Exact(6)
This peak corresponds to chromium oxide(Cr2O3) confirming the presence of chromium on the 5 wt% Cr loaded sample [11].
b NH3-TPD profiles of unmodified and Cr loaded ZSM-5 catalysts.
The XRD diffractograms of Fe loaded 0.5 5 wt% and Cr loaded 0.5 5 wt% samples are shown in Fig. 1a, b, respectively.
The Fe and Cr loaded ZSM-5 catalysts are characterised using XRD, BET, and NH3-TPD to determine the structure, porosity and acidity, respectively.
As a consequence, under the irradiation of visible light, the Pd and Cr loaded TiO2 showed higher photo catalytic activity compared to pristine TiO2 and Si-W loaded TiO2 has no catalytic activity, although the threshold absorptions of all metal loaded TiO2 is similar to that of pure TiO2.
Open image in new window Fig. 3 H2-TPR profiles oFeFe an Cr modified ZSM-5 with weight loadings (0.5, 2 and 5 wt%) Table 2 Hydrogen consumption for the Fe and Cr loaded ZSM-5 samples Sample H2 consumption (µmol/g) Peak 1 Peak 2 0.5% Fe 1 11 2% Fe 44455 5% Fe 104 233 0.5% Cr 135 2% Cr 152 5% Cr 169 .
Similar(54)
However, direct Cr uptake by plants only accounted for 9.3% of the total amount of Cr loading in the wetlands.
The catalytic behaviour was studied as a function of the Cr loading and the support.
After metal loading the SSA is seen to decrease and decreases further with increasing Fe and Cr loading from 0.5 to 5 wt%.
Acidic pH was chosen because of this reaction condition provides sufficient Cr loading level for rapid (i.e., single scan) XANES measurements.
For instance, Cr loading in utero was found to markedly attenuate hypoxia-induced contractile dysfunction and fiber atrophy of the diaphragm muscle in the spiny mouse [72, 73].
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