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Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

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 and Reihaneh Malakooti

Volume 11, Issue 6, 2014

Page: [457 - 464] Pages: 8

DOI: 10.2174/1570178611666140218004037

Price: $65

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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