Effect of the Presence of MEA on the CO2 Capture Ability of Superbase Ionic Liquids

The miscibility of monoethanolamine (MEA) in five superbase ionic liquids (ILs), namely the trihexyl-tetradecylphosphonium benzotriazolide ([P66614][Bentriz]), trihexyl-tetradecylphosphonium benzimidazolide ([P66614][Benzim]), trihexyl-tetradecylphosphonium 1,2,3-triazolide ([P66614][123Triz]), trihexyl-tetradecylphosphonium 1,2,4-triazolide ([P66614][124Triz]), and trihexyl-tetradecylphosphonium imidazolide ([P66614][Im]) was determined at 295.15 K using 1H NMR spectroscopy. The solubility of carbon dioxide (CO2) in equimolar (IL + MEA) mixtures was then studied experimentally using a gravimetric technique at 295.15 K and 0.1 MPa. The effect of MEA on the CO2 capture ability of these ILs was investigated together with the viscosity of these systems in the presence or absence of CO2 to evaluate their practical application in CO2 capture processes. The effect of the presence of MEA on the rate of CO2 uptake was also studied. The study showed that the MEA can enhance CO2 absorption over the ideal values in the case of [P66614][123Triz] and [P66614][Bentriz] while in the other systems the mixtures behave ideally. A comparison of the effect of MEA addition with the addition of water to these superbase ILs showed that similar trends were observed in each case for the individual ILs studied.

Supporting Creative, Whole Peacebuilders: An Apprenticeship Program

This chapter has two major sections, one by Lederach and the apprentices, and one by Goldberg. The introduction above represents an amalgam of Lederach’s own writing and Goldberg’s, which summarizes some key information, but loses in written flow what it gains in information. As Goldberg reviewed Lederach’s initial chapter, she became deeply interested and asked Lederach for further materials. She conducted two interviews and collected background and supplementary materials and used them to explore some areas that were touched on by Lederach, but, if expanded, offered greater richness. In order to preserve the clarity of writing, the material will be presented in two sections. The first will include Lederach’s original chapter with the apprentice narratives. We start with an overview provided by John Paul that describes several practices incorporated into the process of the past three years. Each of the four apprentices will then reflect on how they experienced these practices and the impact, if any, they have had on their lives and professional careers. Each segment written by Lederach and the apprentices is written in the first person, starting with Lederach’s practices, below. Following will be Goldberg’s work deepening the information presented in Lederach’s section, and the conclusion.