دورية أكاديمية
New Route of Acetylene Synthesis via Electrochemical Formation of Metal Carbides from CO 2 in Chloride Melts
| العنوان: | New Route of Acetylene Synthesis via Electrochemical Formation of Metal Carbides from CO 2 in Chloride Melts |
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| المؤلفون: | Yuta Suzuki, Seiya Tanaka, Takashi Watanabe, Tomohiro Isogai, Akiyoshi Yamauchi, Yosuke Kishikawa, Takuya Goto |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | Microbiology, Physiology, Biotechnology, Ecology, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, temperature aqueous systems, quantitative gas analysis, electrolytic system suitable, produce acetylene utilizing, electrodeposited metal carbides, 2 , high current efficiency, metal carbides, current efficiency, − 200, unique process, two types, synthesizing materials, proposed process, novel route, new route, key role, glassy carbon, galvanostatic electrolysis, forming li, electrochemical measurements, 823 k |
| الوصف: | Electrochemical conversion of CO 2 in high-temperature molten salts provides a unique process for synthesizing materials that cannot be obtained in low-temperature aqueous systems. In this study, we propose a novel route to produce acetylene utilizing the electrochemical reduction of CO 2 in chloride melts. Acetylene is generated by the reaction between water and metal carbides, which are formed by the reduction of CO 2 and cations in the melts. We demonstrated the proposed process by electrochemical measurements and quantitative gas analysis. To investigate the electrolytic system suitable for forming Li 2 C 2 and CaC 2 as the metal carbides at high current efficiency, two types of melts: LiCl–KCl–CaCl 2 –CaO melt at 723 K and NaCl–KCl–CaCl 2 –CaO melt at 823 K, and two types of electrodes: metallic electrodes (Fe, SUS304, SUS316, Mo, Ta and Ti) and carbon electrodes (graphite, glassy carbon, and highly oriented pyrolytic graphite) were used. It was found that acetylene was obtained with a current efficiency of 68% by galvanostatic electrolysis at −200 mA cm –2 on a Fe electrode in the NaCl–KCl–CaCl 2 –CaO melt mixed with 7.0 mol % CaC 2 under CO 2 atmosphere. The CaC 2 played a key role in preventing the dissolution of electrodeposited metal carbides into the melts. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | https://figshare.com/articles/journal_contribution/New_Route_of_Acetylene_Synthesis_via_Electrochemical_Formation_of_Metal_Carbides_from_CO_sub_2_sub_in_Chloride_Melts/25062549Test |
| DOI: | 10.1021/acssuschemeng.3c08139.s001 |
| الإتاحة: | https://doi.org/10.1021/acssuschemeng.3c08139.s001Test https://figshare.com/articles/journal_contribution/New_Route_of_Acetylene_Synthesis_via_Electrochemical_Formation_of_Metal_Carbides_from_CO_sub_2_sub_in_Chloride_Melts/25062549Test |
| حقوق: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.E4CF0C20 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acssuschemeng.3c08139.s001 |
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