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| As the kinetic data are fitted well by pseudo-second-order model, it can be said the adsorption mechanism is due to chemisorption. However the value of enthalpy (¦¤H) (table 3£¬¦¤H=-2.3KJ.mol-1) indicates that it is due to physisorption? Would the author please explain it? |
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kanavaro11(½ð±Ò+2): »ý¼« 2012-01-06 08:26:33
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kanavaro11(½ð±Ò+2): »ý¼« 2012-01-06 08:26:33
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¿´µ½ÁËÕâÑùÒ»¾ä»°¡°***follows the pseudo-second-order kinetic model, ¡¾which relies on the assumption that chemisorption may be the rate-limiting step¡¿¡± ËùÒÔ£¬·ûºÏpseudo-second-order kinetic model¾ÍÒ»¶¨ÊÇ»¯Ñ§Îü¸½Ã´£¿£¨ÎÒÒ²²»ÖªµÀÈ·Çд𰸣©¡£ÖÁÓÚpseudo-second-order kinetic model£¬Çë²Î¿¼¡¶Pseudo-second order model for sorption processes¡·£¬¿ÉÒÔ´ÓÕâÆªÎÄÕÂÖÐÕÒ¾ßÌåµÄ´ð°¸£¬¿´ÓÐûÓÐÕâÑùÒ»¸ö¶¨ÂÛ£º·ûºÏpseudo-second-order kinetic model¾ÍÒ»¶¨ÊÇ»¯Ñ§Îü¸½¡£ ´ËÍ⣬Îü¸½Õâ¶«Î÷£¬»¯Ñ§Îü¸½ºÍÎïÀíÎü¸½´ó¶àÊýʱºò¶¼ÊÇͬʱ´æÔڵΡ£ ÓÞ¼û£¬½ö¹©²Î¿¼£¡ |

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