期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 111, 期 8, 页码 3476-3479出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp0667700
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A mixture of TiF3-doped NaH/Al was directly used as the starting material, and hydrogenated singly in order to study the chemical state and role of Ti species in hydrogenation. X-ray absorption spectroscopy shows that Ti3+ was essentially reduced to Ti-0 and formed Ti-Al clusters during the doping, i.e. the ball-milling process. The local environment around Ti atoms in the clusters became homogeneous and ordered after hydrogenation at 100-140 degrees C. The Ti-Al clusters are believed to be the catalyzing agent for the dissociation of the hydrogen molecule and the subsequent formation of the hydride.
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