Nature of the Pt-Cobalt-Oxide surface interaction and its role in the CO2 Methanation

Design of trifunctional catalysts for promoting sequential condensation, deoxygenation, and aromatization of pyrolyzed mixed waste

“…Indeed, the addition of Pt and Ni has been reported to enhance the basicity of a catalyst. 46,47 Mg-Pt/meso-ZSM reveals the highest weak basicity of 0.240 mmol CO 2 g −1 followed by Mg-Ni/meso-ZSM, which has a basicity of 0.134 mmol CO 2 g −1 (Table 3). The strong basicity peaks of Mg-Pt/meso-ZSM (0.107 mmol CO 2 g −1 ) and Mg-Ni/ meso-ZSM (0.089 mmol CO 2 g −1 ) are both centered at 640 °C with an additional shoulder peak at 750 °C that is likely associated to Mg, as it coincides with the peak observed on Mg/ meso-ZSM.…”

Pt/MnO Interface Induced Defects for High Reverse Water Gas Shift Activity

“…Thus, the incorporation of Pt nanoparticles does not have any effect on the catalyst basicity, in contrast to our previous findings on mesoporous cobalt oxide. [21] The NAP-XP spectrum of the Pt-containing sample collected after the oxidation-reduction pre-treatment showed that in the Mn 2p region, 2p 3/2 component at 641.2 eV and the 2p 1/2 component at 653.3 eV dominated (Figure 1c). Besides, shake-up satellites were observed at a distance of � 6.5 eV from the main peaks.…”

“…Linearly adsorbed CO stretching on the atop site of the Pt surface is normally registered at � 2070-2080 cm À 1 depending on the nature of the support. [21,41,42] The CO adsorption and the corresponding frequencies were computed in several sites of Pt/MnO models (Figure S6). However, most conformations were discarded to represent the experimental results due to unfavored adsorption energies or too low CO frequencies.…”

CO2heterogeneous hydrogenation to carbon-based fuels: recent key developments and perspectives

“…101 Besides, the metal-support interface, a crucial site for CO 2 adsorption and activation, also exists for other noble-metals, such as Rh and Pt. [102][103][104][105] The methanation performance can also be improved by regulating this interaction. The synergistic effect between different metals, and the size regime of the Ru deposits can tune the hydrogen spillover and CO 2 activation, thus positively affecting the methanation reaction (Fig.…”