Synthesis, characterization and catalytic behavior of functionalized mesoporous SBA-15 with various organo-silanes
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Date
2012-03-01
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Academic Press Inc Elsevier Science
Abstract
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.
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Keywords
Chemistry, Sba-15, Esterification, Functionalization, Mesoporous silica, Sulfonic-acid groups, Silica catalysts, Lactic-acid, Etherification, Nanoparticles, Resins, Esterification, Esters, Functional groups, Hydrochloric acid, Lactic acid, Mesoporous materials, Methanol, Pore size, Reusability, Silanes, Silica, 3-mercaptopropyltrimethoxysilane, Bet surface area, Catalytic behavior, Functionalized, Hcı solution, Heterogeneous catalyst, Homogeneous catalyst, Mesoporous Sba-15, Mesoporous Silica, One step synthesis, Phenyltrimethoxysilanes, Pore volume, Sba-15, Silane precursor, Surface area, Xrd, Catalyst activity
Citation
Çıtak, A. vd. (2012). "Synthesis, characterization and catalytic behavior of functionalized mesoporous SBA-15 with various organo-silanes". Journal of Colloid and Interface Science, 369(1), 160-163.