Effect of carriers and additives on the activity and stability of copper-based catalysts for the dehydrogenation of cyclohexanol

A non-alkoxide sol–gel route to highly active and selective Cu–Cr catalysts for glycerol conversion

“…Cu-Cr catalysts have been prepared by a variety of synthetic methods, involving the reduction of Cu-Cr oxides prepared by Adkins' route, 14 template method, [15][16][17] citric acid complex method, 18 precipitation, [19][20][21] and thermal decomposition. 22 The sol-gel method has promising potential for the synthesis of mixed oxides, 23 the relatively low calcination temperature required and the high purity and good chemical homogeneity in the final materials.…”

Spectroscopic insights leading to a better understanding of site-isolation in heterogeneous nanocatalysts

“…While this is true the majority of these employ a dehydrogenation pathway and although alcohol conversions and ketone selectivities are good (both typically >80 %) these methods require notoriously high temperatures of >300 °C. [11][12][13][14] Oxidation processes have commonly used peroxides due to the higher levels of ketone selectivity (>90%) and lower temperatures they can attain. However, despite the advantages, these generally require solvents, typically employ batch systems and often suffer from lower conversions (<50 %), not to mention the toxic/corrosive nature of the oxidant.…”

Tungsten-based catalysts for the oxidation of cyclohexanol: The effect of phase transfer catalysts

“…Several methods, such as dehydrogenation and catalytic oxidation, have been developed for this purpose [1][2][3][4][5]. Generally, the reported oxidation reactions involve stoichiometric quantities of inorganic oxidants, toxic or hazardous oxidizing agents [5].…”