Disproportionation and other transformations of N2O at high pressures and temperatures to lower energy, denser phases

Article Abstract:

The beta-nitrous oxide (Cmca N2O) is laser heated to between 2000 and 3400 K at high pressure and it disproportionates into an ionic form of dimeric nitrogen dioxide (No(super +)NO(sub 3)(super -)) and nitrogen. The findings suggest that the primary driver for ionization is densification at high pressures, whereas dissociation between 10 and 30 GPa results from the combined effects of densification and entropy increases.

Nitrous Oxide, Optical properties, Ionization

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Factors influencing Cl(super -) and F(super -) enhancements in electron-stimulated desorption of CF2Cl2 coadsorbed with other gases

Article Abstract:

The possible influence of various factors on the enhancement of chlorine (Cl)(super -) and Fluorine (F)(super -) yields observed for the electron stimulated desorption (ESD) of CF2Cl2 coadsorbed with polar molecules is examined. Results indicate that the dissociation of CF2Cl2 by capture of electron self-trapped by polar molecules could be responsible for the giant negative-ion enhancements.

Alkalies and chlorine, Alkalies and Chlorine Manufacturing, Chlorine, Fluorine, Electric properties

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CO2 hydrate: synthesis, composition, structure, dissociation behavior and a comparison to structure I CH4 hydrate

Article Abstract:

Structure I carbon dioxide hydrate exhibits markedly different dissociation behavior from sI methane hydrate in experiments in which equilibrated samples at 0.1 MPa are heated. On the basis of measured weight gain after synthesis and gas yields from the dissociation experiments, approximately all cages in the hydrate structure are filled such that n approximately equal to 5.75.

Carbon Dioxide, Hydrates, Structure

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