Novel CoMn2O4 as a highly efficient catalyst for the oxidation of o-, m-, p-xylene: Preparation and kinetic study

Cerium-Doped CuFe-Layered Catalyst for the Enhanced Oxidation of o-Xylene and N,N-Dimethylacetamide: Insights into the Effects of Temperature and Space Velocity

“…Previous catalytic oxidation studies have shown that mass transfer limitations affect catalytic efficiency . At high space velocities, external diffusion was found to be negligible . On the other hand, increasing the space velocity increases the amount of oxygen reaching the catalyst .…”

“…46 At high space velocities, external diffusion was found to be negligible. 49 On the other hand, increasing the space velocity increases the amount of oxygen reaching the catalyst. 50 Oxygen also provides oxidation at the moment of contact between the solvent and the catalyst surface, where oxygen is held.…”

Beneficial Synergistic Intermetallic Effect in ZnCo2O4 for Enhancing the Limonene Oxidation Catalysis

“…It was revealed that in comparison with Co 3 O 4 , both Co and neighboring Ni sites could have an interaction with the same O atom in peroxymonosulfate, enhancing the number of electron transfer for breaking the O–O bond. Li and co-workers found the better catalytic performance of CoMn 2 O 4 for the oxidation of o -xylene, m -xylene, and p -xylene than that of Co 3 O 4 and MnO 2 . The high activity was associated with plentiful Co 2+ , Mn 3+ , and surface lattice oxygen and improved reducibility due to the interaction between cobalt and manganese.…”

“…This beneficial synergistic intermetallic effect in the spinel oxides has also been reported in the recent works with regard to different catalytic systems. 30,31 Moreover, the high-surfacearea mesoporous structure is also beneficial for performance enhancement by supplying plentiful catalytically active sites and alleviating the diffusional limitations.…”