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1. DK1817258 - Forbedret fremgangsmåde til fremstilling af ZSM-5-zeolitter

Office
Denmark
Application Number 05795991
Application Date 25.10.2005
Publication Number 1817258
Publication Date 06.06.2011
Grant Number
Grant Date 06.06.2011
Publication Kind T3
IPC
C01B 39/38
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
36Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
38Type ZSM-5
C01B 39/40
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
36Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
38Type ZSM-5
40using at least one organic template directing agent
CPC
C01B 39/40
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
36Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
38Type ZSM-5
40using at least one organic template directing agent
C01B 39/38
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
36Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
38Type ZSM-5
Applicants SASOL ITALY S.p.A.
Inventors ZATTA, Agostino
Title
(DA) Forbedret fremgangsmåde til fremstilling af ZSM-5-zeolitter
Abstract
(EN) Process for the synthesis of ZMS-5 zeolites essentially consisting of: a. preparing two aqueous solutions of sodium aluminate and silicate; b. putting the two solutions in contact with each other under stirring at room temperature; c. adding a solution of a mineral acid to solution (a) or to solution (b) or to solution (a) + (b), in such a quantity that the molar ratio OH-/H20 ranges from 0.02 to 0.03; d. adding a quantity of water sufficient for maintaining fluid the reacting mixture and the molar ratio OH-/H20 from 0.017 to 0.022; e. pre-heating the final mixture obtained at the end of steps (a) - (d) at a temperature ranging from 20 to 60°C; and f. heating the mixture, under stirring, at a temperature ranging from 100 to 200°C.