Selective M/sup +/-H/sup +/ coupled transport of cations through a liquid membrane by macrocyclic calixarene ligands

Journal Article · Wed Apr 06 04:00:00 EST 1983 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00345a016· OSTI ID:5684941

Izatt, R M; Lamb, J D; Hawkins, R T; Brown, P R; Izatt, S R; Christensen, J J

Macrocylic p-tert-butylcalix(4)arene, -calix(6)arene, and -calix(8)arene have been studied as cation carriers in H/sub 2/O-(organic solvent)-H/sub 2/O liquid membranes. When the source water phase is a solution of the metal nitrate salt, no cation transport through the membrane CCHCl/sub 3/) is observed with these ligands in contrast to measurable transport when the macrocyclic carrier, 18-crown-6, is present. However, if the source phase is a solution of the metal hydroxide, transport of cations is observed with calixarenes but not with 18-crown-6 in the membrane (25% v/v CH/sub 2/Cl/sub 2/-CCl/sub 4/). Transport by the calixarenes is selective for Cs/sup +/ over other alkali metal cations with the selectivity increasing in the order (8) < (6) < (4). Preliminary work with p-tert-pentylcalix(4)arene and -calix(8)arene shows transport behavior to be similar to that of the corresponding p-tert-butylcalixarenes. These calixarene ligands offer several features desirable to membrane carriers: (1) low water solubility, (2) formation of neutral complexes with cations through loss of a proton, and (3) the potential for coupling cation transport to the reverse flux of protons.

• Research Organization: Brigham Young Univ., Provo, UT
• DOE Contract Number: AC02-78ER05016
• OSTI ID: 5684941
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 105:7; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKALI METALS
BARYONS
CATIONS
CESIUM
CHARGED PARTICLES
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRONS
HYDROGEN COMPOUNDS
HYDROXIDES
IONS
LIGANDS
MEMBRANE TRANSPORT
MEMBRANES
METALS
NITRATES
NITROGEN COMPOUNDS
NUCLEONS
OXYGEN COMPOUNDS
PROTONS