由于市售的氮气纯度往往很低,为了获得精制氮气,我们首先从制备活性铜开始,然后在300℃吋,通入待精制的氮气,经过半小时后,进行色谱分析,未出现O_2峰,达到了精制目的。一、原理 Because commercially available nitrogen often has a very low purity, in order to obtain refined nitrogen, we first start with the preparation of activated copper and then pass through the nitrogen to be purified at 300 ° C. After half an hour, chromatographic analysis shows that there is no O 2 peak, Achieve the purpose of refining. First, the principle