FR2146618A5 - Synthetic potassium zeolites - with improved thermal stability by direct synthesis - Google Patents

Synthetic potassium zeolites - with improved thermal stability by direct synthesis

Info

Publication number
FR2146618A5
FR2146618A5 FR7126678A FR7126678A FR2146618A5 FR 2146618 A5 FR2146618 A5 FR 2146618A5 FR 7126678 A FR7126678 A FR 7126678A FR 7126678 A FR7126678 A FR 7126678A FR 2146618 A5 FR2146618 A5 FR 2146618A5
Authority
FR
France
Prior art keywords
direct synthesis
thermal stability
improved thermal
zeolites
sio2
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.)
Expired
Application number
FR7126678A
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.)
Herrmann Gebrueder
Original Assignee
Herrmann Gebrueder
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
Priority to DE19702029242 priority Critical patent/DE2029242A1/en
Application filed by Herrmann Gebrueder filed Critical Herrmann Gebrueder
Priority to FR7126678A priority patent/FR2146618A5/en
Application granted granted Critical
Publication of FR2146618A5 publication Critical patent/FR2146618A5/en
Expired legal-status Critical Current

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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
    • C01B33/2869—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 other types characterised by an X-ray spectrum and a definite composition

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)

Abstract

Direct synthesis of K zeolites, with SiO2:Al2O3 molar ratio 2.5 and effective pore dia. preventing entry of benzene molecules comprises adding Al2O3 carrier in water-insoluble form to (partly) aqs. soln. of KOH, opt. containing K2SiO3 and keeping resultant reaction mixture, after thorough stirring, at >40 degrees C until crystals of zeolite concerned have formed. Suitable alumina carriers include synthetic Al (meta) silicate and SiO2 hydrogel or tempered xerogel containing Al(OH)3.
FR7126678A 1970-06-13 1971-07-21 Synthetic potassium zeolites - with improved thermal stability by direct synthesis Expired FR2146618A5 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19702029242 DE2029242A1 (en) 1970-06-13 1970-06-13 Synthetic potassium zeolites - with improved thermal stability by direct synthesis
FR7126678A FR2146618A5 (en) 1970-06-13 1971-07-21 Synthetic potassium zeolites - with improved thermal stability by direct synthesis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702029242 DE2029242A1 (en) 1970-06-13 1970-06-13 Synthetic potassium zeolites - with improved thermal stability by direct synthesis
FR7126678A FR2146618A5 (en) 1970-06-13 1971-07-21 Synthetic potassium zeolites - with improved thermal stability by direct synthesis

Publications (1)

Publication Number Publication Date
FR2146618A5 true FR2146618A5 (en) 1973-03-02

Family

ID=43929205

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7126678A Expired FR2146618A5 (en) 1970-06-13 1971-07-21 Synthetic potassium zeolites - with improved thermal stability by direct synthesis

Country Status (2)

Country Link
DE (1) DE2029242A1 (en)
FR (1) FR2146618A5 (en)

Also Published As

Publication number Publication date
DE2029242A1 (en) 1971-12-23

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Legal Events

Date Code Title Description
ST Notification of lapse