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:
Sep. 24, 2013
Filed:
Nov. 26, 2008
Moinuddin Ahmed, Hercules, CA (US);
Huping Luo, Richmond, CA (US);
Krishniah Parimi, Alamo, CA (US);
Bong-kyu Chang, Novato, CA (US);
Sara Lindsay, Houston, TX (US);
Moinuddin Ahmed, Hercules, CA (US);
Huping Luo, Richmond, CA (US);
Krishniah Parimi, Alamo, CA (US);
Bong-Kyu Chang, Novato, CA (US);
Sara Lindsay, Houston, TX (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
Disclosed herein are processes in which precipitation permits removal of metal halides (e.g. AlCl) from ionic liquids. After precipitation, the precipitated metal halides can be physically separated from the bulk ionic liquid. More effective precipitation can be achieved through cooling or the combination of cooling and the provision of metal halide seed crystals. The ionic liquids can be regenerated ionic liquid catalysts, which contain excess metal halides after regeneration. Upon removal of the excess metal halides, they can be reused in processes using ionic liquid catalysts, such as alkylation processes.