Bibiana Comesaña-Gándara

Dr. Bibiana Comesaña-Gándara

Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina s/n., 47011 Valladolid, Spain
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Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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23 July 2019 in Energy & Environmental Science
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Bibiana Comesaña-GándaraBibiana Comesaña-Gándara
Bibiana Comesaña-Gándara
JCJie Chen
Jie Chen
CBC. Grazia Bezzu
C. Grazia Bezzu
Mariolino CartaMariolino Carta
Mariolino Carta
IRIan Rose
Ian Rose
NMNeil B. McKeown
Neil B. McKeown
Ultrapermeable benzotriptycene-based PIMs show exceptional gas selectivities that define new positions for the CO 2 /CH 4 and CO 2 /N 2 Robeson upper bounds.

31 July 2017 in Nature Materials
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Journal Article
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IRIan Rose
Ian Rose
CBC. Grazia Bezzu
C. Grazia Bezzu
Mariolino CartaMariolino Carta
Mariolino Carta
Bibiana Comesaña-GándaraBibiana Comesaña-Gándara
Bibiana Comesaña-Gándara
Elsa LasseuguetteElsa Lasseuguette
Elsa Lasseuguette
NMNeil B. McKeown
Neil B. McKeown
The promise of ultrapermeable polymers, such as poly(trimethylsilylpropyne) (PTMSP), for reducing the size and increasing the efficiency of membranes for gas separations remains unfulfilled due to their poor selectivity. We report an ultrapermeable polymer of intrinsic microporosity (PIM-TMN-Trip) that is substantially more selective than PTMSP. From molecular simulations and experimental measurement we find that the inefficient packing of the two-dimensional (2D) chains of PIM-TMN-Trip generates a high concentration of both small (<0.7 nm) and large (0.7-1.0 nm) micropores, the former enhancing selectivity and the latter permeability. Gas permeability data for PIM-TMN-Trip surpass the 2008 Robeson upper bounds for O2/N2, H2/N2, CO2/N2, H2/CH4 and CO2/CH4, with the potential for biogas purification and carbon capture demonstrated for relevant gas mixtures. Comparisons between PIM-TMN-Trip and structurally similar polymers with three-dimensional (3D) contorted chains confirm that its additional intrinsic microporosity is generated from the awkward packing of its 2D polymer chains in a 3D amorphous solid. This strategy of shape-directed packing of chains of microporous polymers may be applied to other rigid polymers for gas separations.

14 August 2019 in Journal of Materials Chemistry A
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Alessio FuocoAlessio Fuoco
Alessio Fuoco
Carmen RizzutoCarmen Rizzuto
Carmen Rizzuto
Elena TocciElena Tocci
Elena Tocci
Marcello MonteleoneMarcello Monteleone
Marcello Monteleone
Elisa EspositoElisa Esposito
Elisa Esposito
Johannes Carolus JansenJohannes Carolus Jansen
Johannes Carolus Jansen
Polymers of intrinsic microporosity (PIMs) are distinguished from other polymers in how the diffusion coefficients for light gases depend on their effective size, with a stronger size-selective trend for gases larger than He and H 2 .

1 January 2014 in Journal of Membrane Science
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Bibiana Comesaña-GándaraBibiana Comesaña-Gándara
Bibiana Comesaña-Gándara
MCMariola Calle
Mariola Calle
HJHye Jin Jo
Hye Jin Jo
AHAntonio Hernandez
Antonio Hernandez
JCJose G. de la Campa
Jose G. de la Campa
Yong-Moon LeeYong-Moon Lee
Yong-Moon Lee

28 September 2018 in ACS Applied Materials & Interfaces
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Journal Article
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Alessio FuocoAlessio Fuoco
Alessio Fuoco
Bibiana Comesaña-GándaraBibiana Comesaña-Gándara
Bibiana Comesaña-Gándara
Mariagiulia LongoMariagiulia Longo
Mariagiulia Longo
Elisa EspositoElisa Esposito
Elisa Esposito
Marcello MonteleoneMarcello Monteleone
Marcello Monteleone
Johannes Carolus JansenJohannes Carolus Jansen
Johannes Carolus Jansen
A detailed analysis of the basic transport parameters of two triptycene-based polymers of intrinsic microporosity (PIMs), the ultrapermeable PIM-TMN-Trip and the more selective PIM-BTrip, as a function of temperature from 25°C to 55°C, is reported. For both PIMs, high permeability is based on very high diffusion and solubility coefficients. The contribution of these two factors on the overall permeability is affected by the temperature and depends on the pene-trant dimensions. Energetic parameters of permeability, diffusivity and solubility are calculated using Arrhenius-van’t Hoff equations and compared with those of the archetypal PIM-1 and the ultrapermeable but poorly selective poly(trimethylsilylpropyne) (PTMSP). This considers, for the first time, the role of entropic and energetic selectivities in the diffusion process through highly rigid PIMs. This analysis demonstrates how energetic selectivity dominates the gas transport properties of the highly rigid triptycene PIMs and enhances the strong size-sieving character of these ultrapermeable polymers.

20 November 2019 in Industrial & Engineering Chemistry Research
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Journal Article
Closed access
MLMariagiulia Longo
Mariagiulia Longo
MSMaria Penelope De Santo
Maria Penelope De Santo
Elisa EspositoElisa Esposito
Elisa Esposito
Alessio FuocoAlessio Fuoco
Alessio Fuoco
Marcello MonteleoneMarcello Monteleone
Marcello Monteleone
Johannes Carolus JansenJohannes Carolus Jansen
Johannes Carolus Jansen