Abstract The correlation between the physico-chemical properties of VOx/TiO2 catalysts and the selective catalytic oxidation of H2S was investigated. Among the types of commercial TiO2 tested, the best catalytic activity was exhibited by TiO2 (B), and the optimal vanadium content was 10 wt%. The VOx surface density range where maximum oxidation efficiency was achieved was about 2.69–18.09 VOx‧nm−2, where monomeric VOx and crystalline V2O5 were appropriately present in the VOx/TiO2 vanadium structure. This indicates that at maximum oxidation efficiency the VOx/TiO2 catalyst and the VOx surface density can be used to control the VOx structure on the catalyst surface. However, as the conversion of H2S into selective elemental sulfur causes sulfur to be deposited onto the VOx/TiO2 catalyst surface, the high initial reactivity and durability did not converge.

中文翻译：

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VOx表面密度和结构对用于H2S选择性氧化反应的VOx/TiO2催化剂的影响

摘要 研究了VOx/TiO2催化剂的理化性质与H2S选择性催化氧化的相关性。在测试的商业 TiO2 类型中，TiO2 (B) 表现出最好的催化活性，最佳钒含量为 10 wt%。达到最大氧化效率的 VOx 表面密度范围约为 2.69-18.09 VOx‧nm-2，其中单体 VOx 和结晶 V2O5 适当存在于 VOx/TiO2 钒结构中。这表明在最大氧化效率下，VOx/TiO2 催化剂和 VOx 表面密度可用于控制催化剂表面的 VOx 结构。然而，由于 H2S 转化为选择性元素硫导致硫沉积在 VOx/TiO2 催化剂表面，