1. Effect of ceria morphology on the catalytic activity of Ru/ceria for the dehydrogenation of ammonia borane.
- Author
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Ruyue Wang, Yong Wang, Mengqi Ren, Guoxin Sun, Daowei Gao, Yap Ray Chin Chong, Xu Li, and Guozhu Chen
- Subjects
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AMMONIA , *BORANES , *DEHYDROGENATION , *ALKALIES , *ELIMINATION reactions - Abstract
Although the effect of CeO2 morphology on catalytic properties has been studied, research interests mainly focus on the oxidation reactions while the effect of CeO2 morphology on other reactions, such as dehydrogenation reaction, has rarely been reported. In this study, the dehydrogenation of ammonia borane (AB) was chosen as a model reaction to study the effect of CeO2 morphology (“c”, “r” and “o” denote cube, rod, and octahedron, respectively) on the catalytic properties of Ru/CeO2. Our study shows that the activity follows the order of Ru/c-CeO2 > Ru/r-CeO2 > Ru/o-CeO2, which is different from the order observed in other catalytic oxidation reactions. X-ray photoelectron spectroscopy (XPS), Raman and H2-Temperature program reduction (H2-TPR) measurements reveal that there is a weak interaction between Ru and c-CeO2, and metallic Ru is the dominant species in Ru/c-CeO2, which are possibly responsible for the highest catalytic activities among three Ru/CeO2 catalysts. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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