Conversion of Environmental Pollutants to Nontoxic Compounds or Useful Raw Materials Using a New Electrochemical Hydrogenation System

在本研究中，我们利用我们开发的连续加氢系统研究了环境污染物转化为无毒化合物或有用原料的新工艺，这些污染物还没有找到可靠的处理方法。主要研究结果如下：1.利用我们的体系成功地将具有温室效应的NO转化为无毒的N^2。在Pd黑/Pd薄片上定量生成N^2。利用该系统成功地将造成水污染的硝酸盐转化为工业重要原料NH_8。在高电流效率下，在Ni/Pd黑/Pd薄板上选择性地生成了NH8。我们利用我们的系统成功地实现了紫红色偶氮染料的脱色。在Pt/Pd黑/Pd薄膜上，脱色速度大大加快。我们成功地将对氯甲苯作为芳香族卤素化合物的模型，利用我们的系统将其转化为甲苯和盐酸作为重要的工业原料。我们成功地通过配位化阳离子或阴离子交换膜的一侧来减少Pd的总量。用钯离子交换膜在高电流效率下将苯乙烯加氢为乙苯。

In the present study, we investigated new conversion processes of environmental pollutants, whose reliable treatment has never been found yet, to nontoxic compounds or useful raw materials using the successive hydrogenation system developed by us. The results are summarized as follows ;1. We succeeded the conversion of NO having green house effect to N^2 as a nontoxic product using our system. N^2 was quantitatively produced on a Pd black/Pd sheet.2. We succeeded the conversion of nitrate causing water pollution to NH_8 as an industrially important raw material using our system. NH_8 was selectively produced on a Ni/Pd black/Pd sheet at high current efficiency.3. We succeeded the decoloration of amaranth as an azo dye using our system. The decoloration rate was greatly accelerated on a Pt/Pd black/Pd sheet.4. We succeeded the conversion of p-chlorotoluene as a model of aromatic halogen compounds, whose reliable treatment has never been found yet, to toluene and hydrochloric acid as industrially important raw materials using our system.5. We succeeded to reduce the total amount of Pd by palladizing a side of a cation or anion exchange membrane. Styrene was hydrogenated to ethylbenzene at high current efficiency using the palladized ion exchange membranes.