US4394251A
Expired / Lapsed
US
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Hydrocarbon conversion with crystalline silicate particle having an aluminum-containing outer shell
Assignee: Chevron USA Inc
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Filing: 1981-04-28
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Granted: 1983-07-19
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Expires: 2001-04-28
Abstract
Abstract Hydrocarbon conversion processes with crystalline silicates surrounded by an alumina containing isostructural shell are claimed.
Inventors
- 👤 Stephen J. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:42
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2876; C10G35/00; C10G35/04; C10G35/06; C10G35/095; C10G49/00; C10G49/02; C10G49/08; B01J2229/00; B01J2229/60; B01J2229/62; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
131 words
A hydrocarbon conversion process, comprising contacting, under hydrocarbon conversion conditions, a hydrocarbonaceous feedstock with a particle, comprising an inner portion and an outer portion disposed as a shell around said inner portion wherein said outer portion has the same crystal structure as said inner portion, said inner portion comprising an intermediate pore size crystalline silicate having a silica:alumina mole ratio greater than about 200:1, and said outer portion having a silica:alumina mole ratio of less than about 100:1 and wherein said particle is prepared by a process comprising: (1) initiating crystallization in a crystallization medium substantially free of aluminum to produce the intermediate pore size crystalline silicate; (2) adding a source of aluminum to said crystallization medium; and (3) crystallizing onto said crystalline silicate the isostructural outer portion which comprises alumina.
Claim 2
Dependent Claim
131 words
A hydrocarbon conversion process, comprising contacting, under hydrocarbon conversion conditions, a hydrocarbonaceous feedstock with a particle, comprising an inner portion and an outer portion disposed as a shell around said inner portion wherein said outer portion has the same crystal structure as said inner portion, said inner portion comprising an intermediate pore size crystalline silicate having a silica:alumina mole ratio greater than about 200:1, and said outer portion having a silica:alumina mole ratio of less than about 100:1 and wherein said particle is prepared by a process comprising: (1) initiating crystallization in a crystallization medium substantially free of aluminum to produce the intermediate pore size crystalline silicate; (2) adding a source of aluminum to said crystallization medium; and (3) crystallizing onto said crystalline silicate the isostructural outer portion which comprises alumina.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein said crystalline silicate has the X-ray diffraction pattern of ZSM-5.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein said crystalline silicate has the X-ray diffraction pattern of ZSM-11.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said process is hydrocracking.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein said process is catalytic cracking.
Claim 7
Dependent Claim
10 words
The process of claim 1 wherein said process is reforming.
Claim 8
Dependent Claim
10 words
The process of claim 1 wherein said process is hydroisomerization.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein said process is olefin isomerization.
Claim 10
Dependent Claim
11 words
The process of claim 1 wherein said process is olefin polymerization.
Claim 11
Dependent Claim
11 words
The process of claim 1 wherein said process is catalytic dewaxing.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein said process comprises stabilizing lube oil stocks.
Claim 13
Dependent Claim
142 words
A hydrocarbon conversion process, comprising contacting, under hydrocarbon conversion conditions, a hydrocabonaceous feedstock with a particle, comprising an inner portion and an outer portion disposed as a shell around said inner portion wherein said outer portion has the same crystal structure as said inner portion, said inner portion comprising an intermediate pore size crystalline silicate having a silica:alumina mole ratio greater than about 200:1, and said outer portion having a silica:alumina mole ratio of less than about 100:1 and wherein said particle is prepared by a process comprising: (1) crystallizing the intermediate pore size crystalline silicate from a first reaction medium substantially free of aluminum; (2) removing said crystalline silicate from said first reaction medium; (3) adding said crystalline silicate to a second reaction medium comprising sources of aluminum, and (4) crystallizing the isostructural, alumina containing outer layer onto said crystalline silicate.
Claim 14
Dependent Claim
142 words
A hydrocarbon conversion process, comprising contacting, under hydrocarbon conversion conditions, a hydrocabonaceous feedstock with a particle, comprising an inner portion and an outer portion disposed as a shell around said inner portion wherein said outer portion has the same crystal structure as said inner portion, said inner portion comprising an intermediate pore size crystalline silicate having a silica:alumina mole ratio greater than about 200:1, and said outer portion having a silica:alumina mole ratio of less than about 100:1 and wherein said particle is prepared by a process comprising: (1) crystallizing the intermediate pore size crystalline silicate from a first reaction medium substantially free of aluminum; (2) removing said crystalline silicate from said first reaction medium; (3) adding said crystalline silicate to a second reaction medium comprising sources of aluminum, and (4) crystallizing the isostructural, alumina containing outer layer onto said crystalline silicate.
Claim 15
Dependent Claim
10 words
The process of claim 12, wherein said process is hydrocracking.
Claim 16
Dependent Claim
15 words
The process of claim 12 wherein said particle has the X-ray diffraction pattern of ZSM-5.
Claim 17
Dependent Claim
15 words
The process of claim 12 wherein said particle has the X-ray diffraction pattern of ZSM-11.
References Cited (Backward Citations)
US4148713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |