2019年11月15日 · Pt nanoparticles are the active centers for O2 activation and Al 2 O 3 support offers sites for the adsorption of toluene. A kind of highly efficient and low cost supported-Pt catalyst for oxidation of toluene is obtained through controlling both the chemical state of Pt active sites and surface properties of supports.

2017年7月27日 · Herein, we report a synthetic strategy for Pt single-atom catalysts with outstanding stability in several reactions under demanding conditions. The Pt atoms are firmly anchored in the internal...

2020年5月1日 · In this work, we studied how metal-support interaction affected the morphology and size of Pt clusters on Al 2 O 3. Under oxidizing atmosphere, when the specific interaction between oxidized Pt and Al 2 O 3 is dominant, highly dispersed 2D PtO 2 rafts (1 nm) and atomically dispersed Pt atoms formed.

2019年10月15日 · The FT EXAFS spectrum of Pt-N-400-250H allows identifying the formation of Pt nanoparticles (backscattering on Pt−Pt shell at an uncorrected distance between 2 and 3 Å) while the Pt-Cl samples are largely oxidized and no significant Pt−Pt interaction corresponding to metallic Pt can be identified.

2010年6月9日 · The noble metal (Pd, Pt) particles on γ-Al 2 O 3 were studied by a variety of physicochemical methods, including XRD, UV–vis DRS, HRTEM, TPR-H 2, XPS, and catalytic properties measurements. We performed systematic study of Pd(Pt)/γ-Al 2 O 3 catalysts depending on the calcination temperature of the support/catalyst and the CO + O 2 treatment.

2023年12月26日 · The higher CO adsorption capacity and the more efficient NH 3 /O 2 activation ability on Pt/Al 2 O 3 with relatively lower Pt dispersion well explained its higher CO/NH 3 oxidation activity. This study emphasizes the importance of avoiding a singular pursuit of single-atom catalyst synthesis and instead focusing on achieving the most effective ...

The Pt/Al 2 O 3 catalyst pre-treated at 200 °C (i.e., Pt/Al 2 O 3-200) exhibited relatively high activity for CO oxidation. According to the results of catalyst characterization, Pt/Al 2 O 3 -200 could efficiently govern O 2 adsorption by trapping O 2 molecules on Pt sites and producing active oxygen species.

2017年7月27日 · 在本文中，我们报告了在苛刻条件下在几种反应中具有出色稳定性的Pt单原子催化剂的合成策略。 Pt原子牢固地锚定在介孔Al 2 O 3的内表面中，很可能由不饱和五面体的Al 3+配位中心稳定。

2021年5月7日 · Pt-Al2O3 | Al2O3Pt | CID 129769053 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

2020年7月13日 · Here, we develop a catalyst of Pt nanoparticles on Al 2 O 3 that exhibits extremely high activity with 100% CO conversion at −20 °C and orders of magnitude higher specific rate than current commercial catalysts.