A mechanistic explanation for the SO2 oxidation rate data of a Cs/V catalyst at high pressures and conversions

Vanadia?silica and vanadia?cesium?silica catalysts for oxidation of SO2

“…Furthermore, increasing the atomic number of the alkali metal has a beneficial effect in the promotion of the catalyst [18]. In particular, when using Cs as a promoter, it has been shown based on kinetic data that the optimal Cs:V ratio is 3-3.5 [49,50]. The present work demonstrates that after promotion, the samples behaved indeed as usual alkali-promoted supported molten salt catalysts.…”