Short-lived reactive intermediate in the decomposition of formate on NiO(111) surface observed by picosecond temperature jump

Article Abstract:

A study was conducted to determine short-lived reactive intermediate in the decomposition of formate on NiO(111) surface observed by picosecond temperature jump. The study was carried out on the deuterated formate adsorbed on the surface using a ultrahigh vacuum chamber. Results indicated that the formates were in equilibrium with the stable bidentate formate. In addition, the activation energy for the decomposition reaction of the monodentate formate was higher than the height of the potential barrier.

Research, Surfaces (Materials), Chemical reactions, Surfaces (Technology)

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Time-resolved sum-frequency generation spectroscopy of methoxy and deuterated methoxy on Ni(111) using near-infrared laser pulses

Article Abstract:

An attempt is made to examine the methoxy [C[H.sub.3]O-] and deuterated (d-) methoxy (C[D.sub.3]O-) species on Ni(111) by time-resolved sum-frequency generation (SFG) spectroscopy over a range of substrate temperatures. The simulation has indicated a temperature jump of 250 K upon laser pumping, inducing a change in the molecular orientation or adsorption site of methoxy on the Ni(111) surface without decomposition of methoxy to adsorbed CO and hydrogen.

All Other Basic Organic Chemical Manufacturing, Industrial organic chemicals, not elsewhere classified, Methyl Ether, Nickel Compounds, Usage, Spectrum analysis, Spectroscopy, Deuterium, Structure

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Dynamic processes of olefins adsorbed on hydroxyl groups of DM20 zeolite excited by picosecond infrared pulsed: vibrational relaxation, short-lived species and desorption

Article Abstract:

Olefins adsorbed on Bronsted acidic hyrdroxyl groups (OD) of DM20 zeolite by transient infrared absorption spectral after excitation or the OD stretching mode using picosecond infrared lasers are investigated. The adsorbed olefins are ethylene, ethylene-d, propylene and isobutene and their adsorption forms are methyl adsorption for isobutene and pi-adsorption for the other olefins.

Zeolites, Analysis, Absorption spectra, Olefins, Alkenes

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