FR2386484A1 - PROCESS FOR PREPARING A FINELY DIVIDED-TYPE ZEOLITE - Google Patents

PROCESS FOR PREPARING A FINELY DIVIDED-TYPE ZEOLITE

Info

Publication number
FR2386484A1
FR2386484A1 FR7810425A FR7810425A FR2386484A1 FR 2386484 A1 FR2386484 A1 FR 2386484A1 FR 7810425 A FR7810425 A FR 7810425A FR 7810425 A FR7810425 A FR 7810425A FR 2386484 A1 FR2386484 A1 FR 2386484A1
Authority
FR
France
Prior art keywords
degrees
preparing
temperature
finely divided
type zeolite
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.)
Withdrawn
Application number
FR7810425A
Other languages
French (fr)
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of FR2386484A1 publication Critical patent/FR2386484A1/en
Withdrawn legal-status Critical Current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)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

La présente invention concerne un procédé de préparation de zéolite A, présentant une taille de cristallite de 0,1 à 6 microns essentiellement, par réaction hydrothermique de kaolin calciné avec des hydroxydes alcalins aqueux. On disperse le kaolin dans un courant gazeux, porté à une température de 600 à 1 000 degrés C, et, après un temps de séjour dans ce courant gazeux de 0,01 à 5 secondes, on le met en suspension à une température supérieure à 300 degrés C dans une solution aqueuse contenant 4 à 20 % en poids d'hydroxyde de sodium et on maintient la suspension obtenue pendant 0,5 à 6 heures à une température de 70 à 100 degrés C. Les zéolites ainsi obtenues sont utiles en tant qu'adsorbants, par exemple pour sécher des liquides.The present invention relates to a process for preparing zeolite A, having a crystallite size of 0.1 to 6 microns essentially, by hydrothermal reaction of calcined kaolin with aqueous alkali hydroxides. The kaolin is dispersed in a gas stream, brought to a temperature of 600 to 1000 degrees C, and, after a residence time in this gas stream of 0.01 to 5 seconds, it is suspended at a temperature above 300 degrees C in an aqueous solution containing 4 to 20% by weight of sodium hydroxide and the resulting suspension is kept for 0.5 to 6 hours at a temperature of 70 to 100 degrees C. The zeolites thus obtained are useful as as adsorbents, for example for drying liquids.

FR7810425A 1977-04-09 1978-04-07 PROCESS FOR PREPARING A FINELY DIVIDED-TYPE ZEOLITE Withdrawn FR2386484A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772715934 DE2715934A1 (en) 1977-04-09 1977-04-09 METHOD OF MANUFACTURING FINE PARTICLE ZEOLITE A

Publications (1)

Publication Number Publication Date
FR2386484A1 true FR2386484A1 (en) 1978-11-03

Family

ID=6006021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7810425A Withdrawn FR2386484A1 (en) 1977-04-09 1978-04-07 PROCESS FOR PREPARING A FINELY DIVIDED-TYPE ZEOLITE

Country Status (9)

Country Link
JP (1) JPS53125996A (en)
BE (1) BE865771A (en)
BR (1) BR7802172A (en)
DE (1) DE2715934A1 (en)
ES (1) ES468629A1 (en)
FR (1) FR2386484A1 (en)
GB (1) GB1571264A (en)
IT (1) IT7848796A0 (en)
NL (1) NL7803736A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004225A1 (en) * 1978-03-02 1979-09-19 Rhone-Poulenc Chimie Process for the manufacture of a synthetic silicoaluminate and products obtained

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926400A1 (en) * 1988-08-12 1990-02-22 Degussa Sodium A zeolite with small particle size - used as phosphate substitute and in liq. washing compsn.
GB2224725A (en) * 1988-09-20 1990-05-16 Watts Blake Bearne & Co Ltd Ball clay products
EP0360547B1 (en) * 1988-09-20 1993-07-21 WATTS BLAKE BEARNE & CO. PLC Clay composition and method of casting

Citations (3)

* 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
FR1343946A (en) * 1962-12-12 1963-11-22 Grace W R & Co Process for manufacturing microselective adsorbents and in particular sodium zeolites
FR83942E (en) * 1963-06-10 1964-11-06 Grace W R & Co Process for manufacturing micro-selective adsorbents and in particular sodium zeolites

Patent Citations (3)

* 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
FR1343946A (en) * 1962-12-12 1963-11-22 Grace W R & Co Process for manufacturing microselective adsorbents and in particular sodium zeolites
FR83942E (en) * 1963-06-10 1964-11-06 Grace W R & Co Process for manufacturing micro-selective adsorbents and in particular sodium zeolites

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004225A1 (en) * 1978-03-02 1979-09-19 Rhone-Poulenc Chimie Process for the manufacture of a synthetic silicoaluminate and products obtained

Also Published As

Publication number Publication date
ES468629A1 (en) 1978-12-01
GB1571264A (en) 1980-07-09
BE865771A (en) 1978-10-09
JPS53125996A (en) 1978-11-02
DE2715934A1 (en) 1978-10-19
NL7803736A (en) 1978-10-11
IT7848796A0 (en) 1978-04-07
BR7802172A (en) 1979-02-13

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