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×îд߻¯ÎÄÕÂ------Applied Catalysis A: General
×îд߻¯ÎÄÕÂ------Applied Catalysis A: General
http://dx.doi.org/10.1016/j.apcata.2007.04.004
In Press, Accepted Manuscript, Available online 16 April 2007
ÎÄÕÂLow-temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2Cl3 precursor£¨H.G. Zhu, Z. Ma, J.C. Clark, Z.W. Pan, S.H. Overbury, S. Dai*, Applied Catalysis A: General, 2007£©publishÁË¡£I'm the second author of that paper. ÏÖ¾Íд×÷²¿·ÝºÍÎÄÕµĹǼÜ×÷Ò»½éÉÜ¡£
http://dx.doi.org/10.1016/j.apcata.2007.04.004
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3.1. General consideration: synthesis in basic media
Õⲿ·Ö¼òҪ˵Ã÷Ö»ÓÐÔÚÒ»¶¨µÄ¼îÐÔÌõ¼þÏ£¬²ÅÄÜʵÏÖ´ß»¯»îÐÔ£»¶øÔÚËáÐԺϳÉÌõ¼þÏ£¬Ã»Óд߻¯»îÐÔ¡££¨Õâ¾ÍÊÇ´ß»¯ÊµÑéµÄ°ÂÃ½á¹ûÓС°²î¾à¡±£¬²Å»á¡°ÓÐȤ¡±¡£·ñÔò10¸öÊý¾ÝµãÈ«²¿ÀàËÆ£¬Õâ¾ÍÖ»ÊÇÔÚÎó²î·¶Î§ÄÚÁË¡££©
3.2. Effect of pretreatment: reduction and calcination
Õⲿ·Ö˵µÄÊÇÔ¤´¦ÀíµÄÖØÒªÐÔ¡£Èç¹û°ÑºÏ³ÉºÃµÄ´ß»¯¼ÁÄÃÀ´¾Í×ö·´Ó¦£¬Ã»ÓлîÐÔ¡£Ò»¶¨Òª°Ñ²ÐÓàµÄÓлúÎïÉÕµôÒԺ󣬲ÅÓлîÐÔ¡££¨ÕâÒ²ºÜÓÐȤ£¬ÌåÏÖÁËÒ»ÖÖ¡°Ä§Êõ¡±ÕÜѧ£ººÜ¶àÈË·¢ÏÖ½ð´ß»¯¼ÁûÓлîÐÔ£¬ÒòΪºÜ¶àÈ˰ѺϳɳöÀ´µÄ¡¢º¬ÓдóÁ¿ÓлúÎïµÄ´ß»¯¼Á¡°ÄÃÀ´¾Í×ö¡±£¬ÄÇôµ±È»Ã»ÓлîÐÔ£¬ËäÈ»½ð¿ÅÁ£µÄ´óСÊÇ¡°×î¼Ñ¡±µÄ¡££©
ÕâÀïÃ棬³ýÁË´ß»¯ÊµÑéÍ⣬»¹ÓÐTPR/TPOºÍTG/DTAÅÔ֤ʵÑé¡£ÕâÀïÃ滹ÓÐÒ»¸ö»Áúµã¾¦µÄ¡°Õï¶ÏʵÑ顱£¬Õâ¸öʵÑéÊǵÚÒ»×÷Õß×öµÄ£ºËûΪÁËÖ¤Ã÷Ò»¶¨Òª°Ñ²ÐÓàµÄÓлúÎïÉÕµôÒԺ󣬲ÅÓлîÐÔ£¬ËûÏÈ°ÑÓлúÎïÉÕµô£¬·¢ÏÖ»îÐԸߡ£È»ºóËû°ÑÕâ¸ö¸ß»îÐԵĴ߻¯¼Á·ÅÔÚÓлú°·µÄÆøÌåÀïÃæѬ¹ýÒ¹£¬·¢ÏÖ´ß»¯¼Á»îÐÔ¾ÍûÁË£¬Õâ֤ʵÁËËûµÄ²Â²â¡£
3.3. Effect of gold loading
½éÉÜÁ˽ðº¬Á¿¶Ô´ß»¯»îÐÔµÄÓ°Ïì¡£ÔÚÕâÀÎÒ×¢ÒâÔËÓÃÁËÒ»ÖÖд×÷ÊÖ·¨£º¾ÍÊÇÒªºÏÀí¿¼ÂǾ¿¾¹Ïȱ¨´ß»¯½á¹û¡¢ÔÙ±¨±íÕ÷½á¹û£¨Èç3.2.£©£¬»¹ÊÇÏȱ¨±íÕ÷½á¹û¡¢ÔÙ±¨´ß»¯½á¹û£¨Èç3.3.£©£¿ÔÚͬһƪÎÄÕµIJ»Í¬Ð¡²¿·ÖÀÎÒʹÓõÄ˳Ðò²»Ò»¶¨Ò»Ñù£¬µ«ÊÇÈ·ÊǾ¹ý˼¿¼Á˵ġ£
ÔÚ3.2.ÖУ¬ÎÒÏȱ¨´ß»¯½á¹û¡¢ÔÙ±¨±íÕ÷½á¹û£¬ÄÇôÕâ¸ö¡°±íÕ÷½á¹û¡±²¿·ÖµÄÄ¿µÄ¾ÍÊÇΪÁ˽âÊÍÇ°ÃæµÄ¡°´ß»¯½á¹û¡±²¿·Ö£¬ÊÇÌṩ¸ö˵·¨µÄ¡£
µ«ÊÇ£¬Èç¹ûºóÃæµÄ¡°±íÕ÷½á¹û¡±ÎÞ·¨¸øÇ°ÃæµÄ¡°´ß»¯½á¹û¡±Ìṩ˵·¨£¬ÄÇô´ÎÐò¾ÍÒª¶Ôµ÷ÁË¡£±ÈÈçÔÚ3.3.ÖУ¬ÎÒÏÈÂÞÁÐÁ˲»Í¬½ðº¬Á¿µÄ´ß»¯¼ÁµÄXRDÊý¾Ý£¬È»ºóÁгöÒ»¸öµäÐÍÑùÆ·µÄµç×ÓÏÔ΢¾µÕÕƬ£¬×îºóÔÙÁд߻¯½á¹ûËæ׎ðº¬Á¿±ä»¯¶ø±ä»¯µÄÊý¾Ý¡£ÕâÑùµÄ»°£¬¾Í·Ç³£×ÔÈ»£¬Éó¸åÈË¿´Á˾ͻáºÜÊæ·þ£ºÇ°ÃæÊǽéÉÜ´ß»¯¼ÁµÄÎïÀí»¯Ñ§ÐÔÖÊ£¬ºóÃæ½éÉܾßÌå´ß»¯ÐÔÄÜ¡£
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3.4. Effect of post treatment in acidic or basic media
˵µÄÊÇ°Ñ´ß»¯¼Á¶ªµ½¼îÐÔÈÜÒºÖС¢ËáÐÔÆøÌåÖС¢Ë®ÖУ¬ÔÙÀÌÆðÀ´£¬¿´¿´´ß»¯»îÐÔÓÐʲô¸Ä±ä¡£ÕâÊÇÒ»×é¡°ÐËȤʵÑ顱£¬²»ÔøÓÐÈËÕâô×ö¹ý¡£
3.5. Deactivation, storage, and regeneration
½²µÄÊÇ´ß»¯¼ÁµÄʧ»î¡¢´¢´æºÍÔÙÉú¡£Ã»ÓÐÉÕ¹ýµÄ´ß»¯¼Á¡¢·ÅºÜ³¤Ê±¼ä¶¼²»»á»µ¡£Ò»µ©ÉÕ¹ýÁË£¬ËüÊÇÓлîÐԵģ»µ«ÊÇÔÚ¿ÕÆøÀï·Åʱ¼ä³¤ÁË£¬¾ÍûÓлîÐÔ¡£Ê§»îµÄ´ß»¯¼Á¿ÉÒÔͨ¹ýÔÙ±ºÉյķ½·¨Ê¹»îÐÔ¸´Ô¡£
3.6. Modification of Au/SiO2 by surface coating of MOx
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