1
|
Dahl M, Gommes CJ, Haverkamp R, Wood K, Prévost S, Schröer P, Omasta T, Stank TJ, Hellweg T, Wellert S. Confinement induced change of microemulsion phase structure in controlled pore glass (CPG) monoliths. RSC Adv 2024; 14:28272-28284. [PMID: 39239284 PMCID: PMC11372560 DOI: 10.1039/d4ra04090b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Accepted: 08/26/2024] [Indexed: 09/07/2024] Open
Abstract
We use small-angle neutron scattering (SANS) to investigate the structure and phase behavior of a complex fluid within meso- and macroporous matrices. Specifically, bicontinuous microemulsions of the temperature-dependent ternary system C10E4-water-n-octane are investigated in controlled pore glass (CPG) membranes with nominal pore diameters of 10 nm, 20 nm, 50 nm, and 100 nm. The scattering data were analyzed using the Teubner-Strey model and a multiphase generalization of clipped Gaussian-field models. The analysis indicates changes in the phase structure of the bicontinuous microemulsion in the membranes with the smallest pores. This is attributed to a shift in the ternary phase diagram toward a three-phase structure at lower surfactant concentrations. This effect is likely related to a larger internal surface area in the membranes with smaller pores, which enhances surfactant adsorption onto the pore walls.
Collapse
Affiliation(s)
- Margarethe Dahl
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| | - Cedric J Gommes
- Department of Chemical Engineering, University of Liège B6 A 3 Allée du 6 Août B-4000 Liège Belgium
| | - René Haverkamp
- Department of Physical and Biophysical Chemistry, University of Bielefeld, Universitätsstraße 25 33615 Bielefeld Germany
| | - Kathleen Wood
- Australian Nuclear and Technology Organisation New Illawarra Rd Lucas Heights NSW 2234 Australia
| | - Sylvain Prévost
- Institut Laue-Langevin 71 Avenue des Martyrs F-38042 Grenoble France
| | - Pierre Schröer
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| | - Tomáš Omasta
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| | - Tim Julian Stank
- Department of Physical and Biophysical Chemistry, University of Bielefeld, Universitätsstraße 25 33615 Bielefeld Germany
| | - Thomas Hellweg
- Department of Physical and Biophysical Chemistry, University of Bielefeld, Universitätsstraße 25 33615 Bielefeld Germany
| | - Stefan Wellert
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| |
Collapse
|
2
|
Moon H, Heller WT, Osti NC, Song M, Proaño L, Vaghefi I, Jones CW. Probing the Distribution and Mobility of Aminopolymers after Multiple Sorption-Regeneration Cycles: Neutron Scattering Studies. Ind Eng Chem Res 2024; 63:15100-15112. [PMID: 39220859 PMCID: PMC11363015 DOI: 10.1021/acs.iecr.4c01595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/30/2024] [Accepted: 08/04/2024] [Indexed: 09/04/2024]
Abstract
Solid-supported amines are effective CO2 adsorbents capable of capturing CO2 from flue gas streams (10-15 vol % CO2) and from ultradilute streams, such as ambient air (∼400 ppm CO2). Amine sorbents have demonstrated promising performance (e.g., high CO2 uptake and uptake rates) with stable characteristics under repeated, idealized thermal swing conditions, enabling multicycle application. Literature studies suggest that solid-supported amines such as PEI/SBA-15 generally exhibit slowly reducing CO2 uptake rates or capacities over repeated thermal swing capture-regeneration cycles under simulated DAC conditions. While there are experimental reports describing changes in supported amine mass, degradation of amine sites, and changes in support structures over cycling, there is limited knowledge about the structure and mobility of the amine domains in the support pores over extended use. Furthermore, little is known about the effects of H2O on cyclic applications of PEI/SBA-15 despite the inevitable presence of H2O in ambient air. Here, we present a series of neutron scattering studies exploring the distribution and mobility of PEI in mesoporous silica SBA-15 as a function of thermal cycling and cyclic conditions. Small-angle neutron scattering (SANS) and quasielastic neutron scattering (QENS) are used to study the amine and H2O distributions and amine mobility, respectively. Applying repeated thermal swings under dry conditions leads to the thorough removal of water from the sorbent, causing thinner and more rigid wall-coating PEI layers that eventually lead to slower CO2 uptake rates. On the other hand, wet cyclic conditions led to the sorption of atmospheric water at the wall-PEI interfaces. When PEI remains hydrated, the amine distribution (i.e., wall-coating PEI layer thickness) is retained over cycling, while lubrication effects of water yield improved PEI mobility, in turn leading to faster CO2 uptake rates.
Collapse
Affiliation(s)
- Hyun
June Moon
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - William T. Heller
- Neutron
Scattering Division, Oak Ridge National
Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Naresh C. Osti
- Neutron
Scattering Division, Oak Ridge National
Laboratory, Oak Ridge, Tennessee 37831, United States
| | - MinGyu Song
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Laura Proaño
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ida Vaghefi
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Christopher W. Jones
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| |
Collapse
|
3
|
Moon HJ, Carrillo JMY, Song M, Rim G, Heller WT, Leisen J, Proaño L, Short GN, Banerjee S, Sumpter BG, Jones CW. Underlying Roles of Polyol Additives in Promoting CO 2 Capture in PEI/Silica Adsorbents. CHEMSUSCHEM 2024:e202400967. [PMID: 38830830 DOI: 10.1002/cssc.202400967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
Solid-supported amines having low molecular weight branched poly(ethylenimine) (PEI) physically impregnated into porous solid supports are promising adsorbents for CO2 capture. Co-impregnating short-chain poly(ethylene glycol) (PEG) together with PEI alters the performance of the adsorbent, delivering improved amine efficiency (AE, mol CO2 sorbed/mol N) and faster CO2 uptake rates. To uncover the physical basis for this improved gas capture performance, we probe the distribution and mobility of the polymers in the pores via small angle neutron scattering (SANS), solid-state NMR, and molecular dynamic (MD) simulation studies. SANS and MD simulations reveal that PEG displaces wall-bound PEI, making amines more accessible for CO2 sorption. Solid-state NMR and MD simulation suggest intercalation of PEG into PEI domains, separating PEI domains and reducing amine-amine interactions, providing potential PEG-rich and amine-poor interfacial domains that bind CO2 weakly via physisorption while providing facile pathways for CO2 diffusion. Contrary to a prior literature hypothesis, no evidence is obtained for PEG facilitating PEI mobility in solid supports. Instead, the data suggest that PEG chains coordinate to PEI, forming larger bodies with reduced mobility compared to PEI alone. We also demonstrate promising CO2 uptake and desorption kinetics at varied temperatures, facilitated by favorable amine distribution.
Collapse
Affiliation(s)
- Hyun June Moon
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Jan-Michael Y Carrillo
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37380, USA
| | - MinGyu Song
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Guanhe Rim
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - William T Heller
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Johannes Leisen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Laura Proaño
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Gabriel N Short
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Sayan Banerjee
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Bobby G Sumpter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37380, USA
| | - Christopher W Jones
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| |
Collapse
|
4
|
Haverkamp R, Dahl M, Stank TJ, Hübner J, Strasser P, Wellert S, Hellweg T. Confined microemulsions: pore diameter induced change of the phase behavior. RSC Adv 2024; 14:12735-12741. [PMID: 38645522 PMCID: PMC11027042 DOI: 10.1039/d4ra01283f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/07/2024] [Indexed: 04/23/2024] Open
Abstract
In the present work, the temperature-dependent phase behavior of a C10E4 based microemulsion is studied in different meso-macroporous glasses, as a function of their pore diameter. The phase behavior in these pores is investigated by small-angle X-ray scattering (SAXS). The crucial parameter we discuss based on the SAXS results is the domain size of the bicontinuous phase. Using a simplified model to fit the scattering data, we can observe the microemulsion inside the pores. These experiments reveal a temperature-dependent change in domain sizes of the bicontinuous microemulsion only for large pores.
Collapse
Affiliation(s)
- René Haverkamp
- Department of Physical and Biophysical Chemistry, University of Bielefeld Universitätsstraße 25 Bielefeld 33615 Germany
| | - Margarethe Dahl
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technical University of Berlin Straße des 17. Juni 124 Berlin 10623 Germany
| | - Tim Julian Stank
- Department of Physical and Biophysical Chemistry, University of Bielefeld Universitätsstraße 25 Bielefeld 33615 Germany
| | - Jessica Hübner
- Department of Chemistry, Chemical Engineering Division, Technical University of Berlin Straße des 17. Juni 124 Berlin 10623 Germany
| | - Peter Strasser
- Department of Chemistry, Chemical Engineering Division, Technical University of Berlin Straße des 17. Juni 124 Berlin 10623 Germany
| | - Stefan Wellert
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technical University of Berlin Straße des 17. Juni 124 Berlin 10623 Germany
| | - Thomas Hellweg
- Department of Physical and Biophysical Chemistry, University of Bielefeld Universitätsstraße 25 Bielefeld 33615 Germany
| |
Collapse
|
5
|
Aizawa M, Iwase H, Kamijo T, Yamaguchi A. Protein Condensation at Nanopore Entrances as Studied by Differential Scanning Calorimetry and Small-Angle Neutron Scattering. J Phys Chem Lett 2022; 13:8684-8691. [PMID: 36094403 DOI: 10.1021/acs.jpclett.2c01708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The condensation of globular myoglobin (Mb) at the pore entrances of mesoporous silica (MPS) with a series of pore diameters (4.2, 6.4, 7.7, and 9.0 nm) was examined by differential scanning calorimetry (DSC) and contrast-matching small-angle neutron scattering (CM-SANS) experiments. The DSC measurements were performed to estimate the amount of Mb adsorbed at two different adsorption sites, namely, the pore interior and the pore entrance regions. The CM-SANS measurements were conducted to observe condensation of Mb molecules at the pore entrance regions. Notably, the nanopore entrance with a diameter close to twice that of the Mb diameter was found to be the specific cavity to facilitate the condensation of globular Mb. The Mb condensation occurred at the entrances of the 6.4 nm pore during the adsorption uptake from concentrated Mb solutions, whereas the adsorption uptake from diluted Mb solutions induced the condensation of Mb at the entrances of the 7.7 nm pore.
Collapse
Affiliation(s)
- Mami Aizawa
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Hiroki Iwase
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - Toshio Kamijo
- Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| |
Collapse
|
6
|
Prause A, Hechenbichler M, von Lospichl B, Feoktystov A, Schweins R, Mahmoudi N, Laschewsky A, Gradzielski M. Aggregation Behavior of Nonsymmetrically End-Capped Thermoresponsive Block Copolymers in Aqueous Solutions: Between Polymer Coils and Micellar States. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Albert Prause
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Michelle Hechenbichler
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Straße 24−25, 14476 Potsdam, Germany
| | - Benjamin von Lospichl
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Artem Feoktystov
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Ralf Schweins
- Institut Laue−Langevin, DS/LSS, 71 Avenue des Martyrs, CS 20 156, F-38042 Grenoble Cedex 9, France
| | - Najet Mahmoudi
- ISIS Facility, STFC, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, U.K
| | - André Laschewsky
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Straße 24−25, 14476 Potsdam, Germany
- Fraunhofer Institute of Applied Polymer Research IAP, Geiselbergstraße 69, 14476 Potsdam, Germany
| | - Michael Gradzielski
- FG Physical Chemistry/Molecular Material Science, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| |
Collapse
|
7
|
Schoen M, Evans R, Gubbins KE, Rabe JP, Thommes M, Jackson G. Gerhard Findenegg (1938–2019). Mol Phys 2021. [DOI: 10.1080/00268976.2021.1953272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Martin Schoen
- Technische Universität Berlin, Fakultät für Mathematik und Naturwissenschaften, Berlin, Germany
| | - Robert Evans
- H. H. Wills Physics Laboratory, University of Bristol, Bristol, UK
| | - Keith E. Gubbins
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Jürgen P. Rabe
- Department of Physics & IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Matthias Thommes
- Department of Chemical and Bioeengineering, Institute of Separation Science and Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - George Jackson
- Department of Chemical Engineering, Imperial College London, London, UK
| |
Collapse
|