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Showing 1 to 13 of 13 for “"Eley-Rideal"”.
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Experimental Studies of the Heterogeneous Kinetics of OH Radicals with terbuthylazine, Adsorbed on Self- Synthesized SiO2 Particles, in a Temperature Controlled Aerosol Smog Chamber
… the limiting slope for COH=>0 according to an Eley-Rideal mechanism leads to k(OH)Eley-Rideal = (8.6±1.2) ×10-12 cm3 s-1 (which is similar to the current views of structure/reactivity relations for gas-phase reactions). Chamber experiments were also performed at 6.5 °C and -10 °C. The …
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Mechanistic Modeling of Biodiesel Production via Heterogeneous Catalysis
… The esterification of palmitic acid obeyed the Eley-Rideal mechanism in which palmitic acid and methanol are adsorbed on the surface for SO?/ZrO?-550°C and AcAl?O? respectively. The coefficients of determination of the deterministic model were 0.98, 0.99 and 0.99 for SO?/ZrO?-550°C at 40, 60 and …
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Development of a semi–empirical reaction kinetic model for PEM fuel cells
… a kinetic model was developed, based on the Eley-Rideal mechanism. Furthermore, experiments were conducted at different oxygen partial pressures and low potentials whereby the associative mechanism is believed to dominate. Under these conditions linear sweep voltammograms were recorded. …
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Sulfate and Hydroxide Supported on Zirconium Oxide Catalysts for Biodiesel Production
… and Lewis acid (Al₂O₃) catalysts obeyed Eley-Rideal kinetics with palmitic acid and methanol adsorbed on the active site respectively. Zirconium oxide was also impregnated with sodium hydroxide to produce basic catalysts. The best catalyst was produced when zirconium oxide was impregnated …
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Kinetics of Methyl Ketone and Levulinic Acid Oxidative Scission Over Supported Vanadium Oxide Catalysts
… scission of methyl ketones involves both Eley-Rideal and Mars van Krevelen mechanisms. Accordingly, this joint mechanism is proposed for the first time. The active site for the methyl ketone oxidative scission was identified using pyridine poisoning, NH3 poisoning, and water co-feeding. …
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Oxidation Chemistries Over Catalysts Containing M-N4 Active Sites
… (L-H) step and the second is formed through an Eley-Rideal (E-R) step, and is a distinct reaction mechanism from N-doped carbons. In liquid phase cyclohexane oxidation, apparent kinetics were similar between FeCl16PC/FAU and Fe-N-C. Data for both samples regress well to a radical mediated E-R …
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Sulphur dioxide oxidation mechanism on Pt surfaces : a DFT study
… reaction on Pt(111) were investigated. Both the Eley-Rideal and Langmuir-Hinshelwood mechanisms were evaluated on pristine Pt(111) with the former mechanism identified as occurring by preference.
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SYNTHESIS AND CHARACTERIZATION OF SUPPORTED SOLID ACID CATALYSTS FOR CONVERSION OF GREEN SEED CANOLA OIL TO BIODIESEL
… model (PH) and adsorption-based models such as Eley-Rideal (ER) Langmuir–Hinshelwood-Hougen–Watson (LHHW). The activity coefficients of the reactant and product species were estimated using the UNIQUAC method. The Eley-Rideal reaction pathway with the surface reaction of adsorbed methanol as the …
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Reconstruction of Rhodium Clusters During CO Oxidation and Consequences on The Reaction Mechanism
… the plausible mechanism was suggested to be Eley-Rideal/Mars Van Krevelen mechanism.
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Understanding Heterogenous Catalysis on Zeolites and Manganese Oxides
… is proposed to proceed via a solvent assisted Eley-Rideal mechanism with molecular hydrogen in the liquid phase. Birnessite has no available adsorption site without the introduction of an oxygen vacancy and a traditional Langmuir-Hinshelwood style mechanism cannot occur because substrate …
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Structural and Kinetic Study of Low-temperature Oxidation Reactions on Noble Metal Single Atoms and Subnanometer Clusters
… react with the surface adsorbed O* through an Eley-Rideal reaction mechanism. Ir single atoms also provide an interfacial site for the facile O2 activation between Ir and Al with a low barrier, and therefore O2 activation step is feasible even at room temperature. For Pt single-atom catalysts, …
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Structure-Sensitivity of CO Oxidation Over Supported Pt Catalysts in the Subnanometer Regime and Its Origin
… and a multi-branch reactive cycle with competing Eley-Rideal and Langmuir-Hinshelwood pathways. Both reaction pathways proceed with the involvement of oxygen adatoms directly provided by O2 dissociation, and not lattice oxygen, leading to very low turnover frequency. We then show that CO oxidation …
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Development of physical models for the mesoscopic simulation of gas-surface interactions
… mechanisms include adsorption, desorption, Eley-Rideal (ER), and several types of Langmuir-Hinshelwood (LH) mechanisms. Both gas-surface (e.g., adsorption, ER) and pure-surface (e.g., desorption) reaction mechanisms are incorporated, and the framework also includes catalytic or surface …