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Title: Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report

Abstract

The objective of this research program is to elucidate the chemical principles which are responsible for the cation selectivity and permeability of liquid membranes containing macrocyclic carriers. Several new macrocyclic carriers were synthesized during the last three year period. In addition, new, more convenient synthetic routes were achieved for several nitrogen-containing bicyclic and tricyclic macrocycles. The cation binding properties of these macrocycles were investigated by potentiometric titration, calorimetric titration, solvent extraction and NMR techniques. In addition, hydrophobic macrocycles were incorporated into dual hollow fiber and other membrane systems to investigate their membrane performance, especially in the proton-coupled transport mode. A study of the effect of methoxyalkyl macrocycle substituents on metal ion transport was completed. A new calorimeter was constructed which made it possible to study the thermodynamics of macrocycle-cation binding to very high temperatures. Measurements of thermodynamic data for the interaction of crown ethers with alkali and alkaline earth cations were achieved to 473 K. Molecular modeling work was begun for the first time on this project and fundamental principles were identified and developed for the establishment of working models in the future.

Authors:
; ; ;
Publication Date:
Research Org.:
Brigham Young Univ., Provo, UT (United States)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (United States)
OSTI Identifier:
418398
Report Number(s):
DOE/ER/13463-T3
ON: DE97001768; TRN: AHC29702%%7
DOE Contract Number:
FG02-86ER13463
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 24 Aug 1996
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; SUPPORTED LIQUID MEMBRANES; CHEMICAL PROPERTIES; PERMEABILITY; PROGRESS REPORT; MEMBRANE TRANSPORT; ALKALINE EARTH METALS; ALKALI METALS; MOLECULAR MODELS; LIGANDS; SYNTHESIS

Citation Formats

Lamb, J.D., Izatt, R.M., Bradshaw, J.S., and Shirts, R.B. Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report. United States: N. p., 1996. Web. doi:10.2172/418398.
Lamb, J.D., Izatt, R.M., Bradshaw, J.S., & Shirts, R.B. Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report. United States. doi:10.2172/418398.
Lamb, J.D., Izatt, R.M., Bradshaw, J.S., and Shirts, R.B. Sat . "Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report". United States. doi:10.2172/418398. https://www.osti.gov/servlets/purl/418398.
@article{osti_418398,
title = {Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report},
author = {Lamb, J.D. and Izatt, R.M. and Bradshaw, J.S. and Shirts, R.B.},
abstractNote = {The objective of this research program is to elucidate the chemical principles which are responsible for the cation selectivity and permeability of liquid membranes containing macrocyclic carriers. Several new macrocyclic carriers were synthesized during the last three year period. In addition, new, more convenient synthetic routes were achieved for several nitrogen-containing bicyclic and tricyclic macrocycles. The cation binding properties of these macrocycles were investigated by potentiometric titration, calorimetric titration, solvent extraction and NMR techniques. In addition, hydrophobic macrocycles were incorporated into dual hollow fiber and other membrane systems to investigate their membrane performance, especially in the proton-coupled transport mode. A study of the effect of methoxyalkyl macrocycle substituents on metal ion transport was completed. A new calorimeter was constructed which made it possible to study the thermodynamics of macrocycle-cation binding to very high temperatures. Measurements of thermodynamic data for the interaction of crown ethers with alkali and alkaline earth cations were achieved to 473 K. Molecular modeling work was begun for the first time on this project and fundamental principles were identified and developed for the establishment of working models in the future.},
doi = {10.2172/418398},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Aug 24 00:00:00 EDT 1996},
month = {Sat Aug 24 00:00:00 EDT 1996}
}

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