التفاصيل البيبلوغرافية
| العنوان: |
Size-dependent reactivity of Rh cationic clusters to reduce NO by CO in the gas phase at high temperatures. |
| المؤلفون: |
Ken Miyajima, Toshiaki Nagata, Fumitaka Mafuné, Tomoya Ichino, Satoshi Maeda, Taizo Yoshinaga, Masahide Miura, Takahiro Hayashi |
| المصدر: |
Physical Chemistry Chemical Physics (PCCP); 5/7/2024, Vol. 26 Issue 17, p13131-131396, 9p |
| مستخلص: |
The reactivity of the reduction of NO pre-adsorbed on Rh2-9+ clusters by CO was investigated using a combination of an alternate on-off gas injection method and thermal desorption spectrometry. The reduction of RhnNxOy+ clusters by CO was evaluated by varying the CO concentration at T = 903 K. Among the RhnNxOx+ clusters, the Rh3N2O2 + cluster exhibited the highest reduction activity, whereas the other clusters, Rh2,4-9NxOx +, showed lower reactivity. Density functional theory (DFT) calculations for Rh3 + and Rh6 + revealed that the rate-determining step for NO reduction in the presence of CO was NO bond dissociation through the kinetics analysis using the RRKM theory. The reduction of Rh3N2O2 + is kinetically preferable to that of Rh6N2O2 +. The DFT results were in qualitative agreement with the experimental results. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |