Coal ash as an absorbent to remove SO2, and its activity change in NO?NH3 reaction |
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| Authors: | F Nozaki O Watanabe and T Sodesawa |
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| Institution: | (1) Department of Industrial Chemistry, Faculty of Engineering, Chiba University, 260 Chiba, Japan |
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| Abstract: | After being activated with NaOH aqueous solution, coal ash showed a maximal sorption capacity of about 2 cm3 SO2/g ash. Catalytic activity of coal ash for the NO–NH3 reaction was gradually depressed by the presence of a small amount of SO2. SEM photographs and X-ray diffractograms of the ash samples gave additional information about the physico-chemical structure of the ashes.
          ,           NaOH,       — 2 SO2/ .     SO2.      - - .
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