氢气中耐微量氯的脱氧催化剂的研制

Study on the chlorine-resistant deoxidizing catalyst in hydrogen atmosphere

在含氯气氛下,考察了载体、助剂和还原方法对耐微量氯的富氢气氛中脱氧剂性能的影响。结果表明,以TiO2为载体,贵金属Pt为活性组分,添加助剂C和M,采用水合肼还原后,制备的耐氯脱氧催化剂具有良好的脱氧活性和稳定性。与新鲜催化剂相比,催化剂反应700 h后,物理性能和反应活性变化不大。在不提高贵金属Pt含量的前提下,助剂C和M的添加提高了催化剂的反应活性,降低了成本。

The effects of carriers,promoters and reductants on the performance of deoxidizer against chlorine poisoning in hydrogen-rich atmosphere were investigated.The results showed that the catalyst with TiO2 as the carrier,precious metal Pt as active component,non-precious C and M as promoters and reduced by hydrazine hydrate had good deoxidization activity and stability in the hydrogen stream containing chlorine.Compared with the fresh catalyst,the physical properties and reactivity of the catalyst did not change significantly after 700 h reaction.Without increasing the content of precious metal Pt,the addition of promoters C and M could improve the reactivity of the catalyst and reduce the cost.