在阴极室液体中鼓入CO2气体流速控制为100 mLmin。使用蠕动泵在出气口处以相同的流速抽出反应后的气体实时在线通入气相色谱仪进气口检测CO2还原后的气相产物。在本论文中其气相产物主要为H2、CO、CH4。色谱仪配备有两个检测器热导检测器TCD用来测定H2火焰电离检测器FID用来检测CO与CH4。电还原的液体产物溶解在氚代溶剂DMSO-d6中以003 TMS作为内标通过核磁共振NMR波谱仪中的1

In the cathode chamber, CO2 gas is introduced at a controlled flow rate of 100 mL/min. A peristaltic pump is used to extract the resulting gas at the same flow rate from the outlet, which is then continuously fed into the inlet of a gas chromatograph for real-time online analysis. The gas chromatograph is equipped with two detectors: a thermal conductivity detector (TCD) for measuring H2 and a flame ionization detector (FID) for detecting CO and CH4. The liquid products of the electroreduction are dissolved in deuterated dimethyl sulfoxide (DMSO-d6) with 0.03% tetramethylsilane (TMS) as an internal standard, and quantitatively analyzed using 1H-NMR spectroscopy on a nuclear magnetic resonance (NMR) spectrometer