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ÎÒµÄÉó¸åÒâ¼û»Ø¸´ËµTPRÊÔÑéÑùÆ·Êý¾Ý²âµÃÉÙ£¬²¢²»ÄÜ˵Ã÷·åλÖÃÏàÏà¶ÔÓ¦µÄÎïÖÖ£¬¿ÉÊDZðµÄÎÄÏ×¶¼ÊÇÕâÑùÈ·¶¨µÄ°¡£¬ÇóÄÄλ¸ßÊÖÖ¸µãһϸÃÔõô»Ø¸´ÄØ£¿Íò·Ö¸Ðл£¬Éó¸åÒâ¼ûÔ­ÎÄ£ºThe interpretation of the TPR data is sometimes risky. E.g. shifting of rather broad peaks at low intensity levels is usually not conclusive without making an extensive series of experiments of samples with gradually increasing composition. The current number of samples is too small and their composition too broad to arrive at such conclusions. The conclusions about the presence of spinel type Ni or Co containing species needs to be revisited. It is well known that during TPR, due to its nature of being a dynamic technique, such species are easily formed in-situ.
Similar comments can be made about the apparent shifting of the high temperature (average) peaks. Usually this is due to the varying intensity of individual (sub) peaks. Without deconvolution of such average peaks it can be risky to make conclusions about their nature or the nature of the species involved.
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