nkhani

Chemistry of H2S Mitigation. Timagwiritsa ntchito zinthu zitatu zofunika za molekyulu ya H2S panthawi yochepetsera H2S.

H2S ndi mpweya wa acidic ndipo idza mchere wambiri wa amines ku aminium hydrosulphide. Zomwe zimachitika zimakhala zosinthika ndipo zimapanga maziko a gawo lobwezeretsanso amine; mcherewo umasiyanitsidwa kubwerera ku H2S ndi amine yaulere ndi kutentha. Izi zimachotsanso CO2 chifukwa ndi mpweya wa acidic.

H2S ndi yochepetsera motero imatha kukhala oxidized mosavuta. The valence dziko la sulfure ndi -2 mu H2S ndipo akhoza oxidized kuti 0, elemental sulfure (mwachitsanzo zamchere sodium nitrite kapena hydrogen peroxide) kapena +6, sulphate ndi chlorine dioxide, hypohalites etc.

H2S ndi nucleophile yamphamvu chifukwa cha atomu ya sulfure yomwe ndi maziko ofewa a Lewis. Ma electron ali mu chipolopolo cha ma elekitironi 3, kupitirira kuchokera pamphuno, othamanga kwambiri komanso osasunthika mosavuta. Chitsanzo chabwino kwambiri cha izi ndi chakuti H2O ndi madzi okhala ndi malo otentha a 100 C pamene H2S, molekyulu yolemera kwambiri, ndi mpweya wokhala ndi malo otentha -60 C. The hard Lewis Basic katundu wa atomu ya okosijeni amapanga haidrojeni yamphamvu kwambiri. ma bond, kuposa H2S, chifukwa chake kusiyana kwakukulu kwa mfundo yowira. Mphamvu ya nucleophilic ya atomu ya sulfure imagwiritsidwa ntchito pochita ndi triazine, formaldehyde ndi hemiformal kapena formaldehyde releasers, acrolein ndi glyoxal.