Signals in Supported Catalysts Cation Dimers and Redox Studies

Metal-related Signals in Supported Catalysts Cation Dimers and Redox Studies 

Ni0x/Ce02 catalysts no cation pairs were detected [74] only well-resolved signals of Ni ions in the bulk (g =2,018, gi=2.358) and broad signals (g=2.47-2.20, T-dependent AHpp 1000 Gauss) due to antiferromagnetic NiO domains were found. 

NMR studies devoted to ceria-containing systems are scarce, since there is no Ce isotope with magnetic nucleus and the only suitable oxygen isotope, 0, has very low natural abondance. Therefore, except for a few O-based results the existing studies concentrate either on other metal components incorporated into the catalyst or on adsorbed species containing NMR-active nuclei. 

---