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考察了有还原气体Ｈ＿２存在时，在反应温度１８０℃，常压＝空速＝１２００ｈ￣（－１），Ｏ＿２与Ｈ＿２Ｓ的ｍｏｌ比为１：１．２的反应条件下，用Ａｌ＿２Ｏ＿３为载体，以金属Ｖ，Ｂｉ为活性组分的催化剂，其选择氧化脱Ｈ＿２Ｓ的效果。在Ｖ，Ｂｉ催化剂上添加助剂Ｌａ，Ｍｇ后制成改性的催化剂，考察其１０００ｈ长周期反应脱Ｈ＿２Ｓ的效果。实验表明，改性的催化剂具有活性高、选择性好的特点，连续反应１０００ｈ后，其脱除Ｈ＿２Ｓ的平均转化率达到０．９５，选择性为０．９０，而且活性没有明显的下降趋势。因此，这是一种抗还原能力强的选择氧化脱除气态Ｈ＿２Ｓ的催化剂。
The effect of Al 2 O 3 as carrier was studied under the reaction conditions of reaction temperature of 180 ℃, atmospheric pressure = space velocity = 1200 h ~ (-1), molar ratio of O 2 to H 2 S of 1: 1.2, The metal V, Bi as the active component of the catalyst, the selective oxidation of H_2S effect. Add additives La and Mg on the V and Bi catalysts to make the modified catalyst, and investigate the effect of H_2S removal over a long period of 1000h. The experiments show that the modified catalyst has the characteristics of high activity and good selectivity. The average conversion rate of H 2 S removal reaches 0.95 after continuous reaction for 1000 h, the selectivity is 0.90, and the activity has no obvious downward trend. Therefore, this is a strong anti-reduction ability of the selective oxidation of gaseous H_2S catalyst.