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Adsorption and catalytic conversion of thiol vapors by activated carbon and manganese dioxide
Abstract Activated carbon and supported MnO2 were evaluated as adsorbents for removing n-butanethiol and methanethiol from air and nitrogen atmospheres passing through a fixed bed reactor at 27°C. Both adsorbents are effective in removing thiols which are oxidized to their corresponding disulfides. However, whereas activated carbon effectively retains disulfide by adsorption with high capacity, essentially quantitative liberation of disulfide vapor takes place from supported MnO2 beds. Thiol removal efficiency by activated carbon is superior to that of MnO2 and does not depend on the presence of oxygen. Oxidation of thiols by MnO2, however, is a catalytic process utilizing atmospheric oxygen. It is concluded that activated carbon is suitable for thiol removal in air pollution control operations but that supported MnO2 is not.
Adsorption and catalytic conversion of thiol vapors by activated carbon and manganese dioxide
Abstract Activated carbon and supported MnO2 were evaluated as adsorbents for removing n-butanethiol and methanethiol from air and nitrogen atmospheres passing through a fixed bed reactor at 27°C. Both adsorbents are effective in removing thiols which are oxidized to their corresponding disulfides. However, whereas activated carbon effectively retains disulfide by adsorption with high capacity, essentially quantitative liberation of disulfide vapor takes place from supported MnO2 beds. Thiol removal efficiency by activated carbon is superior to that of MnO2 and does not depend on the presence of oxygen. Oxidation of thiols by MnO2, however, is a catalytic process utilizing atmospheric oxygen. It is concluded that activated carbon is suitable for thiol removal in air pollution control operations but that supported MnO2 is not.
Adsorption and catalytic conversion of thiol vapors by activated carbon and manganese dioxide
Miguel, A.H. (author) / Natusch, D.F.S. (author) / Tanner, R.L. (author) / Hudson, J.L. (author)
Atmospheric Environment ; 10 ; 145-150
1975-06-27
6 pages
Article (Journal)
Electronic Resource
English
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