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Originally posted by freelover at 2009-11-9 17:09:

ÎÒÃ÷°×ÄãµÄÒâ˼°¡£¬²»¹ýÎÒÓ¡ÏóÖÐûÓмû¹ý»¯ºÏÎïµÄµç¸ºÐÔÊý¾Ý¡£ÓÐЩÎÄÏ×Ò²ÊǸù¾ÝÔ­×ӵĵ縺ÐÔÀ´¼ÆËãµÄ£¬±ÈÈçSandersonµç¸ºÐÔ±ê¶È£¬¿ÉÒÔ¸ù¾ÝÔªËØµÄµç¸ºÐԵļ¸ºÎƽ¾ùÀ´ºâË㻯ºÏÎïµÄµç¸ºÐÔ¡£¶øÇÒʵ¼ÊÉϲ»Í¬±ê¶ÈµÄµç ...

лл£¬ÎÒÊÇ¿´ÎÄÏ×ÉϽ²µÃ£¬×÷ÕßÌáµ½ÁËÒ»¸ö¡°Sanderson¡¯s electronegativity ¡±£¬ËùÒÔÏëÖªµÀÕâ¸öԭʼÊý¾ÝÔÚÄÄÀ˳±ã²é²éÑõ»¯ÂÁµÄµç¸ºÐÔ£¬¾ÍÊÇÕâ¸öÄ¿µÄ£¬ºÇºÇ¡£ÄãÌáµ½µÄSandersonµç¸ºÐÔ±ê¶È¾ÍÊÇÎÒÒªÕÒµÄÊý¾Ý¡£

Sanderson¡¯s electronegativity of compounds was used as a measure of the electronic nature: 2.64 (TiO2), 2.38 (CeO2), 2.28 (Sm2O3), 2.20 (La2O3), and 2.05 (MgO) (2). It can be reasonably understood why Ru/MgO is active but Ru/TiO2 is significantly less active. Then, why is lanthana so effective even though it has a higher value (than that of MgO)? The electronegativity of Ce2O3 (2.28), in a reduced state, is still higher than that of MgO (2.05). The electron-donating effect of metallic cerium has been reported in the Ce¨CRu (0001) system (12). But ceria may not be reduced to the metallic state.

Journal of  catalysis 162, 138¨C142 (1996)
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Originally posted by xiaolong3097 at 2009-11-9 17:20:



лл£¬ÎÒÊÇ¿´ÎÄÏ×ÉϽ²µÃ£¬×÷ÕßÌáµ½ÁËÒ»¸ö¡°Sanderson¡¯s electronegativity ¡±£¬ËùÒÔÏëÖªµÀÕâ¸öԭʼÊý¾ÝÔÚÄÄÀ˳±ã²é²éÑõ»¯ÂÁµÄµç¸ºÐÔ£¬¾ÍÊÇÕâ¸öÄ¿µÄ£¬ºÇºÇ¡£ÄãÌáµ½µÄSandersonµç¸ºÐÔ±ê¶È¾ÍÊÇÎÒÒªÕÒµÄÊý¾Ý ...

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Originally posted by xiaolong3097 at 2009-11-9 17:20:



лл£¬ÎÒÊÇ¿´ÎÄÏ×ÉϽ²µÃ£¬×÷ÕßÌáµ½ÁËÒ»¸ö¡°Sanderson¡¯s electronegativity ¡±£¬ËùÒÔÏëÖªµÀÕâ¸öԭʼÊý¾ÝÔÚÄÄÀ˳±ã²é²éÑõ»¯ÂÁµÄµç¸ºÐÔ£¬¾ÍÊÇÕâ¸öÄ¿µÄ£¬ºÇºÇ¡£ÄãÌáµ½µÄSandersonµç¸ºÐÔ±ê¶È¾ÍÊÇÎÒÒªÕÒµÄÊý¾Ý ...

Journal of  catalysis 162, 138¨C142 (1996) µÄ²Î¿¼ÎÄÏ×2ÖеÄÊý¾Ý:
CAO(1.87) ²»¹ýÀÏʵ˵ÕâÊý¾ÝÕæµÄÓÐÓÃÂð£¬ÏÖÔÚ±¨µÀµÄ´ß»¯¼Á»îÐÔºÃÏñ²»ÍêÈ«°´Õâ¸ö¹æÂÉÀ´ÁË£¬ºÇºÇ

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Originally posted by bingyulin3 at 2009-11-9 20:35:


Journal of  catalysis 162, 138¨C142 (1996) µÄ²Î¿¼ÎÄÏ×2ÖеÄÊý¾Ý:
CAO(1.87) ²»¹ýÀÏʵ˵ÕâÊý¾ÝÕæµÄÓÐÓÃÂð£¬ÏÖÔÚ±¨µÀµÄ´ß»¯¼Á»îÐÔºÃÏñ²» ...

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