التفاصيل البيبلوغرافية
| العنوان: |
Rh1−xPdxnanoparticle composition dependence in CO oxidation by oxygen: catalytic activity enhancement in bimetallic systems. |
| المؤلفون: |
Renzas, James Russell, Huang, Wenyu, Zhang, Yawen, Grass, Michael E., Hoang, Dat Tien, Alayoglu, Selim, Butcher, Derek R., Tao, Franklin (Feng), Liu, Zhi, Somorjai, Gabor A. |
| المصدر: |
Physical Chemistry Chemical Physics (PCCP); Feb2011, Vol. 13 Issue 7, p2556-2562, 7p |
| مستخلص: |
Bimetallic 15 nm Rh1−xPdxnanoparticle catalysts of five different compositions and supported on Si wafers have been synthesized, characterized using TEM, SEM, and XPS, and studied in CO oxidation by O2in two pressure regimes: atmospheric pressure and 100–200 mTorr. The RhPd bimetallic nanocrystals exhibited similar synergetic effect of increased reaction activity at both atmospheric (760 Torr) and moderate (100–200 mTorr) pressures compared with pure Pd or Rh. The magnitude of the effect depends on the relative pressures of the CO and O2reactant gases and the reaction temperature. The catalytic activity of the nanocrystals measured at moderate pressure is directly correlated to the APXPS studies, which were carried out in the same pressure. The APXPS studies suggest that the Pd–Rh interfaces are important for the enhanced activity of the bimetallic nanoparticles. [ABSTRACT FROM AUTHOR] |
|
Copyright of Physical Chemistry Chemical Physics (PCCP) is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
