Industrially proven catalysts

Topsoe's non-caesium vanadium catalysts for sulphuric acid production are proven in more than 500 installations worldwide .

VK38

The VK38 formulation provides excellent activity over a wide range of operating conditions. VK38 is the only catalyst on the market that can be used effectively in all beds of any SO2 converter.

For continuous operation VK38 offers a broad temperature range of 400-630°C (750-1170°F). VK38 is designed to initiate the reaction at a temperature as low as 360°C (680°F), ensuring a smooth plant start-up, while minimising pre-heat time due to its superior catalyst activity.

VK48

VK48 is a high-vanadium catalyst. An optimised ratio of the alkali-metal promoters enables an increased vanadium content in VK48, resulting in a considerably enhanced activity.

The catalyst composition is specifically formulated for lower pass service, particularly where the process gas contains large amounts of SO3.