EP0187522A2
Expired / Lapsed
EP
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Zeolite beta preparation
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-12-23
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Granted: —
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Expires: 2005-12-23
Abstract
Abstract Zeolite is prepared with increased yields and/or reduced cost in a process comprising crystallising a gel having the composition: The product may be used in catalytic or adsorption applications.
Inventors
- 👤 Dominicus J.M. Van Der Vleugel
- 👤 Johannes W.M. Walterbos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 12:55
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/80; B01J29/70; B01J29/7007; C; C01; C01B; C01B39/00; C01B39/02; C01B39/46; C01B39/48
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
A process for the preparation of zeolite beta, in which a reaction mixture comprising sources of sodium, tetraethylammonium (TEA) cations, silicon and water, optionally with a seeding quantity of zeolite beta, and having the following molar ratios of components (expressed in terms of oxides): is heated at a temperature of at least-75°C until zeolite beta is formed.
Claim 2
Dependent Claim
57 words
A process for the preparation of zeolite beta, in which a reaction mixture comprising sources of sodium, tetraethylammonium (TEA) cations, silicon and water, optionally with a seeding quantity of zeolite beta, and having the following molar ratios of components (expressed in terms of oxides): is heated at a temperature of at least-75°C until zeolite beta is formed.
Claim 3
Dependent Claim
54 words
A process as claimed in claim 1, in which the reaction mixture is formed by first mixing powdered sources of sodium oxide , silica and alumina, optionally with zeolite beta seeds and without the addition of any substantial amount of water and thereafter combining the mixed powder with an aqueous solution containing TEA cations.
Claim 4
Dependent Claim
23 words
A process as claimed in claim 1 or claim 2, in which the reaction mixture comprises the components in the following molar ratios:
Claim 5
Dependent Claim
20 words
A process as claimed in claim 3, in which the reaction mixture comprises the components in the following molar ratios:
Claim 6
Dependent Claim
21 words
5 A process as claimed in claim 4, in which the ratio Na 2 0/TEA 2 0 = 0.4 - 0.8
Claim 7
Dependent Claim
27 words
A process as claimed in any of claims 1 to 5, in which the zeolite beta seeds comprise from 0.1 to 1.0 wt% of the reaction mixture.
Claim 8
Dependent Claim
23 words
A process as claimed in claim 6, in which the zeolite beta seeds comprise from 0.1 to 0.4 wt% of the reaction mixture.
Claim 9
Dependent Claim
29 words
8 . A process as claimed in any of claims 1 to 7, in which the crystallization is carried out at temperatures in the range of 100°C to 250°C.
Claim 10
Dependent Claim
51 words
9 . A zeolite beta catalyst comprising a zeolite beta prepared by a process as claimed in any of claims 1 to 8 optionally having sodium replaced in part by a Group IA, IIA, IIIA or transition metal, and a metal of Groups VB, VIB or VIII of the Periodic Table.
Claim 11
Dependent Claim
19 words
An adsorbent comprising a zeolite beta prepared by a process as claimed in any of claims 1 to 9.
References Cited (Backward Citations)
No citation records indexed.
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