US4172856A
Expired / Lapsed
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Olefins
Assignee: Imperial Chemical Industries Ltd
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Filing: 1978-05-05
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Granted: 1979-10-30
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Expires: 1998-05-05
Abstract
Abstract Olefins are produced by reacting a feedstock containing a hydrocarbon containing 2 or more carbon atoms in the molecule and/or a hydrocarbon derivative containing hydrogen-carbon links over a catalyst comprising "FU-1," which is a zeolite-like silica-containing material characterized inter alia by chemical composition and X-ray diffraction pattern. The feedstock is preferably methanol or dimethyl ether. The predominant olefin product can be controlled according to the reaction conditions used. Conversion to aromatics is very low.
Inventors
- 👤 Michael S. Spencer
- 👤 Thomas V. Whittam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:47
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/80; C07C4/00; C07C4/02; C07C4/06; B01J2229/00; B01J2229/30; B01J2229/37; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70; C10; C10G; C10G2400/00; C10G2400/20; Y; Y02; Y02P; Y02P30/00; Y02P30/20; Y02P30/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
130 words
A process for making an olefin containing 6 or fewer carbon atoms in the molecule which comprises reacting a feedstock comprising a volatilizable hydrocarbon containing 2 or more carbon atoms in the molecule and/or a hydrocarbon derivative containing hydrogen-carbon links over a catalyst comprising the silica-containing material FU-1 having the chemical composition 0.6 to 1.4 R.sub.2 O.Al.sub.2 O.sub.3. over 5 SiO.sub.2.0 to 40 H.sub.2 O where R is a monovalent cation or 1/n of a cation of valency n, and having an X-ray pattern including the following characteristic lines: ______________________________________
d (A) 100 I/Io d (A) 100 I/Io
______________________________________
9.51 31 4.48 6
8.35 8 4.35 13
6.92 28 4.07 19
6.61 9 4.00 9.4
6.26 9 3.89 13
5.25 16 3.73 28
4.61 63 3.68 3
3.44 100
______________________________________
Claim 2
Dependent Claim
130 words
A process for making an olefin containing 6 or fewer carbon atoms in the molecule which comprises reacting a feedstock comprising a volatilizable hydrocarbon containing 2 or more carbon atoms in the molecule and/or a hydrocarbon derivative containing hydrogen-carbon links over a catalyst comprising the silica-containing material FU-1 having the chemical composition 0.6 to 1.4 R.sub.2 O.Al.sub.2 O.sub.3. over 5 SiO.sub.2.0 to 40 H.sub.2 O where R is a monovalent cation or 1/n of a cation of valency n, and having an X-ray pattern including the following characteristic lines: ______________________________________
d (A) 100 I/Io d (A) 100 I/Io
______________________________________
9.51 31 4.48 6
8.35 8 4.35 13
6.92 28 4.07 19
6.61 9 4.00 9.4
6.26 9 3.89 13
5.25 16 3.73 28
4.61 63 3.68 3
3.44 100
______________________________________
Claim 3
Dependent Claim
26 words
A process according to claim 1 in which the FU-1 contains less than 500 ppm w/w of alkali metal compounds calculated as equivalent Na 2 O.
Claim 4
Dependent Claim
23 words
A process according to claim 1 in which the FU-1 contains less than 2% w/w of quaternary ammonium compound calculated as elementary carbon.
Claim 5
Dependent Claim
16 words
A process according to claim 1 in which the catalyst contains the calcium-hydrogen form of FU-1.
Claim 6
Dependent Claim
18 words
A process according to claim 1 in which the feedstock is a normally gaseous or a volatilisable hydrocarbon.
Claim 7
Dependent Claim
14 words
A process according to claim 1 in which the feedstock is an oxygenated hydrocarbon.
Claim 8
Dependent Claim
12 words
A process according to claim 6 in which the feedstock is methanol.
Claim 9
Dependent Claim
42 words
A process according to claim 1 in which the reaction temperature is in the range 350-400° C. when the product olefin is to contain 4 to 6 carbon atoms or 425-525° C. when ethylene and/or propylene are to be the main products.
Claim 10
Dependent Claim
44 words
A process according to claim 6 in which the reaction product is treated to separate methane, carbon oxides, water and any hydrogen and to recover the required olefin or olefins, and in which unwanted other products are at least partly recycled to the reaction.
Claim 11
Dependent Claim
39 words
A process according to claim 1 in combination with a process of synthesis of hydrocarbons and/or oxygenated hydrocarbons by catalytic reaction of carbon oxides with hydrogen, the FU-1 catalyst being disposed so as to act on the synthesis products.
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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |