scholarly journals Photocatalytic oxidation of TCE and MTBE in the Gas phase

2013 ◽  
Vol 10 (2) ◽  
pp. 237-240
Keyword(s):  
Gas Phase ◽  
Photocatalytic Oxidation ◽  
Methyl Tert Butyl Ether ◽  
Inlet Concentration ◽  
Ambient Conditions ◽  
Butyl Ether ◽  
Tert Butyl ◽  
The Impact ◽  
By Products ◽  
Mtbe Decomposition

Photocatalysis is a promising method for eliminating the volatile organic compounds emitted from various industrial processes because mild or ambient conditions are used. Titanium dioxide is commonly used as photocatalyst and ultraviolet light is utilized for decomposing gas phase pollutants. In the present work, the photocatalytic oxidation of methyl tert butyl ether (MTBE) and trichloroethylene (TCE) in the gas phase was studied. The impact of residence time, TCE/MTBE concentration and oxygen concentration on TCE/MTBE conversion and byproduct formation was examined. Acetone and tert-butyl formate were detected at the reactor outlet from MTBE decomposition, whereas dichloroacetyl chloride (DCAC) and phosgene were found as by-products of TCE oxidation. The residence time affected dramatically both TCE and MTBE photo-oxidation as well as by-products existence and configuration. In contrast, the variation of oxygen inlet concentration affected significantly only MTBE conversion. Finally, the increase in MTBE and TCE inlet concentration had as a result decreased conversions observed.

scholarly journals Photocatalytic Oxidation of Methyl Tert-Butyl Ether in Presence of Various Phase Compositions of TiO2

Catalysts ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 35
Author(s):  
Marcel Šihor ◽  
Martin Reli ◽  
Michal Vaštyl ◽  
Květoslava Hrádková ◽  
Lenka Matějová ◽  
...  
Keyword(s):  
Phase Composition ◽  
Photocatalytic Oxidation ◽  
Rutile Phase ◽  
Methyl Tert Butyl Ether ◽  
Butyl Ether ◽  
Tio2 Photocatalysts ◽  
Tert Butyl ◽  
Photogenerated Electrons ◽  
Effective Removal ◽  
By Products

MTBE (methyl tert-butyl ether) represents a rising threat to the environment, especially drinking water, and its effective removal (with all by-products) is necessary. Even a very low concentration of MTBE makes the water undrinkable; therefore, an effective treatment has to be developed. This work is focused on MTBE photocatalytic oxidation in presence of various TiO2 photocatalysts with different phase composition prepared by different methods. It was confirmed the phase composition of TiO2 had the most significant influence on the photocatalytic degradation of MTBE. The rutile phase more easily reduces adsorbed oxygen by photogenerated electrons to superoxide radical, supporting separation of charge carriers. The presence and concentrations of by-products have to be taken into account as well. The conversion of total organic carbon (TOC) was used for the comparison, 40% of TOC was removed after 1 h of irradiation in presence of TiO2–ISOP–C/800 photocatalyst composed of anatase and rutile phase.

Photocatalytic oxidation of gas-phase methyl tert-butyl ether and tert-butyl alcohol

2006 ◽  
Vol 64 (1-2) ◽  
pp. 79-87 ◽  
Author(s):  
Sergei Preis ◽  
John L. Falconer ◽  
Raquel del Prado Asensio ◽  
Nuria Capdet Santiago ◽  
Anna Kachina ◽  
...  
Keyword(s):  
Gas Phase ◽  
Photocatalytic Oxidation ◽  
Butyl Alcohol ◽  
Methyl Tert Butyl Ether ◽  
Butyl Ether ◽  
Tert Butyl ◽  
Tert Butyl Alcohol

ChemInform Abstract: Products of the Gas-Phase Reaction of Methyl tert-Butyl Ether with the OH Radical in the Presence of NOx

ChemInform ◽  
2010 ◽  
Vol 23 (5) ◽  
pp. no-no
Author(s):  
E. C. TUAZON ◽  
W. P. L. CARTER ◽  
S. M. ASCHMANN ◽  
R. ATKINSON
Keyword(s):  
Gas Phase ◽  
Methyl Tert Butyl Ether ◽  
Phase Reaction ◽  
Oh Radical ◽  
Butyl Ether ◽  
Gas Phase Reaction ◽  
Tert Butyl

Catalytic properties of the gallophosphate cloverite 1 Gas-phase formation of methyl tert.-butyl ether

1996 ◽  
Vol 7 (2-3) ◽  
pp. 119-123 ◽  
Author(s):  
Manfred Richter ◽  
Heide-Lore Zubowa ◽  
Reinhard Eckelt ◽  
Rolf Fricke
Keyword(s):  
Gas Phase ◽  
Phase Formation ◽  
Catalytic Properties ◽  
Methyl Tert Butyl Ether ◽  
Butyl Ether ◽  
Tert Butyl
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