US PATENT SUBCLASS 423 / 714
.~.~ Acid treatment

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

700  DF  ZEOLITE {7}
713  DF  .~ Isomorphic metal substitution {1}
714.~.~ Acid treatment {1}
715  DF  .~.~.~> Halogen containing acid

DEFINITION

Classification: 423/714

Acid treatment:

(under subclass 713) Processes wherein zeolite structural analogues are formed by treatment with acid.