Synthesis, characterization and catalytic behavior of functionalized mesoporous SBA-15 with various organo-silanes

ÇITAK A., ERDEM B., ERDEM S., ÖKSÜZOĞLU R. M.

JOURNAL OF COLLOID AND INTERFACE SCIENCE, cilt.369, ss.160-163, 2012 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 369
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.jcis.2011.11.070
  • Dergi Adı: JOURNAL OF COLLOID AND INTERFACE SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.160-163
  • Anahtar Kelimeler: SBA-15, Esterification, Functionalization, Mesoporous silica, SULFONIC-ACID GROUPS, SILICA CATALYSTS, LACTIC-ACID, ESTERIFICATION, ETHERIFICATION, NANOPARTICLES, RESINS
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Mesoporous silica SBA-15 has been synthesized and functionalized by one-step synthesis method to widen their various application possibilities. In this study, phenyltrimethoxysilane (PTMS), 3-mercapto-propyltrimethoxysilane (MPTMS) and trimethoxypropylsilane (TMPS) were used as silane precursors for the functionalization, and after treated with HCl solution, their catalytic activities were evaluated in the lactic acid-methanol esterification. The presence of anchoring of functional groups on SBA-15 was proved by XRD, FT-IR, BET surface area and pore size distributions. Good catalytic activity was observed especially for SBA-15-SO3H-MPTMS, and the catalytic activity order was determined as follows: SBA-15SO(3)H-MPTMS > SBA-15-TMPS > SBA-15-PTMS, which is directly associated with the surface area, pore size and pore volume. As compared with homogeneous catalyst, SBA-15-SO3H-MPTMS heterogeneous catalyst shows remarkable performance, such as separation, recovery and reusability. (C) 2011 Elsevier Inc. All rights reserved.