An ionic liquid-present hydrothermal method for preparing hawthorn sherry ball shaped palladium (Pd)-based composite catalysts for ethanol oxidation reaction (EOR)

Poisoning Effects of H2S, CS2, and COS on Hydrogen Oxidation Reaction over Pt/C Catalysts

“…All TG graphs demonstrate a significant mass loss at 100−200 °C, which is mainly ascribed to the evaporation of absorbed water. As shown in Figure 6a, H 2 S and SO 2 gases, with the main mass-tocharge ratios (m/e) of (32,33,34,35) and (48,50,64,66), respectively, were detected from the catalyst that was deactivated by H 2 S. Also, the main desulfurization temperature is 150−163 °C in which the sulfur content indicates the physical adsorption of S, and those at 370 °C and 450−513 °C indicate weak and strong chemical adsorptions, respectively. In the CS 2 system, as shown in Figure 6b, H 2 S and SO 2 are detected.…”

“…The strongest diffraction peak is Pt (111), as shown in Figure S2, reflecting that most of the Pt nanoparticles (NPs) in the catalysts are in face-centered cubic lattices. Generally, the good crystallinity of a material is beneficial to the directional migration of electrons . Therefore, here, we chose Pt (111) as the initial surface for DFT calculations.…”

“…Generally, the good crystallinity of a material is beneficial to the directional migration of electrons. 33 Therefore, here, we chose Pt (111) as the initial surface for DFT calculations. In addition, the crystallite sizes (d) of the catalysts were determined using the Scherrer equation (eq 14) as follows: 34…”

Facile Synthesis of Pd and PdPtNi Trimetallic Nanosheets as Enhanced Oxygen Reduction Electrocatalysts

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Pd nanosheets, [11] the derivative PdCu nanosheets, [12] PtPb/Pt nanoplates, [13] and PtPdM (M = Ni, Co, and Fe) nanosheets. [1] Another strategy to improve the activity and stability of catalysts in electrocatalytic reactions is to form alloys; [14][15][16][17] and alloying with non-noble metals may help reduce the cost of the catalyst further. [18][19][20][21] Compared to the well-studied bimetallic alloys, trimetallic alloys can possess a more complex alloy lattice that has better reactivity and stability, and the extra composition could further fine-tune the properties of the catalyst.

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Utilização de solvente eutético na carbonização hidrotérmica de resíduo de acerola

“…Um catalisador à base de paládio (Pd) em forma de bola para reação de oxidação de etanol foi preparado, pela primeira vez por Ding et al (2020), por meio de um método hidrotérmico de duas etapas na presença de líquido iônico. Na primeira etapa hidrotérmica, esferas de carbono foram obtidas na presença de glicose, um líquido iônico (ácido 1-butil-3-metil tetrafluorobórico) e um tipo de surfactante.…”