Zeolitized composite bodies and manufacture thereof
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United States of America Patent
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-
Nov 25, 1980
Grant Date -
N/A
app pub date -
Mar 16, 1979
filing date -
Mar 16, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved process for the production of mechanically strong shaped crystalline zeolitic aluminosilicate bodies from precursor bodies composed of kaolin clay calcined at elevated temperature, the crystallized bodies having essentially the same size and shape as the precursor bodies. Conversion of the calcined clay contained in the precursor bodies to a mixture of crystalline zeolitic alluminosilicate component and a porous amorphous silica-alumina component takes place as a result of reaction between the calcined clay and an aqueous alkaline liquid in which the bodies are immersed. The improved process features the presence of a solution of aluminosilicate nucleation centers during such reaction.
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