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Photocatalytic degradation of methyl tert-butyl ether in the gas-phase: A kinetic study

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dc.contributor.author Boulamanti, AK en
dc.contributor.author Philippopoulos, CJ en
dc.date.accessioned 2014-03-01T01:29:00Z
dc.date.available 2014-03-01T01:29:00Z
dc.date.issued 2008 en
dc.identifier.issn 0304-3894 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/19072
dc.subject Acetone en
dc.subject Langmuir-Hinshelwood kinetics en
dc.subject tert-Butyl formate en
dc.subject Titanium dioxide en
dc.subject.classification Engineering, Environmental en
dc.subject.classification Engineering, Civil en
dc.subject.classification Environmental Sciences en
dc.subject.other Acetone en
dc.subject.other Adsorption en
dc.subject.other Atmospheric humidity en
dc.subject.other Automotive fuels en
dc.subject.other Concentration (process) en
dc.subject.other Ethers en
dc.subject.other Fuel additives en
dc.subject.other Kinetic theory en
dc.subject.other Meteorology en
dc.subject.other Moisture en
dc.subject.other Organic compounds en
dc.subject.other Oxides en
dc.subject.other Oxygen en
dc.subject.other Photocatalysis en
dc.subject.other Photodegradation en
dc.subject.other Reaction kinetics en
dc.subject.other Titanium en
dc.subject.other Titanium dioxide en
dc.subject.other Volatile organic compounds en
dc.subject.other Adsorption constants en
dc.subject.other Ambient temperatures en
dc.subject.other Butyl ethers en
dc.subject.other Butyl formates en
dc.subject.other Final products en
dc.subject.other Initial concentrations en
dc.subject.other Kinetic studies en
dc.subject.other Kinetics equations en
dc.subject.other Langmuir en
dc.subject.other Langmuir-Hinshelwood kinetics en
dc.subject.other Optimum values en
dc.subject.other Oxygen concentrations en
dc.subject.other Photocatalytic degradations en
dc.subject.other Photocatalytic oxidations en
dc.subject.other Photochemical oxidants en
dc.subject.other Plug flow reactors en
dc.subject.other Positive effects en
dc.subject.other Reaction schemes en
dc.subject.other Relative humidities en
dc.subject.other tert-Butyl formate en
dc.subject.other Rate constants en
dc.subject.other acetone en
dc.subject.other carbon dioxide en
dc.subject.other tert butyl methyl ether en
dc.subject.other titanium dioxide en
dc.subject.other catalysis en
dc.subject.other concentration (composition) en
dc.subject.other kinetics en
dc.subject.other MTBE en
dc.subject.other photodegradation en
dc.subject.other photooxidation en
dc.subject.other titanium en
dc.subject.other volatile organic compound en
dc.subject.other article en
dc.subject.other degradation en
dc.subject.other environmental temperature en
dc.subject.other gas analysis en
dc.subject.other oxygen concentration en
dc.subject.other photocatalysis en
dc.subject.other photochemical smog en
dc.subject.other toxicokinetics en
dc.subject.other water vapor en
dc.subject.other Air Pollutants, Occupational en
dc.subject.other Catalysis en
dc.subject.other Humidity en
dc.subject.other Kinetics en
dc.subject.other Methyl Ethers en
dc.subject.other Oxidation-Reduction en
dc.subject.other Oxygen en
dc.subject.other Photochemistry en
dc.subject.other Water en
dc.title Photocatalytic degradation of methyl tert-butyl ether in the gas-phase: A kinetic study en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.jhazmat.2008.02.087 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.jhazmat.2008.02.087 en
heal.language English en
heal.publicationDate 2008 en
heal.abstract Methyl tert-butyl ether (MTBE) is the basic oxygenated motor fuel additive in Europe and is included in volatile organic compounds (VOCs), which can produce photochemical oxidants. In the present study the gas-phase photocatalytic oxidation (PCO) of MTBE over illuminated titanium dioxide was carried out at ambient temperature in a plug flow reactor. The intermediates detected are mainly tert-butyl formate and acetone, while the final products are CO2 and water. The system was sensitive to the oxygen concentration, for concentrations up to 15% (v/v). Moisture had a positive effect on the reaction, obtaining an optimum value near 45% relative humidity for 200 ppmv MTBE initial concentration. A reaction scheme has been proposed for the interpretation of the experimental results and a kinetic study was conducted, using the Langmuir-Hinshelwood kinetics equation. The MTBE rate constant was 1.545 x 10(-6) M s(-1) g(cat)(-1) for the reaction without moisture and 2.46 x 10(-6) M s(-1) g(cat)(-1) for the reaction in the presence of moisture and the adsorption constant was 2.187 x 10(5) M-1 independent of humidity. (c) 2008 Elsevier B.V. All rights reserved. en
heal.publisher ELSEVIER SCIENCE BV en
heal.journalName Journal of Hazardous Materials en
dc.identifier.doi 10.1016/j.jhazmat.2008.02.087 en
dc.identifier.isi ISI:000261255100013 en
dc.identifier.volume 160 en
dc.identifier.issue 1 en
dc.identifier.spage 83 en
dc.identifier.epage 87 en


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