KRISTALLINES ZEOLITHPULVER DES TYPS A III

There are produced crystalline zeolite powders of Type A with the composition 1.0+/-0.2M2/nO:Al2O3:1.85+/-0.5SiO2.yH2O where M is a metal cation, n is it valence and y has a value up to 6 with 50 weight % of the particles not over 4.3 mu and with a particle spectrum: -Fraction ( mu ) Portion (weight...

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Bibliographic Details
Main Authors STRACK,HANS,.DR, ROEBKE,WOLFGANG,.DR, KNEITEL,DIETER
Format Patent
LanguageGerman
Published 18.05.1978
Edition2
Subjects
ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
ARTIFICIAL STONE
CANDLES
CEMENTS
CERAMICS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
DETERGENT COMPOSITIONS
DETERGENTS
FATTY ACIDS THEREFROM
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
RECOVERY OF GLYCEROL
REFRACTORIES
RESIN SOAPS
SLAG
SOAP OR SOAP-MAKING
THEIR RELEVANT APPARATUS
TRANSPORTING
TREATMENT OF NATURAL STONE
USE OF SINGLE SUBSTANCES AS DETERGENTS
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Summary:There are produced crystalline zeolite powders of Type A with the composition 1.0+/-0.2M2/nO:Al2O3:1.85+/-0.5SiO2.yH2O where M is a metal cation, n is it valence and y has a value up to 6 with 50 weight % of the particles not over 4.3 mu and with a particle spectrum: -Fraction ( mu ) Portion (weight %) -<3 18 to 38 -<5 70 to 82 -<10 93 to 99 -<15 96 to 100 - by hydrothermally crystallizing a SiO2, Al2O3, Na2O and water containing alkali aluminate, water, silicate synthesis mixture with an optional tempering step wherein in a given case during the crystallization or tempering step instead of stirring shearing forces are employed. The process comprises providing an aqueous alkali aluminate liquor having a temperature of 30 DEG to 100 DEG C. and containing 0.1 to 100 grams of Al2O3/l and 1 to 200 grams of Na2O/l, feeding in an alkali silicate solution within 10 to 200 minutes to obtain a clear reaction solution having the composition SiO2/Al2O3=50 to 1000:1, Na2O/SiO2=0.2 to 20:1 and H2O/Na2O=4 to 300:1, adding with stirring to the synthesis mixture an aqueous sodium aluminate which contains 10 to 200 grams/l of Al2O3 and 10 to 250 grams/l of Na2O having a temperature of 30 DEG to 100 DEG C. and allowing the thus obtained synthesis mixture to crystallize at a temperature within between 20 DEG and 175 DEG C. in at least 15 minutes.
Bibliography:Application Number: DE19762651436