1 Ocak 2013 Dergi makalesi Açık Erişim

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

Citation Style Language JSON

{
  "DOI": "10.1016/j.molcata.2013.06.020", 
  "abstract": "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.", 
  "author": [
    {
      "family": "Vu Thi Thu Ha"
    }, 
    {
      "family": "Sarioglan", 
      "given": " Alper"
    }, 
    {
      "family": "Erdem-Senatalar", 
      "given": " Ayse"
    }, 
    {
      "family": "Ben Taarit", 
      "given": " Younes"
    }
  ], 
  "container_title": "JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL", 
  "id": "89341", 
  "issued": {
    "date-parts": [
      [
        2013, 
        1, 
        1
      ]
    ]
  }, 
  "page": "279-284", 
  "title": "An EPR and NMR study on Mo/HZSM-5 catalysts for the aromatization of methane: Investigation of the location of the pentavalent molybdenum", 
  "type": "article-journal", 
  "volume": "378"
}