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) in excess oxygen has been proven to be an effective technology for the removal of nitrogen oxide emissions from power plants and heavy-duty diesel engines [ 1 , 2 ]. For the NH 3 -SCR reaction, the V 2 O 5 /TiO 2 catalyst promoted by WO 3 or MoO 3

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vapor deposition CVD) strongly affect the structure and properties of STM. Titania-silicas can possess (a) complex structure both in the bulk and at the surface layer, as it is in the fumed ST or (b) separated phases of TiO 2 and SiO 2 with a clear

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palladium systems supported on Al 2 O 3 [ 1 , 2 ], C [ 3 – 5 ], SnO 2 [ 6 – 8 ], CeO 2 [ 9 ], TiO 2 [ 10 , 11 ], and pumice [ 12 ]. Monometallic palladium catalysts are not very active in the reaction of nitrate reduction. However, they show high

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AVARRO , S. , 2014 . Minimization of metabenztiazuron residues in leaching water using amended soils and photocatalytic treatment with TiO 2 and ZnO . Journal of Environmental Sciences . 26 . 757 – 764

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diffraction peak of amorphous silica centered at about 2 θ = 23°, the same as the XRD pattern of the SBA-15 sample. The comparison with the XRD pattern of TiO 2 evidences clearly that no diffraction lines for crystalline TiO 2 anatase could be detected. It

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Introduction The photocatalyst, for example, titanium dioxide (TiO 2 ) absorbs light with suitable wavelength in photocatalysis. An electron from the valence band is transferred to the conduction band and creates negative

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conditions—contact time, kind of light, intensity of illumination, relative humidity of the feed and the oxygen/pollutant feed ratio. These investigations are usually carried out using a standard reference photocatalyst, most often it is TiO 2 Degussa P25

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Titanium(IV)–EDTA complex

Kinetics of thermal decomposition by non-isothermal procedures

Journal of Thermal Analysis and Calorimetry
Authors:
Luciana Guinesi
,
C. Ribeiro
,
Marisa Crespi
,
A. Santos
, and
Marisa Capela

Abstract  

This work aims the evaluation of the kinetic triplets corresponding to the two successive steps of thermal decomposition of Ti(IV)–ethylenediaminetetraacetate complex. Applying the isoconversional Wall–Flynn–Ozawa method on the DSC curves, average activation energy: E=172.49.7 and 205.312.8 kJ mol–1, and pre-exponential factor: logA=16.380.84 and 18.961.21 min–1 at 95% confidence interval could be obtained, regarding the partial formation of anhydride and subsequent thermal decomposition of uncoordinated carboxylate groups, respectively. From E and logA values, Dollimore and Mlek methods could be applied suggesting PT (Prout–Tompkins) and R3 (contracting volume) as the kinetic model to the partial formation of anhydride and thermal decomposition of the carboxylate groups, respectively.

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]. Carbon supported noble metal sulfides were studied by Ledoux et al. [ 8 ] and Rh sulfide was the best in the second row. The order of reactivity in the HDS of dibenzothiophene was Rh/Al 2 O 3 > Rh/SiO 2 > Rh/SiO 2 –Al 2 O 3 > Rh/TiO 2 (the S BET of

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