A Novel Vanadium n-propylamino Phosphate Catalyst: Synthesis, Characterization and Applications

作者：Anumula Rajini^*; Nookaraju Muralasetti; Selvaraj Kaliaperumal; Reddy Ingala Ajit Kumar; Narayanan Venkatathri

来源：Materials Research, 2013, 16(1): 181-189.

DOI：10.1590/S1516-14392012005000161

• vanadium
• n-propylamino phosphate
• octahydroquinazolinones
• synthesis

A novel, lamellar type Vanadium n-propylamino phosphate catalyst is synthesized and characterized by using various physicochemical techniques such as Powder X-ray diffraction, Scanning electron microscopy/Energy dispersive X-ray analysis, Thermogravimetry/Differential thermal analysis, Fourier transform Infrared analysis, Electron spin resonance spectroscopy, Ultraviolet - Visible Diffuse reflectance spectroscopy, X-ray Photoelectron spectroscopy, P-31 Magic angle spinning Nuclear Magnetic Resonance spectroscopy and Catalytic applications toward Octahydroquinazolinone synthesis. It is found that the n-propylamine is present as sandwich between Vanadyl phosphate layers. Most of the Vanadium is present as V4+ ions in tetrahedral co-ordination. Vanadium n-propylamino phosphate catalyses Octahydroquinazolinone synthesis more effeciently and the optimum conditions required for Octahydroquinazolinone synthesis are, Benzaldehyde (2 mmol), Dimedone (2 mmol), Urea (4 mmol), Methanol + Water (1:1, 5 mL) and Catalyst (0.05 g). A plausible mechanism is also proposed.

• 出版日期2013-2