Method for removing acids from organophosphate functional fluids

Details Method for removing acids from organophosphate functional fluids Method for removing acids from organophosphate functional fluids

1987-12-28

1989-02-28

Sutto, Anton H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

C07F 909

Patent

active

048087424

ABSTRACT:
A method for reducing the acidity and moisture content of used organophosphate functional fluids. The used functional fluid is contacted with a solid composite adsorbent and then separated from the adsorbent. The composite adsorbent is preferably 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 produced by agglomerating particles of activated alumina and Y zeolite into a composite agglomerate, aging the agglomerate, activating at an elevated temperature, and then comminuting to form a powder.

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