VERFAHREN ZUR HERSTELLUNG VON ZEOLITH Y

1437869 Zeolite Y UNION CARBIDE CORP 7 May 1974 [8 May 1973] 19983/74 Heading C1A Zeolite Y is prepared by (a) providing in a sealable reaction vessel a homogeneous aqueous aluminosilicate reaction mixture in which the source of silica is solid reactive amorphous silica, the reaction mixture having...

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Bibliographic Details
Main Author WEBER, WILLIS WILMER, SOUTH SALEM, N.Y. (V.ST.A.)
Format Patent
LanguageGerman
Published 19.12.1974
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:1437869 Zeolite Y UNION CARBIDE CORP 7 May 1974 [8 May 1973] 19983/74 Heading C1A Zeolite Y is prepared by (a) providing in a sealable reaction vessel a homogeneous aqueous aluminosilicate reaction mixture in which the source of silica is solid reactive amorphous silica, the reaction mixture having the following composition Na 2 O/SiO 2 0À30-0À36, SiO 2 /Al 2 O 3 8À0-11, H 2 O/Na 2 O 16-35 (oxide-mole ratios), (b) maintaining the reaction mixture at 95- 160‹ F. for 6-15 hours (optionally with agitation), (c) injecting steam into the reaction mixture to raise the temperature to 240-300‹ F. while not increasing the water content by not more than 15% by weight, (d) maintaining the reaction mixture under autogenous pressure for 4-20 hours at 240-300‹ F. and (e) rapidly decreasing the pressure from autogenous to atmospheric to obtain a temperature decrease of at least 35‹ F. in a period not exceeding 10 minutes. The process may include an additional step of filtering and washing the reaction mass solid to recover Zoelite Y crystals.
Bibliography:Application Number: DE19742421884