π-Complexation for olefin/paraffin separation using aluminosilicates

Studies of the surface charge of amorphous aluminosilicates using surface complexation models.

Synthetic noncrystalline aluminosilicates with variable charge, similar to allophanes present naturally in volcanic soils, were studied. The surface charge behavior was determined by zero point charge (ZPC) measured by electrophoretic mobility (isoelectric points, IEP) and determined by potentiometric titration (point of zero salt effect, PZSE). The ZPC calculated by Parks model (ZPC(c)), compa...

A separation logic for the π-calculus

Reasoning about concurrent processes requires distinguishing communication from interference, and is especially difficult when the means of interaction change over time. We present a new logic for the π-calculus that combines temporal and separation logic, and treats channels as resources that can be gained and lost by processes. The resource model provides a lightweight way to constrain interf...

Phase separation induced by ladder-like polymer-polymer complexation.

Polymer-polymer complexation in solvent is studied using an extension of the self-consistent field theory. The model polymers are capable of forming ladder-like duplex structures. The duplex formation occurs with an abrupt change of entropy, resulting in a first-order transition. Moreover, the complexation can be stabilized by solvent-polymer interactions, instead of the usual specific binding ...

Separation of S – wave pseudoscalar and pseudovector amplitudes in π − p ↑ → π + π − n reaction on polarized target

Effect of Complexation Reaction Constant on the Separation of Propylene/Propane by Supported Liquid Membrane

Traditional systems for olefin/paraffin separation, like low-temperature distillation, are expensive and very energy consuming, and therefore, alternative separation methods are desired. Facilitated transport membranes are new tools for this separation to be substituted in large scale separation of olefin-paraffin mixtures. To design a membrane process for olefin-paraffin separation, equilibriu...