Fig. 9From: Recent trends in vanadium-based SCR catalysts for NOx reduction in industrial applications: stationary sourcesStructures of supported a monomeric and b oligomeric VOx units. c Crystal structure of orthorhombic phase V2O5 (Pmnm, No.59). d Raman spectra of bulk V2O5 (V2O5-ox) and TiO2-supported V2O5 catalysts (1, 3, 5 and 9 wt % V2O5/TiO2) [76]Back to article page