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Photocatalytic degradation of methyl tert-butyl ether in the gas-phase: a kinetic study.
J Hazard Mater. 2008 Dec 15; 160(1):83-7.JH

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 CO(2) 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 200ppmv 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)Ms(-1)g(cat)(-1) for the reaction without moisture and 2.46 x 10(-6)Ms(-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.

Authors+Show Affiliations

Chemical Process Engineering Laboratory, Department of Chemical Engineering, National Technical University of Athens, Athens, Greece.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18395338

Citation

Boulamanti, Aikaterini K., and Constantine J. Philippopoulos. "Photocatalytic Degradation of Methyl Tert-butyl Ether in the Gas-phase: a Kinetic Study." Journal of Hazardous Materials, vol. 160, no. 1, 2008, pp. 83-7.
Boulamanti AK, Philippopoulos CJ. Photocatalytic degradation of methyl tert-butyl ether in the gas-phase: a kinetic study. J Hazard Mater. 2008;160(1):83-7.
Boulamanti, A. K., & Philippopoulos, C. J. (2008). Photocatalytic degradation of methyl tert-butyl ether in the gas-phase: a kinetic study. Journal of Hazardous Materials, 160(1), 83-7. https://doi.org/10.1016/j.jhazmat.2008.02.087
Boulamanti AK, Philippopoulos CJ. Photocatalytic Degradation of Methyl Tert-butyl Ether in the Gas-phase: a Kinetic Study. J Hazard Mater. 2008 Dec 15;160(1):83-7. PubMed PMID: 18395338.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic degradation of methyl tert-butyl ether in the gas-phase: a kinetic study. AU - Boulamanti,Aikaterini K, AU - Philippopoulos,Constantine J, Y1 - 2008/03/04/ PY - 2007/06/28/received PY - 2008/02/21/revised PY - 2008/02/26/accepted PY - 2008/4/9/pubmed PY - 2009/2/10/medline PY - 2008/4/9/entrez SP - 83 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 160 IS - 1 N2 - 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 CO(2) 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 200ppmv 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)Ms(-1)g(cat)(-1) for the reaction without moisture and 2.46 x 10(-6)Ms(-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. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18395338/Photocatalytic_degradation_of_methyl_tert_butyl_ether_in_the_gas_phase:_a_kinetic_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00315-4 DB - PRIME DP - Unbound Medicine ER -