Characterization of mesoporous and microporous molecular sieves containing niobium and tantalum

Add time:07/23/2019    Source:sciencedirect.com

Niobium- and tantalum-containing mesoporous molecular sieves MCM-41 have been stud-ied by X-ray powder diffraction, 29Si MAS NMR, electron spin resonance, nitrogen adsorption and UV-Vis spectroscopy and compared with niobium- and tantalum-containing silicalite-1 The results of the physical characterization indicate that it is possible to prepare niobium- and tantalum-containing MCM-41 and silicalite-1, where isolated Nb(V) or Ta(V) species are connected to framework defect sites via formation of Nb-O-Si and Ta-O-Si bonds. The results of this study allow the preparation of microporous and mesoporous molecular sieves with remarkable redox properties (as revealed by ESR), making them potential catalysts for oxidation reactions.

We also recommend Trading Suppliers and Manufacturers of TANTALUM (V) ISOPROPOXIDE (cas 16761-83-4). Pls Click Website Link as below: cas 16761-83-4 suppliers

Prev:Tantalum(V) alkoxides : Electrochemical synthesis, mass-spectral investigation and oxoalkoxocomplexes
Next:Microwave plasma annealing of sol-gel deposited tantalum oxide and zinc oxide films)