CATALYSTS
for optimal performance
VK-WL
![](https://www.topsoe.com/hubfs/IMAGES/IMAGES%20-%20PRODUCTS/Catalysts/Daisy_yellow_angled.jpg)
Relevant for
Safety data sheet
Request Safety DataVK-WL is a cesium-promoted catalyst designed for continuous operation down to 370°C/700°F in lean SO2+SO3 gasses (less than approximately 2 mole%). At these conditions, VK-WL offers unmatched high activity throughout the entire operating temperature range. The very high activity provides the opportunity to operate the WSA-DC plant at state-of-the-art conversion efficiencies of more than 99.95% with only four catalyst passes.