A Membrane Reactor with Microchannels for Carbon Dioxide Reduction in Extraterrestrial Space
A Membrane Reactor with Microchannels for Carbon Dioxide Reduction in Extraterrestrial Space
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DOI：
10.3390/catal12010003
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发表时间：
2021-12
期刊：
影响因子：
3.9
通讯作者：
Deqiang Feng;Wenjun Jiang;Ce Zhang;Long Li;Botao Hu;Jian Song;Wei‐Jing Yao
中科院分区：
文献类型：
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作者：
Deqiang Feng;Wenjun Jiang;Ce Zhang;Long Li;Botao Hu;Jian Song;Wei‐Jing Yao
在空间探索过程中，长期连续供氧至关重要。考虑到成本和可行性，原位资源利用(ISRU)可能是一种很有前途的解决方案。二氧化碳转化为氧气是ISRU的一个关键点。此外，火星大气中丰富的二氧化碳资源的利用是载人深空探测领域的重要课题。Sabatier反应、Bosch反应和固体氧化物电解(SOE)是众所周知的二氧化碳还原技术。然而，这些技术都需要很大的能源消耗。在本文中，我们设计了一种基于微流控的常温电化学膜反应器，用于减少外太空中的二氧化碳。在该体系中，H2O在阳极上被氧化为O2，而CO2在阴极上被还原为C2H4。C2H4的最高法拉第效率(FE)为72.7%，C2H4的单程碳效率(SPCE-C2H4)为4.64%。此外，还采用了微流控技术来克服微重力环境的影响。这项研究可能为太空探索过程中的长期持续供氧提供解决方案。
Long-term continuous oxygen supply is of vital importance during the process of space exploration. Considering the cost and feasibility, in situ resource utilization (ISRU) may be a promising solution. The conversion of CO2 to O2 is a key point for ISRU. In addition, the utilization of the abundant CO2 resources in the atmosphere of Mars is an important topic in the field of manned deep space exploration. The Sabatier reaction, Bosch reaction, and solid oxide electrolysis (SOE) are well-known techniques for the reduction of CO2. However, all the above techniques need great energy consumption. In this article, we designed an electrochemical membrane reactor at room temperature based on microfluidic control for the reduction of CO2 in extraterrestrial space. In this system, H2O was oxidized to O2 on the anode, while CO2 was reduced to C2H4 on the cathode. The highest Faraday efficiency (FE) for C2H4 was 72.7%, with a single-pass carbon efficiency toward C2H4 (SPCE-C2H4) of 4.64%. In addition, a microfluidic control technique was adopted to overcome the influence of the microgravity environment. The study may provide a solution for the long-term continuous oxygen supply during the process of space exploration.