Process for the separation of ethylbenzene by selective adsorption on a zeolitic adsorbent
AssigneeUniversal Oil Products Company
InventorsRichard W. Neuzil, Donald H. Rosback
Life of this patent
Estimating the term…
Abstract
An adsorptive separation process for separating ethylbenzene from a feed mixture comprising ethylbenzene and at least one xylene isomer, which process comprises contacting the feed mixture with a crystalline aluminosilicate adsorbent comprising type X structured zeolite containing at the exchangeable cationic sites at least one cation selected from the group consisting of cations of elements of Group I-A of the Periodic Table of Elements to effect the selective adsorption of ethylbenzene. The ethylbenzene adsorbed by the adsorbent is thereafter recovered as a purified product. The process can be either in the liquid or vapor phase.
Claims24
A process for separating ethylbenzene from a feed mixture containing ethylbenzene and at least one xylene isomer which comprises contacting said mixture with an adsorbent comprising X structured zeolite containing at exchangeable cationic sites cations consisting of at least one element of Group I-A of the Periodic Table of Elements and which contains from about 0.02 to 2.5 wt. % H.sub.2 O measured by loss on ignition at 500.degree. C., said contacting being at ethylbenzene adsorption conditions including a temperature from about 70.degree. to about 450.degree. F. and at a pressure of from about atmospheric to about 500 psig., and removing adsorbed ethylbenzene from the adsorbent.
Dependencies are inferred from the claim text.