FR2392934A1 - ZEOLITE PREPARATION PROCESS - Google Patents

ZEOLITE PREPARATION PROCESS

Info

Publication number
FR2392934A1
FR2392934A1 FR7816284A FR7816284A FR2392934A1 FR 2392934 A1 FR2392934 A1 FR 2392934A1 FR 7816284 A FR7816284 A FR 7816284A FR 7816284 A FR7816284 A FR 7816284A FR 2392934 A1 FR2392934 A1 FR 2392934A1
Authority
FR
France
Prior art keywords
mineral
zeolite
preparation process
degrees
calcined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7816284A
Other languages
French (fr)
Other versions
FR2392934B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imerys Minerals Ltd
Original Assignee
English Clays Lovering Pochin Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by English Clays Lovering Pochin Co Ltd filed Critical English Clays Lovering Pochin Co Ltd
Publication of FR2392934A1 publication Critical patent/FR2392934A1/en
Application granted granted Critical
Publication of FR2392934B1 publication Critical patent/FR2392934B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • C01B33/28—Base exchange silicates, e.g. zeolites
    • C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
    • C01B33/2815—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of type A (UNION CARBIDE trade name; corresponds to GRACE's types Z-12 or Z-12L)
    • C01B33/283—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of type A (UNION CARBIDE trade name; corresponds to GRACE's types Z-12 or Z-12L) from a reaction mixture containing at least one aluminium silicate or aluminosilicate of a clay-type, e.g. kaolin or metakaolin or its exotherm modification or allophane

Abstract

L'invention concerne un procédé de préparation de zéolite à partir d'un minéral de type kandite, dépourvu d'agrégats et n'ayant pratiquement pas de fer superficiel associé et moins de 0,5 % en poids de fer interstitiel. Ce minéral est calciné entre 550 et 925 degrés C, puis chauffé entre 60 et 100 degrés C en présence d'une solution d'hydroxyde de sodium d'environ 5M, les proportions de minéral calciné et d'hydroxyde de sodium dans le mélange étant telles que le rapport molaire Na20/SiO2 est compris entre 0,5 et 1,5. Application à la préparation de zéolite A présentant une meilleure blancheur.The invention relates to a process for preparing zeolite from a kandite-type mineral, devoid of aggregates and having substantially no associated surface iron and less than 0.5% by weight of interstitial iron. This mineral is calcined between 550 and 925 degrees C, then heated between 60 and 100 degrees C in the presence of a solution of sodium hydroxide of about 5M, the proportions of calcined mineral and sodium hydroxide in the mixture being such that the Na 2 O / SiO 2 molar ratio is between 0.5 and 1.5. Application to the preparation of zeolite A exhibiting better whiteness.

FR7816284A 1977-05-31 1978-05-31 ZEOLITE PREPARATION PROCESS Granted FR2392934A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2304977A GB1603084A (en) 1977-05-31 1977-05-31 Zeolites

Publications (2)

Publication Number Publication Date
FR2392934A1 true FR2392934A1 (en) 1978-12-29
FR2392934B1 FR2392934B1 (en) 1983-08-19

Family

ID=10189284

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816284A Granted FR2392934A1 (en) 1977-05-31 1978-05-31 ZEOLITE PREPARATION PROCESS

Country Status (5)

Country Link
CA (1) CA1101825A (en)
DE (1) DE2823927A1 (en)
ES (1) ES470368A1 (en)
FR (1) FR2392934A1 (en)
GB (1) GB1603084A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125390B (en) * 1982-08-16 1985-12-24 Ici Plc Preparation of zeolites
US5089056A (en) * 1989-04-21 1992-02-18 Thiele Kaolin Company Opacifying kaolin pigments and process for making same by reacting with sodium hydroxide in water
DE10142899B4 (en) * 2000-09-04 2006-01-19 Bundesrepublik Deutschland, vertreten durch den Präsidenten der Bundesanstalt für Geowissenschaften und Rohstoffe Process for the synthesis of high-purity NaA zeolite from untreated allophan-rich loams

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1264441A (en) * 1960-08-05 1961-06-19 Grace W R & Co Process for the preparation of synthetic crystalline zeolites

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114603A (en) * 1960-01-15 1963-12-17 Union Carbide Corp Process for synthetic zeolite a

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1264441A (en) * 1960-08-05 1961-06-19 Grace W R & Co Process for the preparation of synthetic crystalline zeolites

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CA1977 *

Also Published As

Publication number Publication date
CA1101825A (en) 1981-05-26
FR2392934B1 (en) 1983-08-19
GB1603084A (en) 1981-11-18
DE2823927C2 (en) 1987-01-22
ES470368A1 (en) 1979-01-16
DE2823927A1 (en) 1978-12-14

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Legal Events

Date Code Title Description
ST Notification of lapse