Solvent Free Highly Dispersed Zinc Oxide within Confined Space of Al- Containing SBA-15 as an Efficient Catalyst for Knoevenagel Condensation

Author(s): Hesamaldin Mahmoudi, Reihaneh Malakooti.

Journal Name: Letters in Organic Chemistry

Volume 11 , Issue 6 , 2014

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Graphical Abstract:


A mesoporous silica-supported zinc oxide catalyst was successfully synthesized by directly grinding zinc nitrate into the as-prepared Al-Containing SBA-15 occluded with template and characterized by powder X-ray diffraction (XRD), BET nitrogen adsorption-desorption methods, IR spectroscopy, transmission electron microscopy and diffuse reflectance UV-Vis spectroscopy. This solvent-free method not only saves the time and energy, but also enables a high dispersion of zinc oxide without pore blocking in the channels of mesoporous silica. The XRD and TEM analyses show that textural properties of Al-SBA-15 retained after coating process. The resulting material was successfully applied as a heterogeneous catalyst for Knoevenagel Condensation in good to excellent yields under mild conditions.

Keywords: ZnO. Al-SBA-15, mesoporous, heterogeneous catalyst, solvent-free, knoevenagel condensation.

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Article Details

Year: 2014
Page: [457 - 464]
Pages: 8
DOI: 10.2174/1570178611666140218004037
Price: $65

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PDF: 19