GB1077268A - Process for the preparation of modified zeolitic adsorbents - Google Patents

Process for the preparation of modified zeolitic adsorbents

Info

Publication number
GB1077268A
GB1077268A GB4403664A GB4403664A GB1077268A GB 1077268 A GB1077268 A GB 1077268A GB 4403664 A GB4403664 A GB 4403664A GB 4403664 A GB4403664 A GB 4403664A GB 1077268 A GB1077268 A GB 1077268A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
water
arsenite
zeolite
soluble
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
GB4403664A
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.)
WR Grace and Co
Original Assignee
WR Grace and Co
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 WR Grace and Co filed Critical WR Grace and Co
Publication of GB1077268A publication Critical patent/GB1077268A/en
Expired 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
    • C01B33/2884—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 the aluminium or the silicon in the network being partly replaced

Landscapes

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

Abstract

Zeolitic adsorbents of formula (0.5-1.1)M2O.Al2O3.(1.4-3.6)SiO2. (0.001-0.65)Z2On.(0-7.2)H2O wherein M is an alkali metal and Z2On is B2O3, P2O5, As2O3 or As2O5 are prepared by admixing with agitation aqueous solutions of a water-soluble aluminium salt, of a water-soluble alkali metal silicate, and of a water-soluble borate, phosphate, arsenite or arsenate or a mixture thereof at pH 1.2 to 13.0, thereby forming a precipitate, further agitating the reactant mixture for at least 5 minutes in said pH range, adding caustic alkali solution, subsequently maintaining the reaction mixture at between 35 DEG and 180 DEG C. until the zeolite has crystallized, and then separating from the mother liquor, drying and calcining the zeolite. The aluminium salt may be aluminium sulphate, the alkali metal silicate may be sodium metasilicate, orthosilicate, the borate may be metaborate, the arsenate, phosphate may be tertiary alkali metal salt, the arsenite may be meta-arsenite. The precipitate may be aged after separation for at least one day, say at pH 5.5 to 6.5 and resuspended in water before addition of caustic alkali. The crystallized product may be washed to pH 7 to 10. The alkali metal ion in the zeolite may be replaced by base exchange.
GB4403664A 1963-10-31 1964-10-28 Process for the preparation of modified zeolitic adsorbents Expired GB1077268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES88121A DE1204642B (en) 1963-10-31 1963-10-31 Process for preparing molecular sieves containing diadochic ions

Publications (1)

Publication Number Publication Date
GB1077268A true GB1077268A (en) 1967-07-26

Family

ID=7514244

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4403664A Expired GB1077268A (en) 1963-10-31 1964-10-28 Process for the preparation of modified zeolitic adsorbents

Country Status (2)

Country Link
DE (1) DE1204642B (en)
GB (1) GB1077268A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3160829D1 (en) * 1980-01-24 1983-10-13 United States Borax Chem Method of making clayware

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038017B (en) * 1953-12-24 1958-09-04 Union Carbide Corp Process for making crystalline zeolitic molecular sieves
DE1038016B (en) * 1953-12-24 1958-09-04 Union Carbide Corp Process for making crystalline zeolitic molecular sieves
DE1038015B (en) * 1955-06-20 1958-09-04 Union Carbide Corp Process for the production of synthetic zeolitic molecular sieves
DE1098927B (en) * 1957-08-26 1961-02-09 Union Carbide Corp Process for making crystalline zeolitic molecular sieves
DE1138383B (en) * 1961-03-23 1962-10-25 Union Carbide Corp Method of making zeolite X.

Also Published As

Publication number Publication date
DE1204642B (en) 1965-11-11

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