The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 2010
Filed:
Jun. 30, 2008
James W. Priegnitz, Boulder Junction, WI (US);
Darryl M. Johnson, Sr., Broadview, IL (US);
Linda Shi Cheng, Highland Park, IL (US);
Scott E. Commissaris, Fox River Grove, IL (US);
Jack E. Hurst, Mobile, AL (US);
Michael H. Quick, Arlington Heights, IL (US);
Santi Kulprathipanja, Inverness, IL (US);
James W. Priegnitz, Boulder Junction, WI (US);
Darryl M. Johnson, Sr., Broadview, IL (US);
Linda Shi Cheng, Highland Park, IL (US);
Scott E. Commissaris, Fox River Grove, IL (US);
Jack E. Hurst, Mobile, AL (US);
Michael H. Quick, Arlington Heights, IL (US);
Santi Kulprathipanja, Inverness, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
Adsorbents and methods for the adsorptive separation of para-xylene from a mixture containing at least one other Caromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable binderless adsorbents (e.g., formulated with the substantial absence of an amorphous material that normally reduces selective pore volume), particularly those with a water content from about 3% to about 5.5% by weight, improve capacity and/or mass transfer. These properties are especially advantageous for improving productivity in low temperature, low cycle time adsorptive separation operations in a simulated moving bed mode.