Tuning the catalytic performance of a Cu supported silica modified γ-Al₂O₃nanocatalystviacobalt-doping for A³-coupling

Abstract

Tuning the catalytic activity and selectivity of a heterogeneous transition nano-metal catalyst by the controlled incorporation of a foreign entity (dopant) into its structure is of paramount importance although a...

Efficient CO Oxidative Coupling to Dimethyl Oxalate over the Pd/Al2O3 Nanocatalyst with the Assistance of Co Doping

“…Another two intense shake‐up satellite peaks at 784.2 eV and 800.8 eV were detected. Compared to the results reported in the literature, the binding energy values for Co in this work are lower about 1.5 eV than the desirable binding energy for Co (II) (Co 2p 3/2 of 780.6 eV) [11] . However, the interval of binding energy between the Co 2p 3/2 and Co 2p 1/2 peaks was observed to be about 16.0 eV, and thus it can be speculated that the chemical state of Co is positive bivalent.…”

“…Compared to the results reported in the literature, the binding energy values for Co in this work are lower about 1.5 eV than the desirable binding energy for Co (II) (Co 2p 3/2 of 780.6 eV). [11] However, the interval of binding energy between the Co 2p 3/2 and Co 2p 1/2 peaks was observed to be about 16.0 eV, and thus it can be speculated that the chemical state of Co is positive bivalent. Notably, the binding energy of the strong satellite was about 5.1 eV higher than that of Co 2p 3/2 , indicating that the presence of Co (II) species over the catalyst surface.…”