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Zeolite synthesis

Assignee: Imperial Chemical Industries Ltd
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Filing: 1982-10-08
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Granted: —
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Expires: 2002-10-08
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Abstract

Abstract Zeolite Nu-10 is prepared from a reaction mixture containing at least one oxide XO 2 (where X is preferably silicon), at least one oxide Y 2 0 3 (where Y is preferably aluminium), and, optionally at least one organic compound selected from (i) compounds of formula L 1 -(CH 2 ) n -L 2 where L' and L 2 independently represent a hydroxyl group or an optionally substituted amino group and n is an integer from 2 to 20, provided that when both L' and L are optionally substituted amino groups, n is an integer from 6 to 20 and (ii) heterocyclic bases. Preferred organic compounds are diamines, diols and heterocyclic di- or mono-amines. The reaction mixture also includes an alkali metal hydroxide, sodium, potassium and rubidium being particularly suitable. Zeolite Nu-10 is useful as a catalyst for various hydrocarbon conversion reactions, for the conversion of small oxygen-containing organic molecules to hydrocarbons and as an agent for the removal of organic compounds from aqueous effluents.

Inventors

  • 👤 Barrie Milner Lowe
  • 👤 Abraham Araya

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-26 12:08
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/1009; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2869; C01B33/2876; C01B33/2884

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 139 words
A method for the preparation of zeolite Nu-10 which comprises reacting an aqueous mixture containing sources of at least one oxide XO 2 , at least one oxide Y 2 O 3 and, optionally at least one organic compound selected from: (a) compounds of the formula: wherein each of L 1 and L 2 , independently, represents a hydroxyl or an optionally substituted amino group and n is an integer from 2 to 20, provided that when both L 1 and L 2 are optionally substituted amino groups n is an integer from,6 to 20, and (b) heterocyclic bases, the reaction mixture having the molar composition: wherein each of M and M 2 represents an alkali metal, ammonium or hydrogen, Q represents the organic compound, X and Y have the meanings given above and Z represents an acid radical.
Claim 2
Independent Claim 139 words
A method for the preparation of zeolite Nu-10 which comprises reacting an aqueous mixture containing sources of at least one oxide XO 2 , at least one oxide Y 2 O 3 and, optionally at least one organic compound selected from: (a) compounds of the formula: wherein each of L 1 and L 2 , independently, represents a hydroxyl or an optionally substituted amino group and n is an integer from 2 to 20, provided that when both L 1 and L 2 are optionally substituted amino groups n is an integer from,6 to 20, and (b) heterocyclic bases, the reaction mixture having the molar composition: wherein each of M and M 2 represents an alkali metal, ammonium or hydrogen, Q represents the organic compound, X and Y have the meanings given above and Z represents an acid radical.
Claim 3
Dependent Claim 16 words
A method as claimed in claim 1 in which the reaction mixture has the molar composition:
Claim 4
Dependent Claim 49 words
A method as claimed in claim 1 or 2 in which the reaction mixture contains a diamine of formula wherein each of R 3 to R 6 , independently, represents hydrogen or a C 1 to C 6 alkyl group and n is an integer from 6 to 20.
Claim 5
Dependent Claim 13 words
A method as claimed in claim 3 in which the diamine is hexamethylenediamine.
Claim 6
Independent Claim 18 words
A method as claimed in any one of the preceding claims in which the reaction mixture contains 1,6-hexanediol.
Claim 7
Independent Claim 24 words
A method as claimed in any one of the preceding claims in which the alkali metal is selected from sodium, potassium, rubidium and caesium.
Claim 8
Dependent Claim 29 words
A method as claimed in claim 6 in which the reaction mixture contains a mixture of alkali metals selected from (a) rubidium and sodium and (b) rubidium and potassium.
Claim 9
Independent Claim 28 words
A method as claimed in any one of the preceding claims in which the oxide X0 2 is silica and the oxide Y 2 O 3 is alumina.
Claim 10
Independent Claim 23 words
A method as claimed in any one of the preceding claims in which the reaction temperature is in the range 130 to 220°C.

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