Selective methane bromination over sulfated zirconia in SBA-15 catalysts

Degirmenci V., YILMAZ A., ÜNER D.

CATALYSIS TODAY, cilt.142, ss.30-33, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 142
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.cattod.2009.01.011
  • Dergi Adı: CATALYSIS TODAY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.30-33
  • Anahtar Kelimeler: Methane activation, SBA-15, Sulfated zirconia, Mesoporous silica, CAO/ZEOLITE COMPOSITES, INTEGRATED PROCESS, MESOPOROUS SILICA, METHYL-CHLORIDE, ACTIVATION, CONVERSION, NEUTRALIZATION, CONDENSATION, HYDROCARBONS, COPOLYMER
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Methane activation via bromination can be a feasible route with selective synthesis of mono-bromomethane. It is known that the condensation of brominated products into higher hydrocarbons can result in coking and deactivation in the presence of di-bromomethane. In this study, selective production of methyl bromide was investigated over sulfated ZrO2 included SBA-15 structures. It was observed that the higher the ZrO2 amounts the higher the conversion, while the catalyst remained >99% selective for the monobrominated methane. Over 25 mol.% ZrO2 included SBA-15 catalyst with a BET surface area of 246 m(2)/g, methane was brominated with 69% conversion at 340 degrees C and only CH3Br was selectively produced. (C) 2009 Elsevier B.V. All rights reserved