GB841812A - "improvements in and relating to zeolites" - Google Patents

"improvements in and relating to zeolites"

Info

Publication number
GB841812A
GB841812A GB27151/58A GB2715158A GB841812A GB 841812 A GB841812 A GB 841812A GB 27151/58 A GB27151/58 A GB 27151/58A GB 2715158 A GB2715158 A GB 2715158A GB 841812 A GB841812 A GB 841812A
Authority
GB
United Kingdom
Prior art keywords
na2o
al2o3
sio2
moles
sodium
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
GB27151/58A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB841812A publication Critical patent/GB841812A/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
    • C01B33/2869—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

Abstract

A synthetic crystalline sodium aluminosilicate zeolitic molecular sieve, designated as "zeolite R" has a formula 0.9 \sB 0.2 Na2O: Al2O3:3.45-3.65 SiO2:XH2O. X for the full hydrated form is about 7. Its characteristic X-ray powder diffraction pattern is quoted. The sodium form may be ion-exchanged with solutions containing mono or divalent ions, particularly, lithium, magnesium, zinc, potassium, strontium, barium, or mixtures of these cations. The initial sodium aluminium silicate is prepared by heating a mixture of sodium aluminate, alkali and sodium silicate in closely controlled Na2O/SiO2, SiO2/Al2O3, and H2O/Na2O ratios at temperatures at 25 to 150 DEG C. until crystals are formed. The required silicate may be provided by an aqueous colloidal silica sol, and the sodium content may be adjusted by sodium hydroxide. According to examples (1) a mixture of sodium aluminate, silica sol and water were employed to form a mixture having a composition per mole of Al2O3 of 1.6 moles Na2O, four moles SiO2 and 64 moles of H2O. This mixture was heated at 100 DEG C. for 16 hours and the crystals analysed 0.95 Na2O:Al2O3 3.64 SiO2:.49 H2O. Using the same reactants but with 36 moles of H2O, a zeolite of formula 0.95 Na2O:Al2O3: 3.54 SiO2:6.1 H2O was formed. (2) A mixture as in (1) above containing per mole of Al2O3, 2 moles of Na2O, 4 moles of silica and 80 moles of H2O while heated at 120 DEG C. for 3.5 hours and the resulting white crystals analysed 0.95 Na2O : Al2O3 : 3.61 SiO2 : 5.4 H2O. The crystals are dehydrated by heating under vacuum at 350 DEG C. or heating in a stream of air. The zeolite is thereby activated and functions as an adsorbant selective for polar adsorbates. In particular zeolite R is useful for removing water from propane, drying hydrocarbons such as isobutane or benzene, and separating mixtures of n-butane and isobutane. Desorption may be effected by heating or washing. The zeolite may be pelleted with a bonding agent such as clay.
GB27151/58A 1957-08-26 1958-08-25 "improvements in and relating to zeolites" Expired GB841812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US841812XA 1957-08-26 1957-08-26

Publications (1)

Publication Number Publication Date
GB841812A true GB841812A (en) 1960-07-20

Family

ID=22183349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27151/58A Expired GB841812A (en) 1957-08-26 1958-08-25 "improvements in and relating to zeolites"

Country Status (1)

Country Link
GB (1) GB841812A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732584A (en) * 1986-05-22 1988-03-22 Air Products And Chemicals, Inc. Process for the purification of permanent gases using chabazite adsorbents
US4943304A (en) * 1989-04-06 1990-07-24 Air Products And Chemicals, Inc. Process for the purification of bulk gases using chabazite adsorbents
US5026532A (en) * 1989-04-06 1991-06-25 Air Products And Chemicals, Inc. Process for the preparation of an improved chabazite for the purification of bulk gases
US6174941B1 (en) 1998-06-26 2001-01-16 Witco Vinyl Additives Gmbh NH2-modified 6-aminouracils as stabilizers for halogenated polymers
US6211270B1 (en) 1998-06-02 2001-04-03 Witco Vinyl Additives Gmbh Cyanoacetylureas for stabilizing halogenated polymers
US6274654B1 (en) 1998-06-26 2001-08-14 Witco Vinyl Additives Gmbh 1,3-Disubstituted 6-aminouracils for stabilizing halogenated polymers
WO2012003954A2 (en) 2010-07-09 2012-01-12 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V. New phosphate- and silicate-based electrode materials, more particularly for lithium ion batteries and lithium capacitors

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732584A (en) * 1986-05-22 1988-03-22 Air Products And Chemicals, Inc. Process for the purification of permanent gases using chabazite adsorbents
US4943304A (en) * 1989-04-06 1990-07-24 Air Products And Chemicals, Inc. Process for the purification of bulk gases using chabazite adsorbents
US5026532A (en) * 1989-04-06 1991-06-25 Air Products And Chemicals, Inc. Process for the preparation of an improved chabazite for the purification of bulk gases
US6211270B1 (en) 1998-06-02 2001-04-03 Witco Vinyl Additives Gmbh Cyanoacetylureas for stabilizing halogenated polymers
US6174941B1 (en) 1998-06-26 2001-01-16 Witco Vinyl Additives Gmbh NH2-modified 6-aminouracils as stabilizers for halogenated polymers
US6274654B1 (en) 1998-06-26 2001-08-14 Witco Vinyl Additives Gmbh 1,3-Disubstituted 6-aminouracils for stabilizing halogenated polymers
WO2012003954A2 (en) 2010-07-09 2012-01-12 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V. New phosphate- and silicate-based electrode materials, more particularly for lithium ion batteries and lithium capacitors
DE102010026613A1 (en) 2010-07-09 2012-01-12 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. New phosphate- and silicate-based electrode materials, in particular for lithium-ion batteries and lithium capacitors
US9196902B2 (en) 2010-07-09 2015-11-24 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E. V. Phosphate- and silicate-based electrode materials, more particularly for lithium ion batteries and lithium capacitors

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