Composite adsorbent for removing acids from organophosphate functional fluids
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United States of America Patent
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Jun 14, 1988
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N/A
app pub date -
Aug 7, 1986
filing date -
Aug 7, 1986
priority date (Note) -
Expired
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Abstract
A composite adsorbent useful for reducing the acidity and moisture content of used organophosphate functional fluids. The adsorbent is a powder having an average particle size of about 20-500 microns and total pore volume of at least about 0.40 cm.sup.3 /g and it comprises about 40-90 wt % alumina and about 10-60 wt % Y zeolite wherein the molar ratio of SiO.sub.2 to Al.sub.2 O.sub.3 is about 4.5-6.0. The adsorbent is preferably produced by agglomerating particles of activated alumina and Y zeolite into a composite agglomerate, aging the agglomerate and then comminuting to form a powder.
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