Surface state and composition of a disperse Pd catalyst after its exposure to ethylene

Article Abstract:

Palladium (Pd) black was exposed to ethylene alone or in its mixture with hydrogen at 300 and 573 K and the samples were investigated by X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). It was revealed that the surface spectroscopy of Pd black exposed to macroscopic pressures of ethylene at ~300K exhibited more or less similar features of the surface carbon containing residues as observed on single crystals with much lower exposures.

Photoelectron spectroscopy, Palladium catalysts

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Kinetic analysis of the reaction between (V2O5)(sub n=1,2(super +)) and ethylene

Article Abstract:

A theoretical and experimental analysis of the radical cation mechanism for oxygen atom transfer from (V2O5)(sub n=1,2(super +)) clusters to ethylene is conducted. The ab inito molecular dynamics simulations support the radical cation mechanism and establishes that ion-molecule interaction is the rate-determining step, while hydrogen transfer proceeds without significant barriers.

Science & research, Research, Molecular dynamics, Charge transfer, Atomic properties

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Large-scale synthesis of high-quality single-walled carbon nanotubes by catalytic decomposition of ethylene

Article Abstract:

A large-scale synthesis of high-quality single-walled carbon nanotubes (SWNTs) with high yield over a Fe-Mo/MgO catalyst using ethylene is discussed. The results show that ethylene is a very ideal carbon source for a large-scale synthesis of high-quality SWNTs.

Observations, Carbon, Chemical synthesis, Nanotubes

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