parts of the zeolite, about 13 parts to about 20 parts of the polysilicate expressed as SiO 2 , about 20 parts to about 50 parts of kaolin, about 10 parts to about 30 parts of alumina expressed as Al 2 O 3 , all of the foregoing totaling 100 parts.
Claim 9
Dependent Claim
47 words
The catalyst of claim 5 in which the ammonium polysilicate in the slurry is an ionic solution in which the ratio of the moles of NH 4 to the moles of SiO 2 in the polysilicate ion is in the range of about 4 to about 14.
Claim 10
Dependent Claim
45 words
The catalyst of claim 6 in which the ammonium polysilicate in the slurry is an ionic solution in which the ratio of the moles NH 4 to the moles SiO 2 in the polysilicate ion is in the range of about 4 to about 14.
Claim 11
Dependent Claim
18 words
The catalyst of claim 5 in which the attrition index 1 sigma value is less than about 5.
Claim 12
Dependent Claim
33 words
The catalyst of claim 5 in which the volume of the pores in the range of about 50 to about 200 Angstrom is in excess of about 50% of the total pore volume.
Claim 13
Dependent Claim
18 words
The catalyst of claim 10 in which the attrition index 1 sigma value is less than about 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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |