Influence of Domain Size and Support Composition on the Reducibility of SiO₂ and TiO₂ Supported Tungsten Oxide Clusters.

ABSTRACT: Supported tungsten oxides are widely used in a variety of catalytic reactions. Depending on the support, the cluster size, oxidation state, reducibility and speciation of the tungsten oxides can widely differ. When promoted with a platinum group metal, the resulting spillover of hydrogen may facilitate the reduction of supported tungsten oxide species, depending on the support. High resolution scanning transmission electron microscopy imaging showed nanometer scale WO _x clusters were synthesized on SiO₂ whereas highly dispersed species were formed on TiO₂. Results from H₂-temperature-programmed reduction showed the presence of Pd lowered the initial reduction temperature of SiO₂-supported WO _x species but inter

SUBMITTER: Mamedov K 

PROVIDER: S-EPMC11345822 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature