An Efficient and Eco-friendly MoO3–SiO2 Solid Acid Catalyst for Electrophilic Aromatic Nitration with N2O5
Electrophilic aromatic nitration using N2O5 as a green nitrating agent catalyzed by MoO3–SiO2 under mild conditions has been described. A series of MoO3–SiO2 catalysts with varying MoO3 loadings (5–20 mol%) were prepared by sol–gel technique and characterized using FTIR, XRD, SEM, BET and NH3–TPD to study its surface properties. MoO3–SiO2 shows good catalytic activity and reusability for the nitration of alkyl and halogen aromatics giving high conversions, but less efficiency for the deactivated aromatics. Reactions conducted under non-acidic conditions using N2O5 makes the process safe and environmentally friendly.
KeywordsNitration Solid acid catalyst N2O5 Catalysis
We are grateful for the financial support from the National Nature Science Foundation of China-Academy of Engineering Physics (No. 10976014) and Nature Science Foundation of Jiangsu Province (No. BK2011697).
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