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Title: Metal beta-diketonate chelates as emissions-reducing fuel additives and a lanthanide-containing polymeric selective sorbent

Abstract

Metal chelates of the anion of H(tod), 2,2,7-trimethyl-3,5-octanedione, have been synthesized and studied for use as emissions-reducing fuel additives. The thermal stability and volatility of complexes containing Co(III), Ni(II), Mn(II) and Ce(IV) were examined. These metal complexes exhibit very high solubilities in solvents such as n-hexane and are unusually volatile and thermally stable compounds. The structure of Cu(tod)/sub 2/ was determined by x-ray crystallography. Tests using Mn(tod)/sub 3/, Cu(tod)/sub 2/ and Ce(tod)/sub 4/ as fuel additives for gasoline engines indicated that dissolution of Mn(tod)/sub 3/ in test fuels can lower carbon monoxide levels in exhaust gas. The total hydrocarbon concentration and the relative concentrations of twenty hydrocarbon compounds in the exhaust were unaffected by the addition of these fuel additives to test fuel. A new porous polymer sorbent material has been developed which exhibits large breakthrough volumes for nucleophilic compounds. A styrene-divinylbenzene copolymer was modified such that fluorinated beta-diketone moieties were bonded to the phenyl rings in the polymer. Europium(III) ions were then incorporated in the modified polmer by complexation with the bound ligands. This study showed that the Eu(III)-containing polymer can retain nucleophilic species, such as aldehydes and ketones, when used as a trapping sorbent in air analysis. Apparentlymore » the retention of these compounds occurs via complexation with immobilized Eu(III) ions. The retention is thermally reversible, which allows sorbed compounds to be desorbed for gas chromatographic analysis.« less

Authors:
Publication Date:
Research Org.:
Colorado Univ., Boulder (USA)
OSTI Identifier:
5811886
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AIR POLLUTION; REDUCTION; ALDEHYDES; ADSORPTION; CERIUM COMPLEXES; STRUCTURAL CHEMICAL ANALYSIS; SYNTHESIS; COBALT COMPLEXES; COPOLYMERS; SORPTIVE PROPERTIES; DIVINYLBENZENE; EUROPIUM COMPLEXES; KETONES; MANGANESE COMPLEXES; NICKEL COMPLEXES; STYRENE; FUEL ADDITIVES; INTERNAL COMBUSTION ENGINES; ADDITIVES; ALKYLATED AROMATICS; AROMATICS; CHEMICAL REACTIONS; COMPLEXES; ENGINES; HEAT ENGINES; HYDROCARBONS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; POLLUTION; POLYMERS; RARE EARTH COMPLEXES; SORPTION; SURFACE PROPERTIES; TRANSITION ELEMENT COMPLEXES; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989); 400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987); 400201 - Chemical & Physicochemical Properties

Citation Formats

Williams, E J. Metal beta-diketonate chelates as emissions-reducing fuel additives and a lanthanide-containing polymeric selective sorbent. United States: N. p., 1985. Web.
Williams, E J. Metal beta-diketonate chelates as emissions-reducing fuel additives and a lanthanide-containing polymeric selective sorbent. United States.
Williams, E J. Tue . "Metal beta-diketonate chelates as emissions-reducing fuel additives and a lanthanide-containing polymeric selective sorbent". United States.
@article{osti_5811886,
title = {Metal beta-diketonate chelates as emissions-reducing fuel additives and a lanthanide-containing polymeric selective sorbent},
author = {Williams, E J},
abstractNote = {Metal chelates of the anion of H(tod), 2,2,7-trimethyl-3,5-octanedione, have been synthesized and studied for use as emissions-reducing fuel additives. The thermal stability and volatility of complexes containing Co(III), Ni(II), Mn(II) and Ce(IV) were examined. These metal complexes exhibit very high solubilities in solvents such as n-hexane and are unusually volatile and thermally stable compounds. The structure of Cu(tod)/sub 2/ was determined by x-ray crystallography. Tests using Mn(tod)/sub 3/, Cu(tod)/sub 2/ and Ce(tod)/sub 4/ as fuel additives for gasoline engines indicated that dissolution of Mn(tod)/sub 3/ in test fuels can lower carbon monoxide levels in exhaust gas. The total hydrocarbon concentration and the relative concentrations of twenty hydrocarbon compounds in the exhaust were unaffected by the addition of these fuel additives to test fuel. A new porous polymer sorbent material has been developed which exhibits large breakthrough volumes for nucleophilic compounds. A styrene-divinylbenzene copolymer was modified such that fluorinated beta-diketone moieties were bonded to the phenyl rings in the polymer. Europium(III) ions were then incorporated in the modified polmer by complexation with the bound ligands. This study showed that the Eu(III)-containing polymer can retain nucleophilic species, such as aldehydes and ketones, when used as a trapping sorbent in air analysis. Apparently the retention of these compounds occurs via complexation with immobilized Eu(III) ions. The retention is thermally reversible, which allows sorbed compounds to be desorbed for gas chromatographic analysis.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

Thesis/Dissertation:
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