Degradation of methyl tert-butyl ether by catalytic wet air oxidation over Rh/TiO2–CeO2 catalysts

Cervantes, A.; Angel, G. Del; Torres‐Torres, Gilberto; Lafaye, Gwendoline; Barbier, Jr. J.; Beltramini, Jorge; Cabañas-Moreno, J. Gerardo; Monteros, A. Espinosa de los

doi:10.1016/j.cattod.2012.11.021

Cited by 23 publications

(15 citation statements)

References 22 publications

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“…Raman spectroscopy results are consistent with X-ray diffraction measurements. The Raman spectra of CeO 2 show a peak around 465 cm −1 , which is due to the cubic fluorite structure of ceria [23]. Titania exhibits peaks due to the titania-anatase phase, and again there are no peaks corresponding to the titania-rutile phase.…”

Section: Raman Spectroscopymentioning

confidence: 95%

“…A strong interaction between support and metal (SMSI) exists in the CeO 2 -supported metal catalysts and gives the catalysts with high activity for many catalytic reactions [20][21][22]. However, the main problem associated with the ceria is poor thermal stability and low lattice oxygen vacancies [23]. On the other hand, lattice oxygen of the support is very important for the SMSI interactions.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Rh/Ce x Ti 1−x O 2 catalysts for synthesis of oxygenates from syngas using XPS and TPR techniques

2016

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Section: Raman Spectroscopymentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Evaluation of Rh/Ce x Ti 1−x O 2 catalysts for synthesis of oxygenates from syngas using XPS and TPR techniques

2016

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“…Since at a higher concentration of acid sites there are fewer intermediates, such as tert‐butanol, 2‐methylpropene, acetone and methanol, which allows complete mineralization to CO 2 . The importance of this work lies mainly in obtaining catalytic materials with greater acidity for the complete oxidation of oxygenated compounds without generating reaction intermediates and replace to use of noble metals as active sites which have a high cost . The greater presence of acidity in the materials modified with copper by sol gel is possibly due to the interaction between this metal with the alumina to form the copper aluminate spinel which consequently has a significant effect on the catalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Effect of the CuAl₂O₄and CuAlO₂Phases in Catalytic Wet Air Oxidation of ETBE and TAME using CuO/γ‐Al₂O₃catalysts

et al. 2019

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This paper studies Cu/Al 2 O 3 catalysts, synthesized in two ways: copper deposit in the synthesis of alumina (sol gel) and incipient impregnation stabilized at 400 °C. The materials were characterized by X‐ray diffraction studies, nitrogen physisorption, temperature programmed reduction of H 2 , dehydration of isopropanol, scanning electronic microscopy, transmission electronic microscopy, which were evaluated in the liquid phase oxidation reaction of ethyl tert‐butyl ether and tert‐amyl methyl ether. The formation of CuAl 2 O 4 and CuAlO 2 in the samples synthesized by sol gel, led to a modification of the texture, thus resulting in an expansion of the specific area of the materials. CuAl 2 O 4 and CuAlO 2 have been identified by DRX from a content of 10 % Copper, the first showed the highest intensity with this technique. In the same way, these species favor the presence of Lewis acid sites; this is reflected in the materials with (Di‐isopropyl Ether) DIPE of 96.7 % and 91.1 % for the samples SAlCu5 and SAlCu15 respectively. The catalytic activity of the materials prepared by sol gel is in the function of the number of surface acid sites, the smaller particle size of the Cu and the surface of the contact, in the case of the ETBE meanwhile for TAME the activity was based mainly on the strength of the present acid sites. With impregnated materials, the activity is attributed to the smaller particle size of the Cu and the greater strength of the surface acid sites in the solid. The formation of spinel species inhibits the leaching phenomenon in the reaction milieu.

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“…When a noble metal is present, such as Ru for the CWAO of p-hydroxybenzoic acid, the decrease in the molar ratio of Ce/Ti from 3 to 1/3 improves the activity of the catalysts [21]. More recently, Rh/TiO 2 -CeO 2 were successfully tested for the CWAO of methyl tert-butyl ether (MTBE) in a batch reactor [22]. The best results were obtained for Rh supported on TiO 2 doped with 5 wt% CeO 2 .…”

Section: Introductionmentioning

confidence: 97%

Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2–CeO2 oxides

et al. 2015

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Degradation of methyl tert-butyl ether by catalytic wet air oxidation over Rh/TiO2–CeO2 catalysts

Cited by 23 publications

References 22 publications

Evaluation of Rh/Ce x Ti 1−x O 2 catalysts for synthesis of oxygenates from syngas using XPS and TPR techniques

Evaluation of Rh/Ce x Ti 1−x O 2 catalysts for synthesis of oxygenates from syngas using XPS and TPR techniques

Effect of the CuAl₂O₄and CuAlO₂Phases in Catalytic Wet Air Oxidation of ETBE and TAME using CuO/γ‐Al₂O₃catalysts

Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2–CeO2 oxides

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Degradation of methyl tert-butyl ether by catalytic wet air oxidation over Rh/TiO2–CeO2 catalysts

Cited by 23 publications

References 22 publications

Evaluation of Rh/Ce x Ti 1−x O 2 catalysts for synthesis of oxygenates from syngas using XPS and TPR techniques

Evaluation of Rh/Ce x Ti 1−x O 2 catalysts for synthesis of oxygenates from syngas using XPS and TPR techniques

Effect of the CuAl2O4and CuAlO2Phases in Catalytic Wet Air Oxidation of ETBE and TAME using CuO/γ‐Al2O3catalysts

Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2–CeO2 oxides

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Effect of the CuAl₂O₄and CuAlO₂Phases in Catalytic Wet Air Oxidation of ETBE and TAME using CuO/γ‐Al₂O₃catalysts