| 摘要 |
<p>The catalysts supports, particularly adapted to abrasion-proof shell catalysts, present a surface provided with a porous layer according to physical coating processes. The layer is essentially comprised of individual structures configured as elevations, uprights and/or rods. The layer comprises oxides, nitrides and/or carbides with a high melting point of at least a transition metal, boron, aluminium and/or silicon, or mixtures of those compounds.</p> |
