Synthesis and characterization of carbon black supported Pt–Ru alloy as a model catalyst for fuel cells

A study about the effect of the temperature of hydrogen treatment on the properties of Ru/Al2O3 and Ru/C and their catalytic behavior during 1-heptyne semi-hydrogenation

“…Figure 2 presents the TPR profile of Ru/C. Two peaks can be noted at 408 and 460 K. These peaks have been assigned to the reduction of Ru(III) species to Ru 0 and to the decomposition of the support surface oxygen functional groups [22,23]. As the profile of our C support, also shown in figure 2, does not show peaks up to 700 K we can only assigned those peaks to the reduction of Ru(III) species.…”

CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method

“…In our previous study, we reported that when the size of the deposited particles is less than 4 nm, no notable peak corresponding to the metal is observed [29,30]. Zhang et al have also reported that for metal particles less than 4 nm, this peak was not detected in the XRD pattern because of detection limitations [33]. According to these reports, the absence of Ru peaks in the XRD patterns leads to a suggestion that Ru particles are less than 4 nm in size.…”

Preparation of Ru-loaded CdS/Al-HMS nanocomposites and production of hydrogen by photocatalytic degradation of formic acid

“…A series of composites, Ru-loaded CdS/Al-HMS, were prepared by incipient wetness impregnation of the CdS/Al-HMS with solutions of RuCl 3 ÁxH 2 O (99.99%, Alfa) in a mixture of benzene and ethanol (4:1, v/v) and the samples were reduced in H 2 at 300 8C for 2 h [9]. In correspondence to noble metal loading, the composites were designated as 0.07Ru/CdS/Al-HMS, 0.16Ru/CdS/ Al-HMS, 0.21Ru/CdS/Al-HMS, 0.34Ru/CdS/Al-HMS and 1.0Ru/CdS/ Al-HMS, respectively.…”