Page - 147 - in Advanced Chemical Kinetics

3.2.SEM(EDX)analysis Figure1BshowsSEMimagesofSep,FA,FA-Sep,0.25MZnO-FA-Sepandelementalmapping images of the supported catalyst. The Sep exhibits awavypattern among the layers. The FA displays spherical (with air holes) andnon-shapedparticles. For theFA-Sep, the structures of the Sep and FA are retainedwith Si, Ca andAlmajor,Mg and Feminor constituents. The Catalysts DZnO (nm) a BET(m2g 1)b Vpore (cm 3g 1)c Rpore (Å) d 0.25MZnO 16.08 7.58 0.012 17.7 FA – 1.80 0.003 14.9 Sep – 104.5 0.140 14.9 FA-Sep – 46.4 0.006 15.6 0.125MZnO-FA-Sep 13.11 61.7 0.111 14.9 0.25MZnO-FA-Sep 9.85 62.3 0.121 15.4 0.5MZnO-FA-Sep 11.66 50.2 0.097 14.8 aCalculated fromthe (101)diffractionpeakofZnOusing theScherrer equation. bDetermined fromnitrogenadsorption–desorption isothermsusingBETequation. cDetermined fromcumulativeadsorptionporevolumeusingBJHmethod. dDetermined fromadsorptionporesizeusingBJHmethod. Table1. Crystalline sizes (DZnO), surface areas (BET), total porevolumes (Vpore) andpore radius (Rpore) of 0.25MZnO, supports and supported catalysts. Figure1B. SEMandmapping imagesofSep,FA,FA-Sepand0.25MZnO-FA-Sep. Adsorption, Kinetics and Photoactivity of ZnO-Supported Fly Ash-Sepiolite Ternary Catalyst http://dx.doi.org/10.5772/intechopen.70504 147