Polymers with ligands bound thereto for metal extractions in liquid carbon dioxide
Номер патента: EP1129226A1
Опубликовано: 05-09-2001
Автор(ы): Eva R. Birnbaum, James B. McClain, Joseph M. Desimone, Kimberly R. Powell, T. Mark Mccleskey, Timothy J. Romack, William Tumas
Принадлежит: North Carolina State University, UNIVERSITY OF CALIFORNIA
Опубликовано: 05-09-2001
Автор(ы): Eva R. Birnbaum, James B. McClain, Joseph M. Desimone, Kimberly R. Powell, T. Mark Mccleskey, Timothy J. Romack, William Tumas
Принадлежит: North Carolina State University, UNIVERSITY OF CALIFORNIA
Реферат: A composition useful for the extraction of metals and metalloids comprises: (a) carbon dioxide fluid (preferably liquid or supercritical carbon dioxide); and (b) a polymer in the carbon dioxide, the polymer having bound thereto a ligand that binds the metal or metalloid; with the ligand bound to the polymer at a plurality of locations along the chain length thereof (i.e., a plurality of ligands are bound at a plurality of locations along the chain length of the polymer). The polymer is preferably a copolymer, and the polymer is preferably a fluoropolymer such as a fluoroacrylate polymer. The extraction method comprises the steps of contacting a first composition containing a metal or metalloid to be extracted with a second composition, the second composition being as described above; and then extracting the metal or metalloid from the first composition into the second composition.
Method for preparing a slurry of pulverized solid material in liquid or supercritical carbon dioxide
Номер патента: US20150209750A1. Автор: Cristina Botero,Ahmed F. Ghoniem,Randall Perkins Field,Howard J. HERZOG. Владелец: Massachusetts Institute of Technology. Дата публикации: 2015-07-30.