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Catalytic Combustion of Methyl Tert-Butyl Ether on Rh/γ-Al2O3 and Rh/γ-Al2O3–CeO2 Catalysts: Effects of Thermal Treatments, Cerium Oxide and Particle Size

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Abstract

The effects of activation pretreatments, Rh particle size and content of cerium oxide on Rh/γ-Al2O3 catalysts for the oxidation of methyl tert-butyl ether (MTBE) were investigated. Three different conditions were used for the activation of the catalysts: (1) with air flow, (2) using a mixture of air and MTBE, and (3) by hydrogen reduction followed by oxidation with air. On Rh/γ-Al2O3 catalyst the thermal pretreatments are of great importance for the MTBE oxidation. However, on Rh/γ-Al2O3–Ce1 catalyst, the total combustion of MTBE was reached at a temperature of 200 °C lower than that obtained with the Rh/γ-Al2O3 catalyst at whatever thermal treatment applied. A Rhº/Rhδ+ and Ce3+/Ce4+ species were identified by XPS suggesting that they are the responsible of the high activity showed by the Rh/γ-Al2O3–Ce1 catalyst. A particle size effect for MTBE oxidation was observed on Rh/γ-Al2O3 catalysts, large Rh particles are more active than the small ones.

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Acknowledgment

We acknowledge CONACYT for the support provided to the Project SEP-2004-COI-46689Q.

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Authors and Affiliations

  1. Departamento de Química, Laboratorio de Catálisis, Universidad Autónoma Metropolitana-Iztapalapa, DCBI Av. San Rafael Atlixco No. 186, CP 09340, México, D.F, México

    I. Cuauhtémoc & G. Del Ángel

  2. Universidad Juárez Autónoma de Tabasco, Laboratorio de Catálisis Heterogénea, Área de Química, DACB, Km.-1 Carretera Cunduacán-Jalpa de Méndez AP. 24, C.P. 86690, Cunduacán, T.A.B, México

    G. Torres

  3. Instituto Mexicano del Petróleo, Programa de Energia Molecular, Eje Central Lázaro Cárdenas 152, AP. 14–805, C.P. 07730, México, D.F, México

    C. Angeles-Chavez

  4. Centro de Investigaciones en Química Inorgánica de la Universidad de Guanajuato, Noria Alta s/n, Col. Noria Alta, Gto. 36000, Guanajuato, México

    E. Ramos

Authors
  1. I. Cuauhtémoc
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  2. G. Del Ángel
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  3. G. Torres
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  4. C. Angeles-Chavez
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  5. E. Ramos
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Correspondence to G. Del Ángel.

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Cuauhtémoc, I., Del Ángel, G., Torres, G. et al. Catalytic Combustion of Methyl Tert-Butyl Ether on Rh/γ-Al2O3 and Rh/γ-Al2O3–CeO2 Catalysts: Effects of Thermal Treatments, Cerium Oxide and Particle Size. Top Catal 54, 153–159 (2011). https://doi.org/10.1007/s11244-011-9633-x

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  • DOI: https://doi.org/10.1007/s11244-011-9633-x

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