The negative ion states of sulfur hexafluoride

Porous Organic Cages for Sulfur Hexafluoride Separation

A series of porous organic cages is examined for the selective adsorption of sulfur hexafluoride (SF6) over nitrogen. Despite lacking any metal sites, a porous cage, CC3, shows the highest SF6/N2 selectivity reported for any material at ambient temperature and pressure, which translates to real separations in a gas breakthrough column. The SF6 uptake of these materials is considerably higher th...

Zeolites for the selective adsorption of sulfur hexafluoride.

Molecular simulations have been used to investigate at the molecular level the suitability of zeolites with different topology on the adsorption, diffusion and separation of a nitrogen-sulfur hexafluoride mixture containing the latter at low concentration. This mixture represents the best alternative for the sulfur hexafluoride in industry since it reduces the use of this powerful greenhouse ga...

The carbon dioxide leakage from chambers measured using sulfur hexafluoride

In plant chamber studies, if CO2 leaking from a chamber is not quantified, it can lead to an overestimate of assimilation rates and an underestimate of respiration rates; consequently, it is critical that CO2 leakage be determined. Sulfur hexafluoride (SF6) was introduced into the chambers as a tracer gas to estimate leakage rates. Chamber leakage constants were determined by measuring the rate...

Low-lying negative-ion states of calcium.

Influence of fuel sulfur induced stable negative ion formation

On the influence of fuel sulfur induced stable negative ion formation on the total concentration of ions emitted by an aircraft gas turbine engine: comparison of model and experiment A. Sorokin 2, , F. Arnold, and P. Mirabel Atmospheric Physics Division, MPIK, P.O. Box 103980, D-69029 Heidelberg, Germany CGS of the Université Louis Pasteur and CNRS 1, rue Blessig, F-67084 Strasbourg, France Per...