Search results for "oxygen carrier"

showing 3 items of 3 documents

FLUORINATED DERIVATIVES OF A POLYASPARTAMIDE BEARING POLYETHYLENE GLYCOL CHAINS AS OXYGEN CARRIERS

2008

Abstract In this paper the synthesis and characterization of new fluorinated polymers based on a polyaspartamide bearing polyethylene glycol (PEG) chains, are reported. The starting material was the α,β-poly(N-2-hydroxyethyl)- dl -aspartamide (PHEA), a water soluble and biocompatible polymer, that has been derivatized with both polyethylene glycol (with a molecular weight of 2000 Da) and 5-pentafluorophenyl-3-perfluoroheptyl-1,2,4-oxadiazole. By varying the amount of the fluorinated oxadiazole, three samples have been prepared and characterized by FT-IR, 1H NMR, 19F NMR and UV–VIS spectroscopy. Size exclusion chromatography analysis of these copolymers revealed the occurrence of a self-asso…

Aqueous solutionBiocompatibilityChemistryOrganic ChemistrySize-exclusion chromatographyOxadiazoleFluorine-19 NMRPolyethylene glycolHaemolysisBiochemistryInorganic Chemistrychemistry.chemical_compoundDynamic light scatteringARTIFICIAL OXYGEN CARRIER POLYASPARTAMIDE FLUORINATED POLYMERIC MICELLESSettore CHIM/09 - Farmaceutico Tecnologico ApplicativoPolymer chemistryEnvironmental ChemistryPhysical and Theoretical Chemistry
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Cascade complex formation by phosphate in the cobalt(II)/[30]aneN10 anaerobic system

1993

Abstract The interaction of phosphate with the mono- and binuclear cobalt(II) complexes of [30]aneN 10 (1,4,7,10,13,16,19,22,25,28-decaazacyclotriacontane) has been studied by potentiometry in 0.15 mol dm −3 NaClO 4 solution at 298.15 K under anaerobic conditions. The stable species [CoH 2 ([30]aneN 10 )PO 4 ] + , [CoH 4 ([30]aneN 10 )PO 4 ] 3+ , [Co 2 H([30]aneN 10 )PO 4 ] 2+ , [Co 2 H 2 ([30]aneN 10 )PO 4 ] 3+ and [Co 2 H 3 ([30]aneN 10 )PO 4 ] 4+ , where the phosphate anion is directly bound to the metal ions or acts as a second sphere ligand, are formed and their stability constants have been determined. The results obtained allowed for the selection of suitable conditions for the study…

DIOXYGEN CARRIERS; DIOXYGEN BINDING; Co(II) COMPLEXES; POLYAMINE LIGANDS; DITOPIC POLYAMINES; OPEN-CHAIN POLYAZAALKANES; THERMODYNAMICS; ANION COORDINATION CHEMISTRY; INCLUSION COMPLEXESINCLUSION COMPLEXESMetal ions in aqueous solutionComplex formationInorganic chemistryDIOXYGEN BINDINGchemistry.chemical_elementMedicinal chemistryCo(II) COMPLEXESInorganic Chemistrychemistry.chemical_compoundOPEN-CHAIN POLYAZAALKANESANION COORDINATION CHEMISTRYTHERMODYNAMICSMaterials ChemistryDIOXYGEN CARRIERSPhysical and Theoretical ChemistryLigandPhosphatePhosphate anionchemistryDITOPIC POLYAMINESChemical equilibriumAnaerobic exerciseCobaltPOLYAMINE LIGANDS
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Use of nanostructures as oxygen carriers in chemical looping combustion

2013

The usage of fossils fuels has increased carbon dioxide emissions, and the carbon dioxide is responsible for global warming and sea level rising. One of the most promising ways of carbon capturing from the power plants is chemical looping combustion (CLC). CLC is based on the alternating oxidation and reduction reactions on the air and fuel reactors. Oxygen and energy needed for combustion between the reactors is transferred by an oxygen carrier. Oxygen carrier is usually made of metal or metal oxide. One big hindrance towards commercial use of CLC is slow reaction kinetics of oxygen carriers. One possible solution for the problem is to replace the conventional carriers by nanoscale oxygen …

hiilidioksidihappinanorakenteetCLCoxygen carriernanohiilidioksidin talteenotto ja varastointi
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