WorldCat Identities

Coutinho, João A. P.

Overview
Works: 20 works in 25 publications in 2 languages and 152 library holdings
Genres: Conference papers and proceedings 
Roles: Thesis advisor, Other, Author
Classifications: QD561, 541.372
Publication Timeline
.
Most widely held works by João A. P Coutinho
Ionic liquids : synthesis, properties, technologies, and applications by Catherine Santini( )

4 editions published in 2019 in English and held by 122 WorldCat member libraries worldwide

The current book brings together the latest developments in the area of ionic liquids, including synthesis, purity control, toxicity, and scaling-up technologies. In addition, the authors explore the applications of ionic liquids in organic synthesis and catalysis, separation techniques and nanomaterials engineering. Written by key experts in the field, this book is an invaluable material for organic and green chemists in academia and industry
Integration of aqueous (micellar) two-phase systems on the proteins separation by Filipa A Vicente( )

2 editions published in 2019 in English and held by 3 WorldCat member libraries worldwide

The use of thermosensitive micellar systems as selective platforms of extraction( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Ionic liquids-based aqueous biphasic systems as an effective tool for the extraction of tetracycline from fermentation broth( )

1 edition published in 2015 in English and held by 2 WorldCat member libraries worldwide

Cloud Points : Can we measure or model them ? by João A. P Coutinho( Book )

2 editions published in 2002 in English and held by 2 WorldCat member libraries worldwide

Cloud point extraction of immunoglobulin G from human plasma( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Novos sistemas micelares de duas fases aquosas com líquidos iónicos = Novel aqueous micellar two-phase systems with ionic liquids by Filipa A Vicente( Book )

1 edition published in 2014 in Portuguese and held by 2 WorldCat member libraries worldwide

This work addresses the design of novel aqueous micellar two-phase systems (AMTPS) using ionic liquids (ILs) as a new class of co-surfactants for extractive processes and the assessment of their potential of application to the extraction of diverse (bio)molecules. Firstly, the coexistence curves of AMTPS based on the surfactant Triton X-114 and distinct ILs composed of imidazolium, phosphonium and quaternary ammonium structures were determined. These allowed the investigation of the impact of IL absence/presence, concentration and structural features on the behavior of the coexistence curves. The designed AMTPS were then used to carry out partition studies involving two model (bio)molecules, the protein Cytochrome c and the dye Rhodamine 6G. It was shown that the presence of ILs as co-surfactants is able to enhance not only the partition coefficients, but also the selectivity parameters of the process. These AMTPS were also applied to the extraction of the natural colorant curcumin from its vegetal extract with complete recovery into the micelle-rich phase however, there are interactions, yet unknown, affecting curcumin extraction. Finally, the new AMTPS were proposed as suitable techniques to be used in the domain of analytical chemistry. Hence, they were used in the extraction of tenofovir disoproxil fumarate, an antiretroviral, in order to facilitate its detection. After optimizing several operational parameters, it was possible to attain extraction efficiencies up to 100%. As the current techniques may present low efficiencies and require the use of organic solvents, AMTPS are envisaged as more sustainable approaches
Purification of complex proteinic mixtures using biocompatible aqueous (micellar) twophase systems( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Purification of R-phycoerythrin from Gracilaria sp. using ionic liquid-based thermoswitchable systems( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Insights into the Nature of Eutectic and Deep Eutectic Mixtures by Mónia A. R Martins( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Binary Mixtures of Ionic Liquids in Aqueous Solution: Towards an Understanding of Their Salting-In/Salting-Out Phenomena by Catarina M. S. S Neves( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

High-pressure solubility of CO2 in glymes( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract: The study of carbon dioxide (CO2) solubility in different solvents is important for the development of carbon capture and storage (CCS) technologies as well as for enhanced oil recovery (EOR) through CO2 injection. Using two different experimental methodologies, based on the synthetic method, the high-pressure solubilities of CO2 in four glymes, namely diethylene glycol methyl ether (DEGME), diethylene glycol dimethyl ether (DEGDME), diethylene glycol ethyl ether (DEGEE) and diethylene glycol diethyl ether (DEGDEE) were measured in a wide range of temperatures (293-353K) and pressures up to 13MPa. Furthermore, the experimental CO2 solubilities in the studied glymes were well described using the soft-SAFT EoS with parameters transferred from previous works, reinforcing its value as a reliable tool for the efficient simulation and design of new CCS/EOR technologies
Evaluating self-buffering ionic liquids for biotechnological applications( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

An integrated process for enzymatic catalysis allowing product recovery and enzyme reuse by applying thermoreversible aqueous biphasic systems1( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract : An integrated biocatalysis-separation process: the reaction step occurs in a homogeneous medium, followed by enzyme and product separation in a liquid-liquid system promoted by temperature changes. Abstract : Herein, thermoreversible aqueous biphasic systems (ABS) composed of ammonium-based zwitterions (ZIs) and polymers are disclosed to act as integrated bioreaction-separation processes. The biocatalytic reaction involving laccase occurs in homogeneous media, after which small changes in temperature induce the formation of two phases and the complete separation of the enzyme from the products in a single-step. These systems also allow the recovery and reuse of the enzyme, along with the ZI-rich phase, contributing towards the development of sustainable biocatalytic processes
Separation of phenolic compounds by centrifugal partition chromatography1( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract : An integrated process to purify a mixture of phenolic compounds was implemented in continuous regime by using centrifugal partition chromatography. Abstract : Phenolic compounds are ubiquitous biomolecules exhibiting a wide range of physiological properties, with application in the pharmaceutical and nutraceutical fields. In this work, aqueous biphasic systems (ABS) formed by polyethylene glycol and sodium polyacrylate, and inorganic salts or ionic liquids as electrolytes, were applied for the purification of caffeic, ferulic and protocatechuic acids (CA, FA, and PA, respectively), vanillin (VN) and syringaldehyde (SA), followed by the use of centrifugal partition chromatography (CPC) to reinforce the fractionation process scale-up. In single-step experiments in ABS, high selectivities and adequate partition coefficients (K CA = 2.78 ± 0.20; K PA = 0.44 ± 0.04; K FA = 0.23 ± 0.01; K VN = 1.12 ± 0.05 and K SA = 1.23 ± 0.02) were achieved using ABS formed by sodium chloride as the electrolyte. This system was further applied in CPC, allowing an efficient separation of the five phenolic compounds after the optimization of the equipment operational conditions, while demonstrating the potential of polymer-based ABS to be used in liquid-liquid chromatography. Finally, the recovery of the phenolic compounds (between 65 and 87%) with high purity from the ABS phases was demonstrated, allowing the reuse of the ABS phase-forming components, which was proved to be of low environmental impact. In fact, in a scenario where the polymeric phases are reused, the carbon footprint is decreased to 36%, as the consumption of new chemicals and water reduces considerably
Mechanism of ionic-liquid-based acidic aqueous biphasic system formation1( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract : This work represents a major contribution to the understanding of ionic liquid-based acidic aqueous biphasic system formation and application. Abstract : Ionic-liquid-based acidic aqueous biphasic systems (IL-based AcABS) represent a promising alternative to the solvent extraction process for the recovery of critical metals, in which the substitution of the inorganic salt by an acid allows for a 'one-pot' approach to the leaching and separation of metals. However, a more fundamental understanding of AcABS formation remains wanting. In this work, the formation mechanisms of AcABS are elucidated through a comparison with traditional aqueous biphasic systems (ABS). A large screening of AcABS formation with a wide range of IL identifies the charge shielding of the cation as the primary structural driver for the applicability of an IL in AcABS. Through a systematic study of tributyltetradecylphosphonium chloride ([P44414]Cl) with various chloride salts and acids, we observed the first significant deviation to the cationic Hofmeister series reported for IL-based ABS. Furthermore, the weaker than expected salting-out ability of H3 O + compared to Na + is attributed to the greater interaction of H3 O + with the [P44414] + micelle surface. Finally, the remarkable thermomorphic properties of [P44414]Cl based systems are investigated with a significant increase in the biphasic region induced by the increase in the temperature from 298 K to 323 K. These finding allows for the extension of ABS to new acidic systems and highlights their versatility and tunability
2009 Iberian Meeting on Ionic Liquids : [... special section ... (IMIL) which was held at the University of Aveiro, Portugal, June 15-16, 2009]( Book )

1 edition published in 2010 in English and held by 1 WorldCat member library worldwide

WASTE VALORISATION USING IONIC LIQUIDS by Francisca A. e Silva( Book )

1 edition published in 2022 in English and held by 1 WorldCat member library worldwide

Mechanisms ruling the partition of solutes in ionic-liquid-based aqueous biphasic systems - the multiple effects of ionic liquids1( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  General Special  
Audience level: 0.00 (from 0.00 for Ionic liqu ... to 0.00 for Ionic liqu ...)

Ionic liquids : synthesis, properties, technologies, and applications
Covers
WASTE VALORISATION USING IONIC LIQUIDS
Languages