J
João G. Crespo
Researcher at Universidade Nova de Lisboa
Publications - 343
Citations - 10395
João G. Crespo is an academic researcher from Universidade Nova de Lisboa. The author has contributed to research in topics: Membrane & Ionic liquid. The author has an hindex of 48, co-authored 311 publications receiving 8673 citations. Previous affiliations of João G. Crespo include University of Lisbon & Fritz Haber Institute of the Max Planck Society.
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Journal ArticleDOI
Characterisation and modelling of transient transport through dense membranes using on-line mass spectrometry
TL;DR: In this article, a real-time characterisation of transport through dense membrane is obtained by using on-line mass spectrometry (MS) monitoring, which allows to acquire the concentration of solutes in the permeate compartment with time intervals of 2-s (and shorter if required).
Journal ArticleDOI
Enantioselective Separation of Propranolol by Chiral Activated Membranes
Tània Gumí,Cristina Palet,Quirina Ferreira,Rui M.C. Viegas,João G. Crespo,Isabel M. Coelhoso +5 more
TL;DR: In this article, chiral activated membranes have been tested for the enantioseparation of the racemic drug propranolol, using polysulfone (PS) based membranes.
Journal ArticleDOI
Development and characterisation of hybrid polysaccharide membranes for dehydration processes
TL;DR: These membranes were stable when applied in N2 dehydration, leading to reproducible performance and very high water selectivities, similar to PERVAP® 4101, however they lost their stability when exposed to solutions of 10.0 wt.% water in ethanol.
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Biocatalytic CO2 Absorption and Structural Studies of Carbonic Anhydrase under Industrially-Relevant Conditions
Aline Machado de Castro,Aline Machado de Castro,Elisabete Ferreira,Carla A.M. Portugal,Luísa A. Neves,João G. Crespo +5 more
TL;DR: The carbonic anhydrase from bovine erythrocytes was employed as a model enzyme for structural studies in an aqueous phase at alkaline pH, which is typical of large-scale absorption processes under operation and showed a high enzymatic stability at pH 10 with a prominent decrease of the melting temperature above this value.
Journal ArticleDOI
Mechanisms of amino acid partitioning in cationic reversed micelles
M. Margarida Cardoso,Mário João Barradas,Manuel J.T. Carrondo,Karl Heinz Kroner,João G. Crespo +4 more
TL;DR: It was found that solubilization of hydrophilic and slightly hydrophobic amino acids can be described by an ion-exchange mechanism and the amino acid equilibrium concentration can be bedetermined for different experimental conditions using this model.