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Improved catalytic properties of Co3O4-impregnated La2O3/MgO over Co3O4/MgO catalyst in the oxidative dehydrogenation of ethylbenzene

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Abstract

A series of lanthanum oxide (La2O3—2–14 wt%)-encapsulated Co3O4/MgO catalysts and bare Co/MgO solid oxides were prepared by wetness impregnation method. Among all catalysts, La2O3-promoted Co3O4/MgO (CM) was found to be remarkable in terms of superior promotional effect of La oxide species. Therefore, La2O3-incorporated Co3O4/MgO (LCM) catalysts afforded unusual catalytic activity efficiency with respect to high EB conversion and styrene selectivity due to the synergistic effect of Co–La species. By contrast, bare Co3O4/MgO solid oxide (CM) catalyst afforded low EB conversion with mild catalytic activity due to the absence of promotional role of La oxide.

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Authors and Affiliations

  1. Catalysis and Fine Chemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India

    Venkata Rao Madduluri, Raju Narsinga, Dosa Mallesh, P. Mahesh Kumar, Sreedhar Bojja & Kamaraju Seetha Rama Rao

  2. Chemistry Department, Osmania University, Hyderabad, India

    Shankar Barapati

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  1. Venkata Rao Madduluri
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  2. Raju Narsinga
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  3. Dosa Mallesh
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  4. P. Mahesh Kumar
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  7. Kamaraju Seetha Rama Rao
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Correspondence to Venkata Rao Madduluri or Kamaraju Seetha Rama Rao.

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Madduluri, V.R., Narsinga, R., Mallesh, D. et al. Improved catalytic properties of Co3O4-impregnated La2O3/MgO over Co3O4/MgO catalyst in the oxidative dehydrogenation of ethylbenzene. Res Chem Intermed 46, 1881–1907 (2020). https://doi.org/10.1007/s11164-019-04070-1

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