REMOVED: CO2 Separation using SILM (Supported Ionic Liquid Membranes) – Temperature Influence of Ionic Liquids Containing Carboxylic Anions in Comparison to NTf2

This article has been removed: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).This article has been removed at the request of the Executive Publisher.This article has been removed because it was published without the permission of the author(s)

Coexistence in locally regulated competing populations and survival of branching annihilating random walk

We propose two models of the evolution of a pair of competing populations. Both are lattice based. The first is a compromise between fully spatial models, which do not appear amenable to analytic results, and interacting particle system models, which do not, at present, incorporate all of the competitive strategies that a population might adopt. The second is a simplification of the first, in which competition is only supposed to act within lattice sites and the total population size within each lattice point is a constant. In a special case, this second model is dual to a branching annihilating random walk. For each model, using a comparison with oriented percolation, we show that for certain parameter values, both populations will coexist for all time with positive probability. As a corollary, we deduce survival for all time of branching annihilating random walk for sufficiently large branching rates. We also present a number of conjectures relating to the rôle of space in the survival probabilities for the two populations. © Institute of Mathematical Statistics, 2007

Chemisorption of carbon dioxide in imidazolium based ionic liquids with carboxylic anions

The absorption ability of carbon dioxide in ionic liquids (IL) containing a basic anion like acetate was investigated and compared to common ionic liquids as well as nitrogen data. Thereby, the IL showed chemisorption due to a formation of carboxylate at the imidazolium ring. The results obtained from [EMIM] [pivalate] are promising, since the IL could be completely recovered with a simple evacuating step, and without further heating, while having a similar absorption ability than [EMIM] [OAc].From the temperature dependency of the carbon dioxide absorption in [EMIM] [OAc] it can be seen that the solvation enthalpy is much smaller compared to common ionic liquids with physical absorption.Furthermore, the addition of the superbase DBU to [EMIM] [OAc] increased the CO 2-loading capacity

Gas solubilities in room temperature ionic liquids - Correlation between RTiL-molar mass and Henry's law constant

The solubility of CO2, CH4, N2, and CO was measured in a broad number of ionic liquids using a pressure drop set-up. A successful correlation of the Henry's law constants at 60°C was made to two empirical models already described in literature (Camper et al. [13] and Moganty and Baltus [25]). Subsequently, a new empirical model was proposed, which describes the Henry's law constant as a function of the molar mass of the ionic liquid, as long as physical interactions between gas and ionic liquid are dominant. Additionally, the entropy and enthalpy of solvation was studied by means of the temperature influence to the Henry's law constant