Destruction of CS₂ in the modified Claus process plays a vital role in achieving high sulfur recovery (>99.9%). Although it has lower catalytic activity for CS₂ hydrolysis than titania, alumina has been widely used in Claus plants for conversion of sulfur species into elemental sulfur, because it is less expensive, highly active for the Claus reaction and mechanically robust. This research explores improving CS₂ hydrolysis on Claus alumina catalyst by modification with 1 wt.% of either CuO, TiO₂, Fe₂O₃, Co₂O₃, Sc₂O₃ or Na₂O. These modified catalysts were tested using the first catalytic convertor conditions. While catalyst impregnation with most of the metals described above leads to minor improved CS₂ conversion, the deposition of both Cu²⁺ and Ti⁴⁺ stood out for resulting 22.6 and 33.7% higher activity, respectively. Results suggest that the improved catalytic activity can be explained by reduced hydrophilicity (increased hydroxyl dispersion) and somewhat increased basicity on the surface of the catalysts.

在改进的克劳斯工艺中，CS _2的破坏在实现高硫回收率（> 99.9％）方面起着至关重要的作用。尽管氧化铝对CS _2的催化活性低于二氧化钛，但由于它价格便宜，对克劳斯反应具有高活性和机械坚固性，因此氧化铝已在克劳斯工厂中广泛用于将硫物质转化为元素硫。这项研究探索通过用1 wt。％的CuO，TiO ₂，Fe ₂ O ₃，Co ₂ O ₃，Sc ₂ O ₃或Na ₂改性来改善在克劳斯氧化铝催化剂上的CS ₂水解。O.使用第一催化转化器条件测试这些改性的催化剂。尽管用上述大多数金属浸渍催化剂导致CS ₂转化率略有提高，但Cu ²⁺和Ti ⁴⁺的沉积却分别引起了22.6和33.7％的更高活性。结果表明，可以通过降低的亲水性（增加的羟基分散度）和在催化剂表面上增加的碱性来解释改善的催化活性。