气态二价汞金属催化还原的研究

Study on Catalytic Reduction of Gaseous Divalent Mercury

原子吸收光谱技术基于Hg原子蒸气(Hg^0)对253.7nm的紫外光的选择性强吸收作用实现Hg含量的测定,所以,保证样品中所有形态的Hg转化为Hg^0,是获得Hg含量准确测量的前提条件之一。之前的工作主要基于烟气中没有任何还原性气体和氧化性气体的理想情况进行分析。在前期工作的基础上运用HSC热化学模拟软件中的平衡相计算模块对过渡周期中的Zn、Cd、Y等3种金属元素对气态Hg^(2+)的还原效果进行了分析。

Atomic Absorption Spectrometry(Hg)is used to determine the Hg content of 253.7 nm ultraviolet light.Therefore,it is necessary to ensure that the Hg content of all the samples in the sample is Hg0,which is the accurate measurement of the Hg content.One of the prerequisites.Previous work was based on the analysis of the ideal situation in the flue gas without any reducing gas and oxidizing gases.Based on the preliminary work,the reduction effect of gaseous Hg2+ in three kinds of metal elements such as Zn,Cd and Y in the transition period was analyzed by using the equilibrium phase calculation module in HSC thermochemical simulation software.