A study on the characteristics of CO oxidation at room temperature by metallic Pt

The Effect of Coating TiO2 on the CO Oxidation of the Pt/γ-Alumina Catalysts

“…The BE of metallic Pt 0 is 70.86 eV and for the Pt oxide (Pt 2? 4f 7/2 ) equal 72.67 eV, which agrees with the reference [23]. However, in this fitting we found the line corresponding to the BE 74.5 eV, which is attributed to an impurity, probably aluminum oxide in the titania sample (dashed line).…”

“…BE results for all catalysts and surface atomic concentrations of Pt are presented in Table 2. The BE of metallic Pt 0 (4f 7/2 ) is 70.86 eV while for Pt oxide (Pt 2* 4f 7/2 ) is equal 72.67 eV, which agree with the values presented for Pt/TiO 2 catalyst in the reference of Ono et al and Seo et al [22,23]. [25].…”

Complete oxidation of formaldehyde at ambient temperature over supported Pt/Fe2O3 catalysts prepared by colloid-deposition method

“…For instance, Gracia et al [23] found that the catalytic activity of the supported Pt/Al 2 O 3 catalyst could be closely correlated with the proportion of Pt/PtO x , and fully oxidized Pt particles exhibit low activity for CO oxidation. Hong and coworkers [26] reported that the reduced Pt/TiO 2 catalysts displayed excellent activity in CO oxidation and the Pt species existed in the Pt 0 and Pt 2+ states on these catalysts. In our case, the results of catalytic test showed that the catalysts of Pt/Fe 2 O 3 -200 and Pt/Fe 2 O 3 -300 possessed relatively high catalytic activity, while the XPS study revealed that both metallic Pt and oxidized Pt were present in these two catalysts.…”

Size Effects of Platinum Colloid Particles on the Structure and CO Oxidation Properties of Supported Pt/Fe2O3 Catalysts

“…[11][12][13][14][15][16] Deng and co-workers, for example, found that FeO x -supported Pt catalysts prepared using a co-precipitation method exhibited high CO oxidation activity at ambient temperatures. 17 It was suggested that the presence of two adjacent, but different, active sites (Pt for CO and FeO x for O 2 ) with low apparent activation energies accounted for this high activity, although the contributions of the SMSIs (strong metal-support interactions) and Pt particle size effects cannot be ruled out.…”