Robust Immobilized Amine CO₂ Sorbent Pellets Utilizing a Poly(Chloroprene) Polymer Binder and Fly Ash Additive [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 661 Technology of industrial chemicals
• 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, 2016
• Mô tả vật lý: Size: p. 228-233 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 267781
• Chủ đề: 1. 01 coal, lignite, and peat; 2. 37 inorganic, organic, physical, and analytical chemistry; 3. Amines; 4. Carbon dioxide capture; 5. Cycle stability

Tóm tắt

 Pelletization of ca. 50 wt % amine/silica carbon dioxide sorbents was achieved with the novel combination of fly ash (FA) as a strength additive and hydrophobic poly(chloroprene) (PC) as a binder. The PC content and overall synthesis procedure of these materials were optimized to produce pellets, labeled as FA/E100-S_(20/80)_12.2, with the highest ball-mill attrition resistance (<
 0.5 wt % by fines, 24 h) and maximum CO<
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  capture capacity of 1.78 mmol CO<
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  g<
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 -1<
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 . The strength of the pellets was attributed to hydrogen-bonding of the relatively homogeneous PC network with the interlocked FA and BIAS particles (DRIFTS, SEM-EDS). The low degradation of 3?4 % in the pellet's CO<
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  capture capacity under both dry TGA (7.5 h) and practical fixed-bed (6.5 h dry
  4.5 h humid,?5 vol % H<
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 O) CO<
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  adsorption?desorption conditions highlights the pellet's excellent cyclic stability. These robust pellet characteristics make PC/FA/sorbent materials promising for commercial scale, point-source CO<
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  capture.