Highly efficient and enhanced sulfur resistance supported bimetallic single-atom palladium–cobalt catalysts for benzene oxidation

Nanotubular OMS-2 Supported Single-Atom Platinum Catalysts Highly Active for Benzene Oxidation

“…Our group also generated the x Pt 1 /meso-Fe 2 O 3 catalysts using the polyvinyl alcohol-protected reduction method and observed that the 0.25 wt % Pt 1 /meso-Fe 2 O 3 sample performed well in the oxidation of benzene . In another work on the Pd 1 Co 1 /Al 2 O 3 catalysts for benzene oxidation, we also observed that the Pd 1 Co 1 /Al 2 O 3 catalyst possessed enhanced sulfur resistance due to the presence of the palladium and cobalt oxide active sites . Up to now, however, it has not been seen in the literature that the Pt 1 /OMS-2 catalysts were prepared and used for eliminating VOCs.…”

“…21 In another work on the Pd 1 Co 1 /Al 2 O 3 catalysts for benzene oxidation, we also observed that the Pd 1 Co 1 /Al 2 O 3 catalyst possessed enhanced sulfur resistance due to the presence of the palladium and cobalt oxide active sites. 22 Up to now, however, it has not been seen in the literature that the Pt 1 /OMS-2 catalysts were prepared and used for eliminating VOCs. Furthermore, the OMS-2 support showed a much better catalytic activity than the bulk MnO 2 for benzene oxidation, as confirmed in section 3.4 (Catalytic Performance) .…”

Facilitating Catalytic Purification of Auto-Exhaust Carbon Particles via the Fe2O3{113} Facet-dependent Effect in Pt/Fe2O3 Catalysts

“…Thus, the key issue is to decrease the usage amount of the Pt element in the catalysts for vehicle exhaust purification. 22,23 However, the role and mechanism of the Pt element and metal oxide support in improving the removal efficiency of soot particles are still unclear, and it is still a challenge to obtain highefficient Pt-based catalysts for the removal of soot particles.…”

“…The carbon particulate matter (mainly soot particles) with adsorbed toxicants derived from vehicle exhaust is an important source of urban atmospheric fine particles, which can seriously endanger physical health and environment. − In the after-treatment system of vehicle exhaust, the particulate filter combined with the catalysts is widely regarded as one of the most efficient methods to eliminate them, and the catalysts are crucial to the removal efficiency of soot particles. − In recent years, a great number of high-efficient catalysts reported by the scientists are able to achieve catalytic soot purification at low temperatures, whose compositions involve noble metals, − transition-metal oxides, − alkaline metal oxides, , perovskite-like type oxides, − and rare earth oxides. − The primary active component in the commercial catalysts for soot purification is noble metal (Pt and Pd) elements, and the usage amount of the Pt element in the field of automobile exhaust purification exceeds 30% of the total usage amount in the Pgm market report (May 2021) of Johnson Matthey. Thus, the key issue is to decrease the usage amount of the Pt element in the catalysts for vehicle exhaust purification. , However, the role and mechanism of the Pt element and metal oxide support in improving the removal efficiency of soot particles are still unclear, and it is still a challenge to obtain high-efficient Pt-based catalysts for the removal of soot particles.…”

Toward the Mechanism Study of Pd/γ-Al2O3-Assisted Bioalcohol Combustion in a Flow Reactor

“…A recent review illustrates the progress on the design of Pd-based catalysts applied in reactions of selective hydrogenation, CO oxidation, methane combustion, electrocatalytic energy conversion (HER, ORR, and MOR), CO 2 reduction, and H 2 production. Specifically, Pd-based catalysts have been extensively studied in the catalytic removal of VOCs, including alkanes, alkenes, aromatics, and oxygen-containing and chlorinated compounds, in recent years. − For the catalytic combustion of ethanol over Pd-based catalysts, it was found that most of the current research focuses on the enhancement of catalytic performance by modification under lean conditions. − Furthermore, studies related to the mechanism are generally involved in several models that have been proposed for complete catalytic combustion . The detailed reaction pathways and intermediate descriptions of the reaction mechanism are still unclear and play an important role in the study of catalytic combustion.…”