Process for separating isomers of dinitrotoluene

Details Process for separating isomers of dinitrotoluene Process for separating isomers of dinitrotoluene

1985-10-01

1987-02-10

Lechert, Jr., Stephen J.

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

Organic compounds

Oxygen containing

210670, 568932, C07C 7910

Patent

active

046423974

ABSTRACT:
This invention comprises a process for separating 2,4-dinitrotoluene from a feed mixture comprising 2,4-dinitrotoluene and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising an X or Y type zeolite cation exchanged with a cation in the group K, Na, Ca, Ba, Li or Mg, thereby selectively adsorbing the 2,4-dinitrotoluene. The remainder of the feed mixture is removed from the adsorbent and the 2,4-dinitrotoluene is recovered by desorption at desorption conditions with a desorbent material comprising a C.sub.3 to C.sub.5 alcohol, a ketone, toluene, an ester or a nitrocompound.

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