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. 22, 2020
Filed:
Aug. 03, 2018
The Regents of the University of California, Oakland, CA (US);
Exxonmobil Research and Engineering Company, Annandale, NJ (US);
Jeffrey R. Long, Oakland, CA (US);
Simon Christopher Weston, Annandale, NJ (US);
Phillip J. Milner, Albany, CA (US);
Rebecca L. Siegelman, Berkeley, CA (US);
The Regents of the University of California, Oakland, CA (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Achieving the selective and reversible adsorption of COfrom humid, low partial pressures streams such as the flue gas resulting from the combustion of natural gas in combined cycle power plants (4% CO) is challenging due to the need for high thermal, oxidative, and hydrolytic stability as well as moderate regeneration conditions to reduce the energy of adsorption/desorption cycling. Appending cyclic primary, secondary diamines, exemplified by 2-(aminomethyl)piperidine (2-ampd), to the metal-organic frameworks Mg(dobpdc) (dobpdc=4,4-dioxidobiphenyl-3,3-dicarboxylate), Mg(dotpdc) (dotpdc=4,4″-dioxido-[1,1':4′,1″-terphenyl]-3,3″-dicarboxylate) or Mg(pc-dobpdc) (pc-dobpdc=dioxidobiphenyl-4,4′-dicarboxylate) produces adsorbents of the classes EMM-44, EMM-45, and EMM-46, respectively, that display step-shaped adsorption of COat the partial pressures required for 90% capture from natural gas flue gas at temperatures up to or exceeding 60° C. Using a cyclic diamine in place of a diamine functionalized with bulky alkyl groups enables fast adsorption/desorption kinetics with sharp COadsorption and desorption steps.