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gaohaiyan

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RuÖú¼Á¶ÔCo/SiO2´ß»¯¼Á¾¶Ïò½á¹¹º¯ÊýµÄÓ°Ïì¼ûͼ¡£´Óͼ¿É¼û£¬¼ÓÈëRuÖú¼Áºó£¬¸÷ÀàÑùÆ·¾ùÔÚ0.151nm´¦³öÏÖCo-OÅäλ·å£¬ÔÚ0.248nm¡¢0.302nm´¦³öÏÖCo-CoÅäλ·å£¬Óëδ¼ÓÖú¼ÁµÄ´ß»¯¼ÁµÄ·åλÖûù±¾Ò»Ö£¬±íÃ÷´ß»¯¼ÁÖеÄîÜÎïÖÖÒÔCo3O4µÄÐÎʽ´æÔÚ¡£¼ÓÈëRuÖú¼Áºó£¬¸÷´ß»¯¼ÁµÄµÚ¶þÅäλ²ã·¢ÉúÁ˱仯¡£Co/SiO2´ß»¯¼ÁÔÚ0.480nm´¦³öÏÖµÚ¶þ¿Ç²ãCo-OÅäλ·å£¬Ëæ×ÅRuÖú¼ÁµÄ¼ÓÈ룬µÚ¶þ¿Ç²ãCo-OÅäλ·åµÄλÖÃÇ°ÒÆÖÁ0.467nm´¦¡£¼´Ê¹RuÖú¼ÁµÄº¬Á¿Ôö¼Óµ½9.96%£¬Ò²Ã»Óй۲쵽Co-RuÖ®¼äÏ໥×÷ÓÃÐγɻ¯ºÏÎï¡£Ru¶ÔîÜÎïÖÖµÄÓ°ÏìÖ÷ÒªÊÇͨ¹ýµç×ÓЧӦ·¢Éú×÷Óá£

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goodtimega

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gaohaiyan(½ð±Ò+30,VIP+0):¶àл£¡£¡ 10-26 09:52
The effect of Ru catalyst on Co/SiO2 radial distribution function is shown in the figure. As can be seen from the figure, by adding Ru additives in various types of samples, there is a Co-O coordination peak at 0.151nm, and Co-Co coordination peaks at 0.248nm and 0.302nm. The agreement with results in the absence of added catalyst additives indicates that the cobalt catalyst is in the form of Co3O4. After adding Ru additives, the catalyst of the second coordination layer has changed. Co/SiO2 catalyst at 0.480nm occurrs at the second coordination shell of Co-O peak, with the Ru additives participation. The second coordination shell of Co-O peak position moves forward at 0.467nm. Even if the Ru content increases to 9.96 percent additive, there is no evidence for the formation of Co-Ru interaction between the compounds. The major impact of Ru on the cobalt species is through electronic effects.
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