2016/11/01 by Sang‐Jun Han, Jung‐Ho Wee · 1 citation
Engineering · Environmental Science · #Carbon Dioxide Capture Technologies #Membrane Separation and Gas Transport #CO2 Sequestration and Geologic Interactions
paper · doi:10.1021/acs.iecr.6b03250
openalex publication_date 2016/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/16
A CO 2 -fixing material, sodium ethyl carbonate (SEC), is systematically synthesized via the carbonation of NaOH-dissolved ethanol. The synthesis is conducted by injecting 33.3 vol % CO 2 gas into the solution with a concentration of 1–4 g of NaOH/0.5 L of ethanol. The SEC composition is 97.3 wt %, and NaHCO 3 is present in only minor amounts. When the synthesized SEC is dissolved in excess water, it is converted to a NaHCO 3 precipitate, which can still fix CO 2, and ethanol is reproduced in aqueous solution. Therefore, the SEC synthesis and ethanol regeneration process might be an effective means of carbon capture storage/utilization. In addition, SEC thermally decomposes to Na 2 CO 3, CO 2, and diethyl ether at 137 °C in an N 2 atmosphere and slowly decomposes to Na 2 CO 3 ·3NaHCO 3 with a relatively small release of ethanol and 20% of CO 2 fixed in SEC under atmospheric conditions. Furthermore, the main X-ray diffraction peaks of SEC are herein reported.