US4593138A
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Catalytic isomerisation process employing zeolite EU-1
Assignee: IFP Energies nouvelles
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Filing: 1985-06-14
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Granted: 1986-06-03
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Expires: 2005-06-14
Abstract
Abstract A new zeolite material designated EU-1 having a molar composition expressed by the formula: 0.5 to 1.5 R 2 O : Y 2 O 3 : at least 10 XO 2 : O to 100 H 2 O wherein R is a monovalent cation or 1/n of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, gallium or boron, and H 2 O is water of hydration additional to water notionally present when R is H, and having an X-ray pattern substantially as set out in Tables 1 and 2 is prepared from a reaction mixture containing XO 2 (preferably silica), Y 2 O 3 (preferably alumina) and a dicationic alkylated polymethylene diamine. The new zeolite is useful in catalytic processes, especially xylenes isomerisation.
Inventors
- 👤 John L. Casci
- 👤 Barrie M. Lowe
- 👤 Thomas V. Whittam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:49
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7023; B01J29/72; B01J29/7246; C; C01; C01B; C01B39/00; C01B39/02; C01B39/46; C01B39/48; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2705; C07C5/2708; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S423/00; Y10S423/36
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A catalytic process for the isomerisation of aromatic hydrocarbons employing a catalyst comprising zeolite EU-1 having a molar composition expressed by the formula: 0.5 to 1.5 R.sub.2 O:Y.sub.2 O.sub.3 :at least 10 XO.sub.2 :0 to 100 H.sub.2 O wherein R is a monovalent cation or 1/n of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminum, iron, gallium or boron, and H 2 O is water of hydration additional to water notionally present when R is H, and having, when freshly prepared, an X-ray deffraction pattern as shown in Table 1, wherein said method comprises the step of contacting said catalyst, under isomerisation conditions, with a feedstock which includes said aromatic hydrocarbons.
Claim 2
Dependent Claim
120 words
A catalytic process for the isomerisation of aromatic hydrocarbons employing a catalyst comprising zeolite EU-1 having a molar composition expressed by the formula: 0.5 to 1.5 R.sub.2 O:Y.sub.2 O.sub.3 :at least 10 XO.sub.2 :0 to 100 H.sub.2 O wherein R is a monovalent cation or 1/n of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminum, iron, gallium or boron, and H 2 O is water of hydration additional to water notionally present when R is H, and having, when freshly prepared, an X-ray deffraction pattern as shown in Table 1, wherein said method comprises the step of contacting said catalyst, under isomerisation conditions, with a feedstock which includes said aromatic hydrocarbons.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the feedstock includes an alkylbenzene or a mixture of alkylbenzenes and is contacted with the catalyst under isomerisation conditions.
Claim 4
Dependent Claim
21 words
A process according to claim 2 wherein the alkylbenzene or mixture of alkylbenzenes comprises a xylene or a mixture of xylenes.
Claim 5
Dependent Claim
56 words
A process as claimed in claim 3 wherein the isomerisation is carried out in the vapour phase at a temperature in the range 100° to 600° C., a pressure in the range 0.5 to 50 atmospheres absolute and in the absence of added free hydrogen and wherein the catalyst comprises zeolite EU-1 containing no hydrogenation/dehydrogenation component.
Claim 6
Dependent Claim
69 words
A process as claimed in claim 3 wherein the isomerisation is carried out in the vapour phase in the presence of added free hydrogen at a temperature in the range 100° to 600° C., a pressure in the range of 0.5 to 50 atmospheres absolute, a mole ratio of hydrogen to alkylbenzene in the range 3:1 to 30:1 and wherein the catalyst comprises zeolite EU-1 containing a hydrogenation/dehydrogenation component.
Claim 7
Dependent Claim
22 words
A process as claimed in claim 5 wherein the catalyst comprises EU-1 containing a metal of Group VIII of the Periodic Table.
Claim 8
Dependent Claim
56 words
A process as claimed in claim 3 wherein the isomerisation is carried out in the liquid phase at a temperature in the range 0° to 350° C., a pressure in the range 1 to 200 atmospheres absolute and, where a flow system is used, at a weight hourly space velocity in the range 1 to 30.
Claim 9
Dependent Claim
33 words
A process as claimed in claim 7 wherein the liquid phase isomerisation is carried out in the absence of added free hydrogen and wherein the catalyst comprises zeolite EU-1 containing no hydrogenation/dehydrogenation component.
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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |