一种以双极膜为隔膜的电化学还原CO2电解池及其应用
文献类型：专利
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| 作者 | 宋玉江; 李焕巧 |
| 发表日期 | 2015-04-22 |
| 专利国别 | CN |
| 专利号 | CN201210408760.7 |
| 专利类型 | 发明 |
| 权利人 | 中国科学院大连化学物理研究所 |
| 是否PCT专利 | 否 |
| 中文摘要 | The invention relates to an electrochemical reduction CO2 electrolytic tank using a bipolar membrane as a diaphragm and an application of the electrochemical reduction CO2 electrolytic tank. The electrolytic tank comprises a cathode electrolysis compartment, cathode liquor, an anode electrolysis compartment, anolyte and the bipolar membrane for dividing the cathode electrolysis compartment and the anode electrolysis compartment. The electrode materials of the cathode electrolysis compartment include Pb (Plumbum), In (Indium) and Cu (Copper) etc, and the cathode liquor is an alkaline aqueous solution; and the electrode materials of the anode electrolysis compartment include Pt (Platioum) and Pd (Palladium) etc, and the anolyte is an acidic aqueous solution containing iodate. The hydroxy radicals in the cathode electrolysis compartment and the protons in the anodic electrolysis compartment are diffused to the bipolar membrane to generate water so as to form a voltage drop, so that the working voltage in the electrolytic tank is reduced. Compared with an anodic reaction that water and the electricity are oxidized to generate oxygen, the iodide ions are oxidized to generate an iodine elementary substance with low potential, small overpotential and quick dynamic process, so that the working voltage in the electrolytic tank is further reduced. CO2 is electrically reduced in a cathode compartment so as to generate small molecular fuels, such as formate, methanel, and methane; and the iodide ions are electrically oxidized to generate the elementary substance iodine in an anode compartment. | 本发明涉及一种以双极膜为隔膜的电化学还原CO2电解池及其应用，该电解池包括阴极电解室、阴极电解液、阳极电解室、阳极电解液和分隔阴、阳极电解室的双极膜。阴极电解室的电极材料为Pb、In、Cu等，阴极电解液为碱性水溶液；阳极电解室的电极材料为Pt、Pd等，阳极电解液为碘盐的酸性水溶液。阴极电解室中的氢氧根和阳极电解室中的质子扩散至双极膜内生成水，形成一个电压降，降低电解槽的工作电压。与水电氧化生成氧气的阳极反应相比，碘离子氧化生成碘单质的电位低、过电位小、动力学过程快，可进一步降低电解槽的工作电压。二氧化碳在阴极室被电还原，生成甲酸盐、甲醇、甲烷等小分子燃料；碘离子在阳极室被电氧化生成单质碘。 |
| 学科主题 | 物理化学 |
| 公开日期 | 2015-04-22 |
| 授权日期 | 2015-04-22 |
| 申请日期 | 2012-10-24 |
| 语种 | 中文 |
| 专利申请号 | CN201210408760.7 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145030]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 中国科学院大连化学物理研究所 |
| 推荐引用方式 GB/T 7714 | 宋玉江,李焕巧. 一种以双极膜为隔膜的电化学还原CO2电解池及其应用, 一种以双极膜为隔膜的电化学还原CO2电解池及其应用, 一种以双极膜为隔膜的电化学还原CO2电解池及其应用, 一种以双极膜为隔膜的电化学还原CO2电解池及其应用. CN201210408760.7. 2015-04-22. |
入库方式： OAI收割
来源：大连化学物理研究所
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