Bifunctional application of sodium cobaltate as a catalyst and captor through CO oxidation and subsequent CO<sub>2</sub> chemisorption processes [electronic resource]

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 504.2 [Unassigned]

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy for Fossil Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015

Mô tả vật lý: Size: p. 2162-2170 : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 267788

 The potential bifunctional mechanism of sodium cobaltate (NaCoO<
 sub>
 2<
 /sub>
 ) in the catalysis of CO oxidation and subsequent CO<
 sub>
 2<
 /sub>
  chemisorption was systematically analysed. Different catalytic and gravimetric experiments were performed dynamically and isothermally at multiple temperatures. Initially, the CO oxidation process was evaluated using a catalytic reactor connected to a gas chromatograph. Once the production of CO<
 sub>
 2<
 /sub>
  was confirmed, its chemisorption capacity with NaCoO<
 sub>
 2<
 /sub>
  was studied gravimetrically. Catalytic and gravimetric analysis products were studied by XRD, FTIR and SEM to elucidate the double reaction mechanism. Sodium cobaltate exhibited interesting catalytic properties over a wide temperature range, although the NaCoO<
 sub>
 2<
 /sub>
  crystalline structure and chemical composition changed during the CO<
 sub>
 2<
 /sub>
  capture process. Furthermore, all the experiments were theoretically supported by first-principles density functional theory thermodynamic calculations. Finally, the calculated thermodynamic properties of the CO oxidation and CO<
 sub>
 2<
 /sub>
  capture reactions with NaCoO<
 sub>
 2<
 /sub>
  under different oxidation conditions were in good agreement with the experimental measurements.
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