Low-temperature partial oxidation of methane over Pd–Ni bimetallic catalysts supported on CeO2

Highly Efficient Fabrication of Kilogram-Scale Palladium Single-Atom Catalysts for the Suzuki–Miyaura Cross-Coupling Reaction

“…The results of STEM, XRD, and AC HAADF-STEM (Figure S7a–d) confirmed that single-atom dispersion of Pd atoms was found on FeO x . The catalytic activity (Figure a) of Pd/FeO x -impregnation for the cross-coupling reaction between bromobenzene and phenylboronic acid was 4432 h –1 , lower than the activity (7844 h –1 ) of Pd 1 /FeO x -10 prepared by the ball milling method, suggesting that ball milling was an effective mean of catalyst activation compared to the impregnation method, which was beneficial to improve the activity and stability of the catalyst. , Compared with earlier reports, it can be seen that the TOFs and selectivity of Pd 1 /FeO x -10 for the Suzuki–Miyaura cross-coupling reaction were at the forefront level, surpassing most previous Pd-based catalysts (Table S6). An encouraging sign is that Pd 1 /FeO x -1000 also showed a high catalytic activity of ∼7400 h –1 under 40 °C (Figure b), similar to Pd 1 /FeO x -10.…”

Bimetallic Ru–Pd Supported on Ceo2 for the Catalytic Partial Oxidation of Methane into Syngas

“…Therefore, the bimetallic sample prepared by BM not only showed higher methane conversion and syngas production but also remarkably higher stability. On the other hand, it merits to be mentioned that, under exactly the same operation conditions, the catalytic stability of the Ru-Pd bimetallic catalyst prepared by the BM method is remarkably higher than that of the Ni-Pd bimetallic catalyst prepared by BM and with the same metal loading tested in our previous work [37].…”

“…In this paper, we focus on Ru-Pd bimetallic catalysts supported on CeO 2 to conduct the POM process at low temperature. In our previous work [35,37] we have observed the good performance of Pd-ceria-based catalysts for POM and the positive synergy between Pd and Ni (noble metal and non-noble-metal) for the reaction. Now we want to explore the Pd-Ru system as an example of noble metal-noble metal bimetallic formulation, taking into account the good performance of Ru-based catalysts for POM [22].…”

“…The ball milling technique has emerged recently as an important technological process for the preparation of catalysts because it is simple, fast, cost-effective, and environmentally-friendly. Importantly, the resulting materials have demonstrated enormous potential to activate C -H bonds for the transformation of methane [35][36][37]. We have also studied the importance of metal loading, metal ratios and order of incorporation of the metals and compared the results with monometallic Ru-CeO 2 and Pd-CeO 2 .…”

Mechanochemical synthesis of nanostructured and composite oxide ceramics: From mechanisms to tailored properties

“…This article reviews the chemical synthesis of various nanostructured ceramic oxides by mechanical force. These ceramics include: alumina (Al 2 O 3 ), 31,[41][42][43][44] zirconia (ZrO 2 ), 14,45 titania (TiO 2 ), 46,47 magnesium oxide (MgO), 48,49 iron oxide (Fe 2 O 3 ), 50,51 and cerium oxide (CeO 2 ), [52][53][54][55] as well as certain functional composite oxide ceramics. Numerous materials have been synthesized using mechanochemical synthesis techniques, and various high-energy grinding equipment continues to be developed.…”