Support effects on Cu-Cr/Al2O3 catalysts for CO oxidation

Experimental and computational studies on zeolite-Y encapsulated iron(iii) and nickel(ii) complexes containing mixed-ligands of 2,2′-bipyridine and 1,10-phenanthroline

“…Thus, these results indicate that [Fe(bipy)(phen)Cl 2 ] + -Y and [Ni(bipy)(phen)Cl] + -Y require a relatively longer contact time to attain the maximum equilibrium for generation of hydroxyl radicals. 1,28,30 To study the role of catalyst and hydrogen peroxide in degradation of OPP through specic time, two independent experiments have been carried out. In one experiment, hydrogen peroxide was used without any catalyst, in the other set of experiments; hydrogen peroxide together with iron(III) and nickel(II) catalysts was employed with initial OPP concentration of 25 mg L À1 .…”

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

“…Copper chromite catalysts have been studied in detail for CO oxidation. The studies have been attributed to the catalytic activity and stability tests [225,226], postulating mechanisms [227], characterization of catalysts [228,229], rapid evaluation of the catalysts [230], search for the active sites on the catalysts [231,232], kinetics of the reaction [228,233], catalysts deactivation [229,234], etc. Pantaleo et al [235] reported the catalytic tests in CO oxidation indicated a synergetic effect between copper and chromium in the mixed oxides supported on silica and calcined at 500 0 C. Xavier et al [236] found that Cu-Cr based catalysts are effective for CO oxidation at lower temperatures.…”

Cobalt-chitosan: Magnetic and biodegradable heterogeneous catalyst for selective aerobic oxidation of alkyl arenes and alcohols

“…21 Cobalt-based catalyst systems are widely used for oxidation of alcohols, [22][23][24][25][26][27][28][29][30][31] sulfides, 32 oximes 33 and alkylbenzenes. 34,35 Recently, to overcome the drawbacks of homogeneous cobalt-based catalysts, much attention has been focused on immobilization of * For correspondence cobalt onto inorganic solid supports such as TiO 2 , 31 silica, 36 ZnO, 37 zeolites, 38,39 Montmorillonite, 40 and commercial carbon. 41 Natural organic polymers such as cellulose and chitosan are interesting materials as suitable supports for catalytic applications due to low cost and high surface area.…”