کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
43582 | 45978 | 2007 | 7 صفحه PDF | دانلود رایگان |
A ternary Co–P–B amorphous alloy catalyst was prepared by chemical reduction with the mixed KBH4 and NaH2PO2 in aqueous solution, and was characterized by ICP, XRD, SAED, TEM, SEM, XPS, H2-TPD and hydrogen chemisorption. During liquid phase hydrogenation of maltose, the as-prepared Co–P–B catalysts exhibited 100% selectivity to maltitol and much higher activity than the Co–B, Co–P and Raney Ni, apparently owing to the synergistic promotions of the alloying B and P. More specifically, the alloying B increased the number of active sites (Sact) and donated partial electrons to the Co, which was favorable for the hydrogenation of the CO group in the maltose. Furthermore, the alloying P led to the enhancement of the intrinsic activity (RHS) by forming new Co clusters as active sites. The maximum activity was obtained on the Co72.2P5.9B21.9.
A ternary Co–P–B amorphous alloy catalyst was prepared by chemical reduction with the mixed KBH4 and NaH2PO2 in aqueous solution. During liquid phase hydrogenation of maltose, the as-prepared Co–P–B catalysts exhibited 100% selectivity to maltitol and much higher activity than the Co–B, Co–P and Raney Ni, apparently owing to the synergistic promotions of the alloying B and P.Figure optionsDownload as PowerPoint slide
Journal: Applied Catalysis A: General - Volume 325, Issue 1, 30 May 2007, Pages 34–40