Surface photochemistry of Rh(CO)2 on zeolite Y-production of a stable coordinatively unsaturated rhodium monocarbonyl surface species at room temperature

Article Abstract:

The photochemical production and chemical reactivity of a new coordinatively unsaturated rhodium monocarbonyl species on the surface of dealuminated zeolite Y over a temperature range of 300-420 K and a pressure range from 10(super -5) to 20 Torr is studied. The work provides insight into the photochemical behavior of Rh(CO)2 species supported on high-area zeolite materials that might improve the role of active rhodium monocarbonyl species in the development of heterogeneous photocatalysts.

Photochemistry

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Theoretical studies of N2O adsorption and reactivity to N2 and NO on Rh(111)

Article Abstract:

The adsorption and reactivity of N2O on a Rh(111) surface were investigated using periodic calculations. Numbers of adsorption modes in a narrow range of energies were found. The most stable situation corresponded to a weak bonding (0.39 eV) via the N-terminal atom on top of a Rh atom, with the lineal N2O molecule situated almost perpendicular to the surface.

Industrial Gas Manufacturing, Industrial gases, Nitrogen Dioxide, Spectra

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Kinetics of the reduction of the Rh(111) surface oxide: Linking spectroscopy and atomic-scale information

Article Abstract:

Scanning tunneling microscopy (STM) and high-resolution core level spectroscopy (HRCLS) are used to determine the reduction of the surface oxide on Rh(111) by [H.sub.2]. The parameters obtained from microscopic STM measurements have agreed well with spatially averaged data from HRCLS measurements.

Observations, Scanning tunneling microscopy, Dynamics, Dynamics (Mechanics), Mechanical properties

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