NaAlO2-Promoted Mesoporous Catalysts for Room temperature Knoevenagel Condensation Reaction

Abstract

Mesoporous solid base catalysts are essential candidates for green and sustainable catalytic processes. In this work, novel mesoporous solid base catalysts was synthesized by promoting mesoporous supports with sodium aluminate (NaAlO2). The prepared catalysts are characterized using a wide variety of molecular and solid-state techniques to determine their structural and textural properties. The catalysts texture was strongly affected by the promotion of sodium aluminate. The nature of the support and the sodium aluminate loading are shown to play a crucial role on the total basicity. In turn, these NaAlO2-containing mesoporous materials showed high catalytic activity for Knoevenagel condensation under solvent free reaction conditions. The catalysts are truly heterogeneous without leaching any active sites and also showed good reusability.