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Effect of preparation technique on the properties of Mo-containing Al-MCM-41

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Abstract

The Al-MCM-41 has been used as support to prepare Mo-containing catalysts. The 12- molybdophosphoric heteropoly acid (HPMo) is used as initial compound. The catalysts are synthesized by two different methods: incipient impregnation with aqueous solution of the acid and mechanochemical synthesis. The samples were tested in the reaction of the thiophene hydrodesulfurization after activation with mixture H2 + H2S. The effect of the preparation method of the catalysts on their physicochemical and catalytic properties has been studied. A partial destruction of the loaded compound is observed in mechanochemically treated sample whereas the aggregates are formed from the particles of different size in the impregnated sample. The specific surface area of the sample prepared by mechanical–chemical treatment decreases 2–3 times, while the total pore volume is about four times lower. The HDS activity is higher on the impregnated sample than on the mechanochemically treated one.

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Authors and Affiliations

  1. Institute of Catalysis, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

    Nina Georgieva Kostova, Elka Kraleva & Alla A. Spojakina

  2. Institute of Geotechnics, Slovak Academy of Sciences, 04353, Kosice, Slovakia

    Erika Godocikova & Peter Balaz

Authors
  1. Nina Georgieva Kostova
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  2. Elka Kraleva
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  3. Alla A. Spojakina
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  4. Erika Godocikova
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  5. Peter Balaz
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Correspondence to Nina Georgieva Kostova.

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Kostova, N.G., Kraleva, E., Spojakina, A.A. et al. Effect of preparation technique on the properties of Mo-containing Al-MCM-41. J Mater Sci 42, 3321–3325 (2007). https://doi.org/10.1007/s10853-006-0817-x

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  • DOI: https://doi.org/10.1007/s10853-006-0817-x

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