1 Ocak 2013 Dergi makalesi Açık Erişim

Vu Thi Thu Ha; Sarioglan, Alper; Erdem-Senatalar, Ayse; Ben Taarit, Younes

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  "@id": 89341, 
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  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France", 
      "name": "Vu Thi Thu Ha"
    }, 
    {
      "@type": "Person", 
      "affiliation": "TUBITAK Marmara Res Ctr, Energy Inst, TR-41470 Gebze, Kocaeli, Turkey", 
      "name": "Sarioglan, Alper"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Chem Engn, TR-34469 Istanbul, Turkey", 
      "name": "Erdem-Senatalar, Ayse"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France", 
      "name": "Ben Taarit, Younes"
    }
  ], 
  "datePublished": "2013-01-01", 
  "description": "EPR and Al-27 NMR were used to probe the nature of the phases that formed during the conversion of methane at high temperature on the Mo/HZSM-5 catalyst. It was shown that ammonium 6-molybdoaluminate III supported over silica gave rise, when reduced, to an EPR signal due to Mo5+ ions with the odd electron interacting with the nonzero nuclear spin of aluminum in much the same way as in HZSM-5. Therefore, the occurrence of this particular spin interaction should not be taken as evidence of the location of the Mo5+ ions at the exchange sites of the zeolites. Rather, combined Al-27 NMR and EPR investigation of the reduction of a pure polycrystalline aluminum molybdate suggested that the observed signal in the case of the zeolite composite catalyst was due to Mo5+ ions formed within the Al-2(MoO4)(3) extra phase that formed upon dealumination of the zeolite in the presence of molybdenum. (c) 2013 Elsevier B.V. All rights reserved.", 
  "headline": "An EPR and NMR study on Mo/HZSM-5 catalysts for the aromatization of methane: Investigation of the location of the pentavalent molybdenum", 
  "identifier": 89341, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "An EPR and NMR study on Mo/HZSM-5 catalysts for the aromatization of methane: Investigation of the location of the pentavalent molybdenum", 
  "url": "https://aperta.ulakbim.gov.tr/record/89341"
}