EP0119027A2
Expired / Lapsed
EP
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Improving catalytic activity of aluminosilicate zeolites
Assignee: BP PLC
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Filing: 1984-02-23
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Granted: —
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Expires: 2004-02-23
Abstract
Abstract This invention relates to a method of improving the catalytic activity of a freshly made zeolite loaded with gallium ions by first treating with steam and then with hydrogen. Steam and hydrogen treatment may be carried out before or after loading with gallium simultaneously or successively. It has been found that a combination of steam and hydrogen treatments gives high conversions of hydrocarbon feeds and high selectivity to aromatics.
Inventors
- 👤 Brian Richard Gane
- 👤 Philip Howard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:32
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/90; B01J29/04; B01J29/06; B01J29/061; C; C07; C07C; C07C2/00; C07C2523/00; C07C2523/08; C07C2529/00; C07C2529/04; C07C2529/06; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
46 words
A process for activating an aluminosilicate zeolite loaded with a gallium compound as catalyst said process comprising bringing into contact the zeolite, before or after loading thereof with gallium, with steam and concurrently or separately with hydrogen, both stages being carried out at an elevated temperature.
Claim 2
Dependent Claim
46 words
A process for activating an aluminosilicate zeolite loaded with a gallium compound as catalyst said process comprising bringing into contact the zeolite, before or after loading thereof with gallium, with steam and concurrently or separately with hydrogen, both stages being carried out at an elevated temperature.
Claim 3
Dependent Claim
21 words
A process according to claim 1 wherein the zeolites are aluminosilicates which have a silica to alumina ratio greater than 5:1.
Claim 4
Dependent Claim
108 words
A process according to claims 1 or 2 wherein the various sequences in which the steps of calcination (C), steaming (S), loading (G) with an active catalyst component, and binding (B) is carried out on the zeolite are selected from: a) C (s) * G B b) C (s) * B G c) C S G B d) C S B G e) C G S B f) C G B S g) C B G S h) C B S G i) B C (s) * G j) B C S G k). B C G S wherein * C (s) - represents simultaneous calcination and steaming.
Claim 5
Dependent Claim
32 words
A process according to any one of the preceding claims wherein the steam treatment of the zeolite is suitably caried out using steam as such or a carrier gas stream comprising steam.
Claim 6
Dependent Claim
47 words
A process according to any one of the preceeding claims wherein the steam treatment is carried out at a pressure of between 0.01 and 1.0 MPa and a temperature between 300 and 750°C, duration of between 5 minutes and 200 hours, preferably between 1 and 12 hours.
Claim 7
Dependent Claim
28 words
A process according to any one of the preceeding claims wherein the hydrogen treatment step is carried out after the zeolite has been loaded with the gallium compound.
Claim 8
Dependent Claim
30 words
A process according to any one of the preceeding claims wherein the steam treatment step precedes the gallium loading step and the hydrogen treatment follows steam treatment and gallium loading.
Claim 9
Dependent Claim
29 words
A process according to any one of the preceeding claims wherein the hydrogen treatment is carried out in a gaseous stream containing between 1 and 100% volume of hydrogen.
Claim 10
Dependent Claim
29 words
A process according to any one of the preceeding claims wherein the hydrogen treatment is carried out at 450° to 700°C and a pressure of 0.01 to 1.0 MPa,.
Claim 11
Dependent Claim
47 words
A process according to claim 1 wherein the steam and hydrogen treatments are carried out on a gallium loaded zeolite, which has been wholly or partially deactivated in use as a hydrocarbon conversion catalyst, as part of a regeneration procedure to restore and improve the activity thereof.
References Cited (Backward Citations)
No citation records indexed.
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