Research Article
Design and Synthesis of Reusable Nanoparticles for Reversible Chemisorption of Hexavalent Chromium Anions from Aqueous Media and Catalysis
Table 2
Catalytic bromination activities of LEuH-Cl, Fe3O4, Fe3O4@SiO2, and Fe3O4@SiO2@PW10 catalysts.
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Reaction conditions are as follows: 10 ml of 1.0 mM phenol red in water + 10 ml of 10.0 mM NH4Br in water + 0.5 g of catalyst + 2.5 mM·H2O2, in a round-bottomed flask. Time = 10 minutes, T = 298 K, and atm. Rate of conversion = mole Br− oxidized per total weight of catalyst (g) per second. Symbol “” denotes a multiplication sign. |