A magnetically recoverable nanocatalyst based on functionalized mesoporous silica
Journal of Molecular Catalysis A: Chemical, cilt.415, ss.17-26, 2016 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 415
- Basım Tarihi: 2016
- Doi Numarası: 10.1016/j.molcata.2016.01.020
- Dergi Adı: Journal of Molecular Catalysis A: Chemical
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.17-26
- Anahtar Kelimeler: Functionalized mesoporous material, Superparamagnetic material, Bio-diesel production, Lewis acidity, Eco-friendly conditions
- Atatürk Üniversitesi Adresli: Hayır
Özet
A magnetically separable 2D-hexagonally ordered thiol functionalized mesoporous silica material (Fe@TFMS) has been synthesized through co-condensation reaction of 3-mercaptopropyltriethoxysilane (MPTES) and tetraethylorthosilicate (TEOS) using cetyltrimethylammonium bromide (CTAB) as a cationic surfactant followed by immobilization of Fe3O4 nanocrystallies at the functionalized mesopore surface. Powder X-ray diffraction (XRD), N2 adsorption/desorption analysis, FT-IR, TEM, FE-SEM, TGA/DTA, CHNS, XPS and NH3-TPD tools are employed to characterize the materials. This functionalized mesoporous material exhibited high catalytic activity in the biodiesel production from a wide range of long chain fatty acids and soybean oil. The material showed high Lewis acidity of 1.02 mmolg-1 with a good Brunauer-Emmett-Teller (BET) surface area of 411 m2 g-1. Fe@TFMS exhibited excellent catalytic efficiency for this esterification reaction using methanol as a solvent cum reactant under eco-friendly and mild reaction conditions (room temperature, 25 °C).