Chemistry of hydrocarbon compounds – Saturated compound synthesis – By isomerization
Patent
1997-02-03
1998-06-23
Caldarola, Glenn
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By isomerization
585702, 585735, 585738, 585737, 585739, 585744, 585748, 585750, 585751, C07C 513
Patent
active
057707839
ABSTRACT:
A process to isomerize at least one normal or mono-methyl-branched alkane containing from about 6 to about 8 carbon atoms to form at least one multi-methyl-branched alkane has been developed. The normal or mono-methyl-branched alkane is introduced to a reaction and adsorption zone operating under conditions effective to isomerize the normal or mono-methyl-branched alkane and containing a catalyst effective to isomerize the normal or mono-methyl-branched alkane and an adsorbent effective to selectively adsorb normal and mono-methyl-branched alkanes relative to multi-methyl-branched alkanes. Hydrogen and a desorbent comprising at least one alkane having from about 4 to about 8 carbon atoms is introduced to a first portion of the reaction and adsorption zone and an effluent containing at least one multi-methyl-branched alkane is withdrawn from a second portion of the reaction and adsorption zone. After a period of time, the desorbent is redirected to the second portion of the reaction and adsorption zone and concurrently the effluent containing at least one multi-methyl-branched alkane is withdrawn from the first portion of the reaction and adsorption zone. The alternation of introducing the desorbent to a first portion and then a second portion of the reaction and adsorption zone while concurrently withdrawing the effluent from the second portion and then the first portion of the reaction and adsorption zone is continued.
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McGonegal Charles P.
Zinnen Herman A.
Caldarola Glenn
Dang Thuan D.
Maas Maryann
McBride Thomas K.
Snyder Eugene I.
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