Li-doped MgO From Different Preparative Routes for the Oxidative Coupling of Methane

Arndt S., Simon U., Heitz S., Berthold A., Beck B., Goerke O., ...Daha Fazla

TOPICS IN CATALYSIS, cilt.54, sa.16-18, ss.1266-1285, 2011 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 54 Sayı: 16-18
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s11244-011-9749-z
  • Dergi Adı: TOPICS IN CATALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1266-1285
  • Anahtar Kelimeler: Li/MgO, [Li+O-], Oxidative coupling of methane, OCM, Wet impregnation, Precipitation, Single source precursors, Mixed milling, Deactivation, PROMOTED MGO, ORGANOMETALLIC PRECURSORS, ACTIVE-SITES, LITHIUM, TEMPERATURE, CENTERS, ETHANE, NANOPARTICLES, ACTIVATION, SURFACE
  • Akdeniz Üniversitesi Adresli: Hayır

Özet

Li-doped MgO was prepared on different preparative routes and with different loadings. The catalytic activity was found to decay for all catalysts for 40 h time on stream. A detailed structural analysis of 0.5 wt% Li-doped MgO showed heavy losses of Li, reduced surface area and grain growth. A correlation between these factors and the deactivation could not be found. The reaction temperature and the flow rate were found to be the main deactivation parameters.

Li-doped MgO was prepared on different preparative routes and with different loadings. The catalytic activity was found to decay for all catalysts for 40 h time on stream. A detailed structural analysis of 0.5 wt% Li-doped MgO showed heavy losses of Li, reduced surface area and grain growth. A correlation between these factors and the deactivation could not be found. The reaction temperature and the flow rate were found to be the main deactivation parameters.