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ÎÊÌâ1 XRDÖÐûÓÐÃ÷ÏÔÌØÕ÷·å£¬Îª¿í·ºÃÖÉ¢·å£¬µ«TEMÖпÅÁ£·Ö²¼Îª1-15nm£¬Óоۼ¯£¬Ïë½âÊÍΪTEM¿´µÄÊÇ¿ÅÁ££¬¿ÅÁ£ÓÐÐí¶à¾§Á£×é³É£¬µ«ÕÒ²»µ½ÎÄÏ×Ö§³Ö£¬Âé·³ÄÄλÄÜÌṩÏà¹ØÓ¢ÎÄÎÄÏס£ ÎÊÌâ2£¬XRDÖÐÈç´Ë±íÊöÊÇ·ñÇ¡µ±£¬it should be noted that the characteristic peaks of catalyst became wider and weaker because the grain size of the catalyst is very small, short-range order and long-range disorder, indicating that --- species disperse in monolayers or amorphous phase on the surface of carrier. Èç¹û¿ÉÒÔÊÇ·ñÓÐÎÄÏ×Ö§³Ö¡£ ÎÊÌâ3£¬H2-TPR ÖÐÓÐÒ»¸ö´ó·å£¬ÊÇ·ñ¿ÉÒÔ˵ It is also found that only one reduction peak appeared in the H2-TPR spectrum indicating the similar adsorption and diffusion of hydrogen and the process of reduction simultaneously , which improve the uniformity of the particle size. Èç¹û¿ÉÒÔÓÐûÓÐÎÄÏ×Ö§³Ö |
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