| 摘要 |
<p>Vanadium pentoxide catalysts consisting of solid or hollow cylindrical or prismatic particles whose longitudinal cylindrical or flat surfaces are furnished with grooves (1) whose spacing, depth and width are such that, if compared to a non-grooved cylinder or prism of identical height and external dimension, then the gas/solid surface is increased while still maintaining an adequate mechanical strength, and use thereof.</p> |
