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Supported Ni–W–O Mixed Oxides as Selective Catalysts for the Oxidative Dehydrogenation of Ethane

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Abstract

Mixed Ni–W–O catalysts (with a W/(Ni + W) atomic ratio of 0.3) supported on γ-Al2O3 or on mesoporous alumina have been prepared, characterized and tested in the oxidation of ethane. For comparison unsupported and supported NiO as well as bulk Ni–W–O mixed oxides catalysts have also been studied. Supported Ni–W–O materials show interesting catalytic performances in the oxidative dehydrogenation of ethane. They show similar catalytic activities than the corresponding unsupported Ni–W–O catalysts. However, the selectivity to ethylene over supported catalysts was higher than that achieved over unsupported samples (the selectivity to ethylene followed the trend: mesoporous-supported > γ-Al2O3-supported > unsupported Ni–W–O). In addition, it has also been observed that Ni–W–O catalysts are more efficient than the corresponding W-free NiO catalysts. The discussion of the catalytic results will be undertaken on the basis of the modification of active sites of NiO when incorporating WO3 and/or metal oxide supports.

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Acknowledgment

Financial support from DGICYT in Spain through Project CTQ2006-09358/BQU is gratefully acknowledged. The authors thank M.T. Navarro for the preparation of mesoporous alumina.

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Authors and Affiliations

  1. Departamento de Ingeniería Química, Universidad de Valencia, Dr. Moliner 50, 46100, Burjassot, Spain

    B. Solsona, A. Dejoz & M. I. Vázquez

  2. Instituto Tecnología Química, UPV-CSIC, Avda Los Naranjos s/n, 46022, Valencia, Spain

    F. Ivars, P. Concepción & J. M. López Nieto

Authors
  1. B. Solsona
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  2. F. Ivars
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  3. A. Dejoz
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  4. P. Concepción
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  5. M. I. Vázquez
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  6. J. M. López Nieto
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Correspondence to J. M. López Nieto.

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Solsona, B., Ivars, F., Dejoz, A. et al. Supported Ni–W–O Mixed Oxides as Selective Catalysts for the Oxidative Dehydrogenation of Ethane. Top Catal 52, 751–757 (2009). https://doi.org/10.1007/s11244-009-9206-4

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