甲酸
格式化
醋酸
原子发射光谱法
草酸盐
碳氢化合物
等离子体
氢
化学
分析化学(期刊)
光谱学
离子色谱法
无机化学
环境化学
有机化学
催化作用
感应耦合等离子体
物理
量子力学
作者
Sisi Yang,Bofan Zhao,Indu Aravind,Yu Wang,Boxin Zhang,Sizhe Weng,Zhi Cai,Ruoxi Li,Ali Zarei Baygi,Adam M. Smith,M.A. Gundersen,Stephen B. Cronin
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2021-10-18
卷期号:6 (11): 3924-3930
被引量:7
标识
DOI:10.1021/acsenergylett.1c01666
摘要
By discharging nanosecond high-voltage pulses in CO2-saturated water, we observe CO2 reduction to higher-order hydrocarbons, including acetic acid, formic acid, and oxalate. Here, the plasma emission spectra exhibit Swan bands, which correspond to C2 species, indicating that in addition to reducing CO2, C2-species are formed, which presents the possibility of converting a notorious greenhouse gas into liquid (i.e., dense) hydrocarbon fuels. In order to characterize various hydrocarbon products formed in this process, cryogenic NMR spectroscopy and liquid ion chromatography are performed ex situ. Here, we observe clear peaks corresponding to formic acid (CH2O2) and acetic acid (CH3COOH). We have also observed the presence of formate (HCO2–), acetate (C2H3O2–), and oxalate (C2O42–) using liquid ion chromatography. Plasma emission spectroscopy exhibits spectral signatures associated with atomic hydrogen and atomic oxygen due to the plasma discharge in water, which facilitate (and compete with) the CO2-to-hydrocarbon conversion.
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