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作者以大气中低浓度的一氧化氮(NO)定量地氧化成二氧化氮(NO_2)为目的,试验了用金属铅圆筒进行阳极氧化,以在铅表面生成的二氧化铅(PbO_2)作为氧化剂来氧化NO。制备PbO_2圆筒采用如下电解装置和操作。[装置] 阳极:圆筒形铅电极,内径30mm,长度300mm。阴极:白金棒状电极。隔板:瓷圆简,内径20mm,长度320mm。电解槽:玻璃量筒,2l。电源:硅整流器直流电源,最高电压20V,最高电流5A。[操作] 在电解槽中加入5%硫酸溶液作为电解液,放入电极,给予直流电5V、3A,电解30小时,电流密
With the objective of quantitatively oxidizing low concentration of nitric oxide (NO) in the atmosphere to nitrogen dioxide (NO 2), the authors conducted anodic oxidation with metal lead cylinders to produce lead dioxide (PbO 2) on the lead surface as Oxidant to oxidize NO. The PbO 2 cylinder was prepared using the following electrolysis apparatus and operation. [Device] Anode: Cylindrical lead electrode, inner diameter 30 mm, length 300 mm. Cathode: Platinum rod electrode. Separator: Porcelain round Jane, diameter 20mm, length 320mm. Electrolytic cell: glass cylinder, 2l. Power: DC rectifier DC power supply, the maximum voltage of 20V, the maximum current 5A. [Operation] A 5% sulfuric acid solution was added to the electrolytic cell as an electrolyte, and the electrode was charged with DC 5V and 3A, and electrolyzed for 30 hours. The current density