US3894104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatization of hetero-atom substituted hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1973-08-09
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Granted: 1975-07-08
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Expires: 1993-08-09
Abstract
Abstract Improved aromatization of alcohols, ethers, carbonyl containing compounds and analogues thereof by carrying out the aromatization at about 500* to 850*F in contact with a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, and preferably a crystal density in the hydrogen form of not substantially below about 1.6 grams per cubic centimeter, which zeolite has at least one metal of Groups Ib, IIa, IIb, IIIa, IVa, or VIII incorporated therein.
Inventors
- 👤 Clarence D Chang
- 👤 William H Lang
- 👤 Anthony J Silvestri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:42
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/42; B01J29/46; B01J29/18; B01J29/405; B01J29/44; C; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/45; C10G3/47; C10G3/48; C10G3/49; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C07; C07C; C07C2521/00; C07C2521/02; C07C2521/04; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/42; C07C2529/44; C07C2529/46; C07C2529/65; C07C2529/70; C10G2300/00; C10G2300/40; C10G2300/4018; C10G2400/00; C10G2400/30; Y; Y02; Y02P; Y02P30/00; Y02P30/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
IN THE PROCESS FOR CONVERTING A FEED COMPRISING COMPOUNDS OF THE TYPE (R)N - X WHERE R IS A LOWER HYDROCARBON MOIETY HAVING 1 CARBON ATOM, X IS A HETERO MOIETY SELECTED FROM THE GROUP CONSISTING OF OXYGEN, HYDROXYL, SULFUR, NITROGEN, HALOGEN AND CYANIDE AND N IS A NUMBER UP TO THE VALENCE OF X, TO OTHER COMPOUNDS HAVING A HIGHER RATIO OF R TO X THAN IN THE FEED BY CONTACTING SUCH FEED WITH A CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST, HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12 AND A CONSTRAINT INDEX OF ABOUT 1 TO 12, AT AN ELEVATED TEMPERATURE OF ABOUT 500 TO ABOUT 750*F AT A SPACE VELOCITY OF ABOUT 0.1 TO 50 LHSV, THE IMPROVEMENT, WHEREBY TO PRODUCE A PRODUCT WHICH IS PREDOMINANTLY NORMALLY LIQUID HYDROCARBON CONTAINING A LARGER PROPORTION OF AROMATICS, WHICH COMPRISES UTILIZING AS SAID CATALYST SAID ZEOLITE WHICH HAS BEEN MODIFIED BY THE INCORPORATION THEREWITH OF AT LEAST ONE METAL OF GROUPS IB, IIA, IIIA, IVA AND VIII OF THE PEIODIC TABLE.
Claim 2
Dependent Claim
172 words
IN THE PROCESS FOR CONVERTING A FEED COMPRISING COMPOUNDS OF THE TYPE (R)N - X WHERE R IS A LOWER HYDROCARBON MOIETY HAVING 1 CARBON ATOM, X IS A HETERO MOIETY SELECTED FROM THE GROUP CONSISTING OF OXYGEN, HYDROXYL, SULFUR, NITROGEN, HALOGEN AND CYANIDE AND N IS A NUMBER UP TO THE VALENCE OF X, TO OTHER COMPOUNDS HAVING A HIGHER RATIO OF R TO X THAN IN THE FEED BY CONTACTING SUCH FEED WITH A CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST, HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12 AND A CONSTRAINT INDEX OF ABOUT 1 TO 12, AT AN ELEVATED TEMPERATURE OF ABOUT 500 TO ABOUT 750*F AT A SPACE VELOCITY OF ABOUT 0.1 TO 50 LHSV, THE IMPROVEMENT, WHEREBY TO PRODUCE A PRODUCT WHICH IS PREDOMINANTLY NORMALLY LIQUID HYDROCARBON CONTAINING A LARGER PROPORTION OF AROMATICS, WHICH COMPRISES UTILIZING AS SAID CATALYST SAID ZEOLITE WHICH HAS BEEN MODIFIED BY THE INCORPORATION THEREWITH OF AT LEAST ONE METAL OF GROUPS IB, IIA, IIIA, IVA AND VIII OF THE PEIODIC TABLE.
Claim 3
Dependent Claim
15 words
The improved process claimed in claim 1 wherein the feed comprises methanol or dimethyl ether.
Claim 4
Dependent Claim
12 words
The improved process claimed in claim 2 wherein said zeolite is ZSM-5.
Claim 5
Dependent Claim
36 words
the improved process claimed in claim 3 wherein said modifying metal is at least one metal selected from the group consisting of magnesium, calcium, copper, zinc, cadmium, aluminum, indium, tin, ruthenium, cobalt, nickel, palladium, and platinum.
Claim 6
Dependent Claim
28 words
The improved process claimed in claim 4 wherein said metal is present in an effective amount up to about 10 weight percent based upon the total catalyst composition.
Claim 7
Dependent Claim
14 words
The improved process claimed in claim 4 wherein said catalyst is in a matrix.
Claim 8
Dependent Claim
13 words
The improved process claimed in claim 4 wherein said modifying metal is zinc.
Claim 9
Dependent Claim
28 words
The improved process claimed in claim 2 wherein said zeolite has a crystal density, in the hydrogen form, of not substantially below about 1.6 grams per cubic centimeter.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |