CO gas production by molten salt electrolysis from CO2 gas

Fumiya Matsuura, Takafumi Wakamatsu, Shungo Natsui, Tatsuya Kikuchi, Ryosuke O. Suzuki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

CO2 gas is decomposed to CO and C by the molten salt electrolysis using CaCl2-CaO and solid state electrolyte, zirconia, as the anode. Partially CO2 gas dissolves to form CO32- and it is electrochemically decomposed to carbon. The other portion of CO2 gas bubbles reacts with metallic Caelectrochemically deposited near the cathode, and forms C or CO gas. By increasing the flow rate of CO2 gas to the reactor, a high concentration of CO gas is generated. By increasing the concentration of CO2 gas in the initial gas, a large amount of CO gas was produced in the exhaust gas, and its rate approached to 3.32×10-8 m3/s in our experimental setup. These experimental evidences reflect the electrochemical decomposition of CO3 2- in the molten salt.

Original languageEnglish
Pages (from-to)404-408
Number of pages5
JournalIsij International
Volume55
Issue number2
DOIs
Publication statusPublished - 2015

Keywords

  • Carbon dioxide
  • Carbon monoxide
  • Molten salt electrolysis
  • Zirconia

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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