Articles producció científica> Química Analítica i Química Orgànica

Readily regenerable amine-free CO2 sorbent based on a solid-supported carboxylate ionic liquid

  • Identification data

    Identifier: imarina:9291948
  • Authors:

    Yousefe, M
    Ursano, B
    Puga, A
    Reina, JA
  • Others:

    Author, as appears in the article.: Yousefe, M; Ursano, B; Puga, A; Reina, JA
    Department: Enginyeria Química Química Analítica i Química Orgànica
    URV's Author/s: Puga Vaca, Alberto / Reina Lozano, José Antonio / Yousefe, Mohammad
    Keywords: Regeneration energy Kinetics Ionic liquids Climate change Carbon-dioxide capture Carbon dioxide capture Absorption water temperature regeneration energy performance kinetics ionic liquids climate change chemisorption carbon dioxide capture adsorbents acetate absorption
    Abstract: Accumulation of anthropogenic CO2 is undoubtedly the major cause of global warming. In addition to reducing emissions, minimising the threatening effects of climate change in the near future might also require the capture of enormous amounts of CO2 from point sources or from the atmosphere. In this regard, the development of novel affordable and energetically attainable capture technologies is greatly needed. In this work, we report rapid and greatly facilitated CO2 desorption for amine-free carboxylate ionic liquid hydrates as compared to a benchmark amine-based sorbent. Complete regeneration was achieved at moderate temperature (60 °C) over short capture-release cycles using model flue gas on a silica-supported tetrabutylphosphonium acetate ionic liquid hydrate (IL/SiO2), whereas the polyethyleneimine counterpart (PEI/SiO2) only recovered half its capacity after the first cycle in a rather sluggish release process under the same conditions. The IL/SiO2 sorbent achieved a slightly superior working CO2 capacity than PEI/SiO2. The easier regeneration of carboxylate ionic liquid hydrates, which behave as chemical CO2 sorbents leading to bicarbonate in a 1:1 stoichiometry, is due to their relatively low sorption enthalpies (≈40 kJ mol-1). The faster and more efficient desorption from IL/SiO2 fits a first-order kinetic model (k = 0.73 min-1), whereas a more complex process was observed for PEI/SiO2 (pseudo-first order initially, k = 0.11 min-1, pseudo-zero order at later stages). The remarkably low regeneration temperature, the absence of amines and the non-volatility of the IL sorbent are favourable assets to minimise gaseous stream contamination. Importantly, regeneration heats -a crucial parameter for practical application- are advantageous for IL/SiO2 (4.3 kJ g (CO2)-1) vs. PEI/SiO2, and fall within the range of typical amine sorbents indicating a remarkable performance at this proof-of-concept stage. Further structural design will enhance the viability of amine-free ionic liquid hydrates for carbon capture technologies.Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.
    Thematic Areas: Zootecnia / recursos pesqueiros Waste management and disposal Saúde coletiva Química Psicología Planejamento urbano e regional / demografia Medicine (miscellaneous) Medicina veterinaria Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Management, monitoring, policy and law Interdisciplinar Geografía Geociências General medicine Farmacia Environmental sciences Environmental engineering Ensino Engenharias iii Engenharias ii Engenharias i Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Biodiversidade Astronomia / física Arquitetura e urbanismo Administração pública e de empresas, ciências contábeis e turismo
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: mohammad.yousefe@urv.cat mohammad.yousefe@urv.cat alberto.puga@urv.cat joseantonio.reina@urv.cat
    Author identifier: 0000-0003-4201-2635 0000-0002-9245-4135
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0301479723002578
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Journal Of Environmental Management. 334 117469-117469
    APA: Yousefe, M; Ursano, B; Puga, A; Reina, JA (2023). Readily regenerable amine-free CO2 sorbent based on a solid-supported carboxylate ionic liquid. Journal Of Environmental Management, 334(), 117469-117469. DOI: 10.1016/j.jenvman.2023.117469
    Article's DOI: 10.1016/j.jenvman.2023.117469
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Environmental Engineering,Environmental Sciences,Management, Monitoring, Policy and Law,Medicine (Miscellaneous),Waste Management and Disposal
    Regeneration energy
    Kinetics
    Ionic liquids
    Climate change
    Carbon-dioxide capture
    Carbon dioxide capture
    Absorption
    water
    temperature
    regeneration energy
    performance
    kinetics
    ionic liquids
    climate change
    chemisorption
    carbon dioxide capture
    adsorbents
    acetate
    absorption
    Zootecnia / recursos pesqueiros
    Waste management and disposal
    Saúde coletiva
    Química
    Psicología
    Planejamento urbano e regional / demografia
    Medicine (miscellaneous)
    Medicina veterinaria
    Medicina ii
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Management, monitoring, policy and law
    Interdisciplinar
    Geografía
    Geociências
    General medicine
    Farmacia
    Environmental sciences
    Environmental engineering
    Ensino
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Biotecnología
    Biodiversidade
    Astronomia / física
    Arquitetura e urbanismo
    Administração pública e de empresas, ciências contábeis e turismo
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