US3960978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Converting low molecular weight olefins over zeolites
Assignee: Mobil Oil AS
•
Filing: 1974-09-05
•
Granted: 1976-06-01
•
Expires: 1994-09-05
Abstract
Abstract Gaseous C2-C5 olefins, either alone or in admixture with paraffins, are converted into an olefinic gasoline blending stock with a good research octane number in good yields by passage over a ZSM-5 type zeolite catalyst of controlled acidity. The catalyst must have reduced activity for cracking of n-hexane or aromatization of olefins or paraffins if it is to be useful for the purpose of this invention.
Inventors
- 👤 Edwin N. Givens
- 👤 Charles J. Plank
- 👤 Edward J. Rosinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:59
CPC Classifications
C; C10; C10G; C10G50/00; C10G2400/00; C10G2400/02; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A process for producing a gasoline fraction having therein no more than about 20% by weight of aromatics, said process comprising contacting a C 2 -C 5 olefin, mixtures thereof or mixtures thereof with paraffins having from 1 to 5 carbon atoms with a crystalline aluminosilicate zeolite selected from the group consisting of ZSM-5 and ZSM-11 and having an α-value of from about 0.1 to about 120, at a WHSV of from about 0.1 to about 25 and at a temperature of from about 500°F to about 900°F, whereby said gasoline fraction containing predominantly higher olefins is obtained.
Claim 2
Dependent Claim
98 words
A process for producing a gasoline fraction having therein no more than about 20% by weight of aromatics, said process comprising contacting a C 2 -C 5 olefin, mixtures thereof or mixtures thereof with paraffins having from 1 to 5 carbon atoms with a crystalline aluminosilicate zeolite selected from the group consisting of ZSM-5 and ZSM-11 and having an α-value of from about 0.1 to about 120, at a WHSV of from about 0.1 to about 25 and at a temperature of from about 500°F to about 900°F, whereby said gasoline fraction containing predominantly higher olefins is obtained.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein the zeolite is ZSM-5.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the α-value is from about 0.1 to about 100.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein a proportion of the original cations associated with the zeolite are replaced by another cation.
Claim 6
Dependent Claim
13 words
The process of claim 4 wherein the replacing cation is a metal cation.
Claim 7
Dependent Claim
11 words
The process of claim 5 wherein the metal cation is nickel.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein the catalyst used is in the H-form.
Claim 9
Dependent Claim
11 words
The process of claim 5 wherein the replacing cation is zinc.
Claim 10
Dependent Claim
11 words
The process of claim 5 wherein the replacing cation is chromium.
Claim 11
Dependent Claim
18 words
The process of claim 1 wherein the low aromatization activity is a result of steam treating the zeolite.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein the zeolite is incorporated in a matrix.
Claim 13
Dependent Claim
18 words
The process of claim 1 wherein the gasoline fraction has a research octane number of 90 or above.
References Cited (Backward Citations)
US3236762A
Cited
US3325465A
Cited
US3760024A
Cited
US3756942A
Cited
US3775501A
Cited
US3827968A
Cited
US3845150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |