1 Ocak 2010 Dergi makalesi Açık Erişim

Aktas, Ozge; Yasyerli, Sena; Dogu, Gulsen; Dogu, Timur

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        "affiliation": "Gazi Univ, Dept Chem Engn, TR-06570 Ankara, Turkey", 
        "name": "Aktas, Ozge"
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      {
        "affiliation": "Gazi Univ, Dept Chem Engn, TR-06570 Ankara, Turkey", 
        "name": "Yasyerli, Sena"
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      {
        "affiliation": "Gazi Univ, Dept Chem Engn, TR-06570 Ankara, Turkey", 
        "name": "Dogu, Gulsen"
      }, 
      {
        "affiliation": "Middle E Tech Univ, Dept Chem Engn, TR-06531 Ankara, Turkey", 
        "name": "Dogu, Timur"
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    "description": "Vanadia- and/or ceria-incorporated SBA-15-like materials were prepared by impregnation and one-pot hydrothermal synthesis procedures at different solution pH values. The pH of the synthesis solution was found to have a very strong effect on the pore structure, chemical composition, and morphology of the synthesized materials. Materials synthesized by impregnation of V and/or Ce and by the one-pot hydrothermal route at pH << 1.0 showed the characteristic ordered pore structure of SBA-15. However, the materials prepared by the one-pot synthesis route at pH 1.5 gave complex pore structures with bottleneck-shaped and/or slit-like interconnected pores. Activity tests in the selective oxidation of propane showed higher activities for the V-incorporated materials than for the materials containing Ce and V-Ce. Catalysts synthesized by impregnation gave higher propane conversions. However, the propylene selectivity values were higher with the catalysts prepared by the one-pot route. An increase in the temperature from 550 to 600 degrees C led to increases in both the conversion and the propylene selectivity with the V- and V-Ce-incorporated materials prepared by the one-pot procedure at pH 1.5. For the V-incorporated catalyst prepared by this route, the propane conversion and propylene selectivity were obtained as 40% and 62%, respectively, at a space time of 0.4 s.g.cm(-3) and a temperature of 600 degrees C.", 
    "doi": "10.1021/ie901672b", 
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      "issue": "15", 
      "pages": "6790-6802", 
      "title": "INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH", 
      "volume": "49"
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    "publication_date": "2010-01-01", 
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    "title": "Effect of Synthesis Conditions on the Structure and Catalytic Performance of V- and Ce-Incorporated SBA-15-like Materials in Propane Selective Oxidation"
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