Cr3+ electron spin resonance linewidth in ZnO—ZnCr2O4—(Pd) solid mixtures
Abstract
The e.s.r. signal generated by a solid catalyst, based on a ZnO, ZnCr2O4 and Pd mixture, has been studied as a function of the concentration of the components. The linewidth broadening and narrowing of the signal is strongly dependent on both the Zn/Cr ratio and the Pd concentration and is connected with a change in the relative distance between the Cr3+ ions.