Synthesis of calcium silicate nanoparticles and its catalytic application in Friedlander reaction

ABSTRACT

This work describes the nitric acid catalysed synthesis of wollastonite (CaSiO₃) nanoparticles (NP) from tetraethyl orthosilicate and calcium nitrate tetrahydrate. The formed calcium silicate nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), Powder X-ray Diffraction (PXRD), and scanning electron microscopy (SEM) equipped with X-ray micro analysis. The CaSiO₃ NPs showed an excellent yield (93%) towards the synthesis of quinolines via Friedlander reaction. The synthesized compound 3-dimethyl-7-nitro-9-phenyl-3,4-dihydroacridin-1(2H)-one was characterized by various spectroscopic techniques.

KEYWORDS:

• Calcium silicate
• particles
• nanosized
• Friedlander reaction
• spectroscopy

Acknowledgments

The authors acknowledge the support by VIT-SIF for NMR and GC-MS analysis.

Funding

Prabhakarn Arunachalam and Mohamed A. Ghanem extend their gratitude to the Deanship of Scientific Research, College of Science Research Centre, King Saud University, Saudi Arabia. Dr. S. Mohana Roopan thanks DST and DBT for providing the research fund.