Ruthenium/cobalt binary oxides supported on hollow alumina microspheres as highly efficient catalyst for vinyl chloride oxidation
Source abstract
Abstract
Alumina hollow microspheres (AlO-hms) were synthesized and used to support metal oxide and binary metal oxide particles to prepare three catalysts, designated as RuO/AlO-hms, CoO/AlO-hms and RuCoO/AlO-hms. Their catalytic properties in vinyl chloride oxidation were investigated and found to follow this order: RuCoO/AlO-hms > RuO/AlO-hms > CoO/AlO-hms. In comparison with a commercial AlO support, the AlO-hms provide a higher specific surface area and unique hollow spherical morphology, benefiting for uniform distribution of catalyst particles. It was also found that the strong metal-support interaction between metal nanoparticles and AlO-hms has significant effects on the low-temperature reducibility, the surface oxygen abundance and mobility, giving rise to different oxidation activities. The AlO-hms supported metal catalysts remained relatively high catalytic activity after consecutive catalytic runs and high-temperature annealing. The anti-sintering ability enhancement of metal particles was attributed to the stabilization and metal-support interaction effects with AlO-hms.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Nanomaterials for catalytic reactions · Layered Double Hydroxides Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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