1
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Kollias L, Cantu DC, Glezakou V, Rousseau R, Salvalaglio M. On the Role of Enthalpic and Entropic Contributions to the Conformational Free Energy Landscape of MIL‐101(Cr) Secondary Building Units. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.202000092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Loukas Kollias
- Thomas Young Centre and Department of Chemical Engineering University College London London WC1E 7JE UK
| | - David C. Cantu
- Chemical and Materials Engineering Department University of Nevada Reno Reno NV 89557 USA
| | | | - Roger Rousseau
- Basic and Applied Molecular Foundations Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Matteo Salvalaglio
- Thomas Young Centre and Department of Chemical Engineering University College London London WC1E 7JE UK
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2
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Ponraj YK, Borah B. Separation of methane from ethane and propane by selective adsorption and diffusion in MOF Cu-BTC: A molecular simulation study. J Mol Graph Model 2020; 97:107574. [DOI: 10.1016/j.jmgm.2020.107574] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 11/15/2022]
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3
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Solanki VA, Borah B. Ranking of Metal–Organic Frameworks (MOFs) for Separation of Hexane Isomers by Selective Adsorption. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03533] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Viral A. Solanki
- P. D. Patel Institute of Applied Sciences, Charotar University of Science & Technology, Changa, Anand, Gujarat − 388421, India
| | - Bhaskarjyoti Borah
- P. D. Patel Institute of Applied Sciences, Charotar University of Science & Technology, Changa, Anand, Gujarat − 388421, India
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4
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Metal-organic framework MIL-53(Cr) as a superior adsorbent: Highly efficient separation of xylene isomers in liquid phase. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.04.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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In situ self-transformation metal into metal-organic framework membrane for solid-phase microextraction of polycyclic aromatic hydrocarbons. Talanta 2019; 202:145-151. [DOI: 10.1016/j.talanta.2019.04.063] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 12/22/2022]
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6
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Martin‐Calvo A, Gutierrez‐Sevillano JJ, Dubbeldam D, Calero S. Using Aliphatic Alcohols to Tune Benzene Adsorption in MAF‐6. ADVANCED THEORY AND SIMULATIONS 2019. [DOI: 10.1002/adts.201900112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ana Martin‐Calvo
- Department of PhysicalChemical and Natural SystemsUniversity Pablo de Olavide Sevilla 41013 Spain
| | | | - David Dubbeldam
- Van't Hoff Institute for Molecular SciencesUniversity of Amsterdam Amsterdam 1090 GD The Netherlands
| | - Sofia Calero
- Department of PhysicalChemical and Natural SystemsUniversity Pablo de Olavide Sevilla 41013 Spain
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7
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Krishna R. Elucidation and characterization of entropy effects in mixture separations with micro-porous crystalline adsorbents. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.01.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Abstract
Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans have learnt pretty well how to make ordered empty nanocontainers, and to get useful products out of them. When such an order is imparted to molecules, new properties may appear, often yielding advanced applications. This review illustrates how the organized void space inherently present in various materials: zeolites, clathrates, mesoporous silica/organosilica, and metal organic frameworks (MOF), for example, can be exploited to create confined, organized, and self-assembled supramolecular structures of low dimensionality. Features of the confining matrices relevant to organization are presented with special focus on molecular-level aspects. Selected examples of confined supramolecular assemblies - from small molecules to quantum dots or luminescent species - are aimed to show the complexity and potential of this approach. Natural confinement (minerals) and hyperconfinement (high pressure) provide further opportunities to understand and master the atomistic-level interactions governing supramolecular organization under nanospace restrictions.
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Affiliation(s)
- Gloria Tabacchi
- Department of Science and High Technology, University of Insubria, Via Valleggio, 9 I-22100, Como, Italy
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9
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Matito-Martos I, Rahbari A, Martin-Calvo A, Dubbeldam D, Vlugt TJH, Calero S. Adsorption equilibrium of nitrogen dioxide in porous materials. Phys Chem Chem Phys 2018; 20:4189-4199. [PMID: 29362749 DOI: 10.1039/c7cp08017d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of confinement on the equilibrium reactive system containing nitrogen dioxide and dinitrogen tetroxide is studied by molecular simulation and the reactive Monte Carlo (RxMC) approach. The bulk-phase reaction was successfully reproduced and five all-silica zeolites (i.e. FAU, FER, MFI, MOR, and TON) with different topologies were selected to study their adoption behavior. Dinitrogen tetroxide showed a stronger affinity than nitrogen dioxide in all the zeolites due to size effects, but exclusive adsorption sites in MOR allowed the adsorption of nitrogen dioxide with no competition at these sites. From the study of the adsorption isotherms and isobars of the reacting mixture, confinement enhanced the formation of dimers over the full range of pressure and temperature, finding the largest deviations from bulk fractions at low temperature and high pressure. The channel size and shape of the zeolite have a noticeable influence on the dinitrogen tetroxide formation, being more important in MFI, closely followed by TON and MOR, and finally FER and FAU. Preferential adsorption sites in MOR lead to an unusually strong selective adsorption towards nitrogen dioxide, demonstrating that the topological structure has a crucial influence on the composition of the mixture and must be carefully considered in systems containing nitrogen dioxide.
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Affiliation(s)
- I Matito-Martos
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Sevilla 41013, Spain.
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10
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Krishna R, van Baten JM. Commensurate-incommensurate adsorption and diffusion in ordered crystalline microporous materials. Phys Chem Chem Phys 2018; 19:20320-20337. [PMID: 28752882 DOI: 10.1039/c7cp04101b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For homologous series of linear chain molecules, there could be either a match, or mismatch, between the characteristic periodicity of the host structure and the characteristic length of the guest molecules. The major objective of this article is to highlight the influence of commensurateness, or incommensurateness, on both the adsorption and diffusion characteristics. Published experimental data, backed by molecular simulation results, are used to highlight the attendant non-monotonicity in adsorption strengths and diffusivities. We demonstrate the possibility of separating mixtures of n-alkanes, n-alcohols, and hydrocarbon isomers by appropriate and judicious choice of the dimensions, topology, and connectivity of the crystalline host material. Of particular practical interest are entropy-based separations that manifest at pore saturation conditions, relying on differences in the saturation capacities of the constituent species; the exploiting of such entropy effects is discussed with the aid of several examples.
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Affiliation(s)
- Rajamani Krishna
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
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11
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Dubbeldam D, Calero S, Vlugt TJ. iRASPA: GPU-accelerated visualization software for materials scientists. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1426855] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- David Dubbeldam
- Van ’t Hoff Institute of Molecular Sciences, University of Amsterdam, Science Park, The Netherlands
- Process & Energy Department, Delft University of Technology, Delft, The Netherlands
| | - Sofía Calero
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Sevilla, Spain
| | - Thijs J.H. Vlugt
- Process & Energy Department, Delft University of Technology, Delft, The Netherlands
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12
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Yang Y, Bai P, Guo X. Separation of Xylene Isomers: A Review of Recent Advances in Materials. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03127] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuxi Yang
- Department of Pharmaceutical
Engineering, School of Chemical Engineering and Technology, and Key Laboratory of Systems Bioengineering, Ministry
of Education, Tianjin University, Tianjin 300350, China
| | - Peng Bai
- Department of Pharmaceutical
Engineering, School of Chemical Engineering and Technology, and Key Laboratory of Systems Bioengineering, Ministry
of Education, Tianjin University, Tianjin 300350, China
| | - Xianghai Guo
- Department of Pharmaceutical
Engineering, School of Chemical Engineering and Technology, and Key Laboratory of Systems Bioengineering, Ministry
of Education, Tianjin University, Tianjin 300350, China
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13
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Torres-Knoop A, Poursaeidesfahani A, Vlugt TJH, Dubbeldam D. Behavior of the Enthalpy of Adsorption in Nanoporous Materials Close to Saturation Conditions. J Chem Theory Comput 2017; 13:3326-3339. [PMID: 28521093 PMCID: PMC5508337 DOI: 10.1021/acs.jctc.6b01193] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
![]()
Many
important industrial separation processes based on adsorption
operate close to saturation. In this regime, the underlying adsorption
processes are mostly driven by entropic forces. At equilibrium, the
entropy of adsorption is closely related to the enthalpy of adsorption.
Thus, studying the behavior of the enthalpy of adsorption as a function
of loading is fundamental to understanding separation processes. Unfortunately,
close to saturation, the enthalpy of adsorption is hard to measure
experimentally and hard to compute in simulations. In simulations,
the enthalpy of adsorption is usually obtained from energy/particle
fluctuations in the grand-canonical ensemble, but this methodology
is hampered by vanishing insertions/deletions at high loading. To
investigate the fundamental behavior of the enthalpy and entropy of
adsorption at high loading, we develop a simplistic model of adsorption
in a channel and show that at saturation the enthalpy of adsorption
diverges to large positive values due to repulsive intermolecular
interactions. However, there are many systems that can avoid repulsive
intermolecular interactions and hence do not show this drastic increase
in enthalpy of adsorption close to saturation. We find that the conventional
grand-canonical Monte Carlo method is incapable of determining the
enthalpy of adsorption from energy/particle fluctuations at high loading.
Here, we show that by using the continuous fractional component Monte
Carlo, the enthalpy of adsorption close to saturation conditions can
be reliably obtained from the energy/particle fluctuations in the
grand-canonical ensemble. The best method to study properties at saturation
is the NVT energy (local-) slope methodology.
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Affiliation(s)
- Ariana Torres-Knoop
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam , Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Ali Poursaeidesfahani
- Delft University of Technology , Process & Energy Department, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Thijs J H Vlugt
- Delft University of Technology , Process & Energy Department, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - David Dubbeldam
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam , Science Park 904, 1098XH Amsterdam, The Netherlands
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14
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Abstract
The development of new synthetic routes from biomass sources towards already existing molecules, which are then called bio-based molecules, or the transformation of biomass into new building blocks and materials will be of great impact. This review presents a critical comparison between MOFs and other catalysts (e.g. zeolites) for biomass transformation.
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Affiliation(s)
- Annika Herbst
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
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15
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Nguyen CK, Nguyen NB, Chu ON, Dang HV, Nguyen TT, Phan NTS. A direct strategy to synthesize hybrid benzothiazole–carbamate moieties via O-acylation of phenols under metal–organic framework catalysis. REACT CHEM ENG 2017. [DOI: 10.1039/c7re00067g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu-CPO-27 was used as an efficient recyclable catalyst for the synthesis of benzothiazole–carbamate structures.
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Affiliation(s)
- Chung K. Nguyen
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Nguyen B. Nguyen
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Oanh N. Chu
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Ha V. Dang
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Tung T. Nguyen
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Nam T. S. Phan
- Faculty of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
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16
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cif2tube – Algorithm for constructing nanotube and nanoscroll models from crystallographic information files. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.08.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Heinen J, Dubbeldam D. Understanding and solving disorder in the substitution pattern of amino functionalized MIL-47(V). Dalton Trans 2016; 45:4309-15. [DOI: 10.1039/c5dt03399c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electronic energies and elastic constants of four amino functionalized MIL-47(V) supercells were computed using the plane wave density functional theory to determine the influence of the substituent positions on the organic linker.
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Affiliation(s)
- Jurn Heinen
- Van't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - David Dubbeldam
- Van't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
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18
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Burtch NC, Walton KS. Modulating adsorption and stability properties in pillared metal-organic frameworks: a model system for understanding ligand effects. Acc Chem Res 2015; 48:2850-7. [PMID: 26529060 DOI: 10.1021/acs.accounts.5b00311] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Metal-organic frameworks (MOFs) are nanoporous materials with highly tunable properties that make them ideal for a wide array of adsorption applications. Through careful choice of metal and ligand precursors, one can target the specific functionality and pore characteristics desired for the application of interest. However, among the wide array of MOFs reported in the literature, there are varying trends in the effects that ligand identity has on the adsorption, chemical stability, and intrinsic framework dynamics of the material. This is largely due to ligand effects being strongly coupled with structural properties arising from the differing topologies among frameworks. Given the important role such properties play in dictating adsorbent performance, understanding these effects will be critical for the design of next generation functional materials. Pillared MOFs are ideal platforms for understanding how ligand properties can affect the adsorption, stability, and framework dynamics in MOFs. In this Account, we highlight our recent work demonstrating how experiment and simulation can be used to understand the important role ligand identity plays in governing the properties of isostructural MOFs containing interconnected layers pillared by bridging ligands. Changing the identity of the linear, ditopic ligand in either the 2-D layer or the pillaring third dimension allows targeted modulation of the chemical functionality, porosity, and interpenetration of the framework. We will discuss how these characteristics can have important consequences on the adsorption, chemical stability, and dynamic properties of pillared MOFs. The structures discussed in this Account comprise the greatest diversity of isostructural MOFs whose stability properties have been studied, allowing valuable insight into how ligand properties dictate the chemical stability of isostructural frameworks. We also discuss how functional groups can affect adsorbate energetics at their most favorable adsorption sites to elucidate how functional groups can affect the adsorptive performance of these materials in ways that are unexpected based on the isolated ligand's properties. We then highlight a variety of simulation tools that not only can be used to understand the differing molecular-level behavior of the adsorbate and framework dynamics within these isostructural MOFs, but also can shed light on possible mechanisms that govern the differing chemical stability properties among these materials. Lastly, we provide perspective on the challenges and opportunities for utilizing the structure-property relationships arising from the ligand effects described in this Account for the design of further MOFs with enhanced chemical stability and adsorption properties.
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Affiliation(s)
- Nicholas C. Burtch
- School
of Chemical and Biomolecular
Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Krista S. Walton
- School
of Chemical and Biomolecular
Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, United States
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