Promoting effect of Zn in high-loading Zn/Ni-SiO<sub>2</sub> catalysts for selective hydrogen evolution from methylcyclohexane
Maria V. Alekseeva, Yuliya K. Gulyaeva, О. А. Булавченко, Аndrey А. Saraev, Anna M. Kremneva, Sergey A. Stepanenko, Anton P. Koskin, В. В. Каичев, V. А. Yakovlev
Abstract
catalysts toward toluene formation increased markedly with a decrease in the Ni : Zn mass ratio, achieving 97% at 350 °C over the sample with Ni : Zn = 80 : 20. This is attributed to the promoting geometric and electronic effects arising from the formation of bimetallic Ni-Zn solid solutions. Moreover, a deeper reduction of zinc and a more efficient formation of solid bimetallic solutions are observed after the catalytic tests.
Topics & Concepts
MethylcyclohexaneDehydrogenationCatalysisBimetallic stripNickelZincX-ray photoelectron spectroscopyInorganic chemistryChemistryTolueneTemperature-programmed reductionHydrogen spilloverMaterials scienceChemical engineeringOrganic chemistryEngineeringCatalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesCatalysis and Oxidation Reactions