Blar i USN Open Archive på forfatter "Perinu, Cristina"
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13C and 15N NMR characterization of amine reactivity and solvent effects in CO2 capture
Perinu, Cristina; Arstad, Bjørnar; Bouzga, Aud Mjærum; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)Factors influencing the reactivity of selected amine absorbents for carbon dioxide (CO2) capture, in terms of the tendency to form amine carbamate, have been studied. Four linear primary alkanolamines at varying chain ... -
Absorption and Desorption Study of Alkylamine Promoted DEEA Solvents for CO2 Capture
Bernhardsen, Ida Mortensen; Perinu, Cristina; Jens, Klaus-Joachim; Pinto, Diego Di Domenico; Knuutila, Hanna K (Journal article; Peer reviewed, 2018)Three primary and two secondary mono-alkylamines, and a di-alkylamine (3-(Methylamino)propylamine, MAPA) were investigated in blend with a tertiary amine (2-(Diethylamino)ethanol, DEEA). The aim of the study was to ... -
Application of 15N-NMR spectroscopy to analysis of amine based CO2 capture solvents
Perinu, Cristina; Arachchige, Gumunu L. Samarakoon; Arstad, Bjørnar; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)15N NMR spectroscopy is a useful tool for amine reactivity characterization since it can provide information about the availability of the lone pair of electrons on nitrogen through the measured chemical shift values, which ... -
Aqueous Mapa, DEEA, and Their Blend as CO2 Absorbents: Interrelationship between NMR Speciation, pH, and Heat of Absorption Data
Perinu, Cristina; Bernhardsen, Ida; Pinto, Diego Di Domenico; Knuutila, Hanna K; Jens, Klaus-Joachim (Peer reviewed; Journal article, 2019)On the basis of speciation by nuclear magnetic resonance (NMR) spectroscopy, heat of absorption, and pH data, the reactions occurring in aqueous MAPA (3-(methylamino)propylamine), DEEA (2-(diethylamino)ethanol), and their ... -
Carbon dioxide solubility in mixtures of methyldiethanolamine with monoethylene glycol, monoethylene glycol–water, water and triethylene glycol
Skylogianni, Eirini; Perinu, Cristina; Cervantes Gameros, Blanca Y.; Knuutila, Hanna K. (Peer reviewed; Journal article, 2020)Carbon dioxide solubility in non-aqueous and aqueous mixtures of methyldiethanolamine (MDEA) with monoethylene glycol (MEG) was studied due to the relevance of these solvents for the combined acid gas removal and hydrate ... -
CO2 Capture by Aqueous 3-(Methylamino)propylamine in Blend with Tertiary Amines: An NMR Analysis
Perinu, Cristina; Bernhardsen, Ida Mortensen; Svendsen, Hallvard Fjøsne; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2017)Aqueous 3-(Methylamino) propylamine (MAPA) in blend with 2-(Diethylamino) ethanol (DEEA) and other tertiary amines, which mainly differ from DEEA in the number of hydroxyl functions (-OH) and/or in the length and structure ... -
Equilibria of MEA, DEA and AMP with Bicarbonate and Carbamate: a Raman Study.
Arachchige, Gumunu L. Samarakoon; Andersen, Niels H.; Perinu, Cristina; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2013-08-05)Species distribution analysis in carbonated alkanolamine solution is import in order to estimate accurate thermodynamic properties. The applicability of Raman spectroscopy as an analytical tool for speciation of carbonated ... -
Influence of pKa on solvent performance of MAPA promoted tertiary amines
Bernhardsen, Ida Mortensen; Krokvik, Iris Renate Tøkje; Perinu, Cristina; Pinto, Diego Di Domenico; Jens, Klaus-Joachim; Knuutila, Hanna K (Peer reviewed; Journal article, 2018)In the present work, absorption and desorption performance of ten single tertiary amines and their blends with MAPA was studied using a screening apparatus. Absorption experiments were conducted at 40 °C and up to 9.5 kPa ... -
NMR spectroscopy applied to amine–CO2–H2O systems relevant for post-combustion CO2 capture: A review
Perinu, Cristina; Arstad, Bjørnar; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful non-invasive analytical technique for chemical analyses since direct measurements at a molecular level can be performed. In this work, a survey of NMR spectroscopy ... -
NMR-based carbamate decomposition constants of linear primary alkanolamines for CO2 capture
Perinu, Cristina; Arstad, Bjørnar; Bouzga, Aud Mjærum; Svendsen, John Arild; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)The amine carbamate related equilibrium (RNHCOO– + H2O ⇆ RNH2 + HCO3–) has been investigated with 13C NMR (Nuclear Magnetic Resonance) spectroscopy for a series of linear primary alkanolamines, and the apparent carbamate ...