Thomas Koller
Dr.-Ing. habil. Thomas M. Koller
Research focus of the group “Thermophysical Properties of Multiphase Systems in Process Engineering”
Research activities of the group focus on the characterization of multiphase systems relevant in process engineering via the determination of their thermophysical properties. The main interest is directed towards the study of interfaces. Objects of investigation are multiphase systems in form of vapor-liquid systems where, e.g., liquid organic hydrogen carriers are of current interest, liquid-liquid systems with partially miscible liquid phases, and dispersions of solid or liquid particles in a continuous liquid phase. For obtaining reliable information about the thermophysical properties of related systems including interfacial tension, viscosity, or thermal conductivity and for developing relations with the fluid structure on a microscopic level, advanced experimental and modeling techniques are applied and further developed.
Publications:
2024
Effective thermal conductivity, effective viscosity, and particle diffusion coefficient of microemulsions consisting of water, n-decane, and a non-ionic surfactant in different regions of the phase diagram
In: International Journal of Heat and Mass Transfer 232 (2024), Article No.: 125901
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2024.125901
Thermal Conductivity of Glycerol at Atmospheric Pressure Between 268 K and 363 K by Using a Steady-State Parallel-Plate Instrument
In: International Journal of Thermophysics 45 (2024), Article No.: 52
ISSN: 0195-928X
DOI: 10.1007/s10765-024-03347-x
Thermal Conductivity of Liquid Cyclohexane, n-Decane, n-Hexadecane, and Squalane at Atmospheric Pressure up to 353 K Determined with a Steady-State Parallel-Plate Instrument
In: International Journal of Thermophysics 45 (2024), Article No.: 93
ISSN: 0195-928X
DOI: 10.1007/s10765-024-03383-7
Liquid Viscosity and Surface Tension of Cyclohexane Between 280 and 473 K by Surface Light Scattering
In: International Journal of Thermophysics 45 (2024), Article No.: 154
ISSN: 0195-928X
DOI: 10.1007/s10765-024-03453-w
Viscosity, Interfacial Tension, and Density of 2-Propanol and Acetone up to 423 K by Surface Light Scattering and Conventional Methods
In: International Journal of Thermophysics 45 (2024), Article No.: 8
ISSN: 0195-928X
DOI: 10.1007/s10765-023-03294-z
Thermophysical properties of the liquid organic hydrogen carrier system based on benzyltoluene considering influences of isomerism and dissolved hydrogen
In: International Journal of Hydrogen Energy 77 (2024), p. 1009-1025
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2024.06.131
Hydrogenation with Dissolved Pt-Complexes Homogenously Distributed in the Ionic Liquid or Enriched at the Gas/Ionic Liquid Interface
In: ChemCatChem 16 (2024), Article No.: e202400574
ISSN: 1867-3880
DOI: 10.1002/cctc.202400574
Dynamic Light Scattering for the Measurement of Transport Properties of Fluids
In: International Journal of Thermophysics 45 (2024), Article No.: 57
ISSN: 0195-928X
DOI: 10.1007/s10765-024-03344-0
Evolution of Surface Tension and Hansen Parameters of a Homologous Series of Imidazolium-Based Ionic Liquids
In: Langmuir 40 (2024), p. 9529 - 9542
ISSN: 0743-7463
DOI: 10.1021/acs.langmuir.4c00094
Influence of molecular hydrogen on bulk and interfacial properties of three imidazolium-based ionic liquids by experiments and molecular dynamics simulations
In: International Journal of Hydrogen Energy 72 (2024), p. 1091-1104
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2024.05.2492023
Effective thermal conductivity of microemulsions consisting of water micelles in n‐decane
In: International Journal of Heat and Mass Transfer 200 (2023), Article No.: 123526
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2022.123526
Guarded Parallel-Plate Instrument for the Determination of the Thermal Conductivity of Gases, Liquids, Solids, and Heterogeneous Systems
In: International Journal of Heat and Mass Transfer 212 (2023), Article No.: 124283
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2023.124283
Thermophysical properties of the liquid organic hydrogen carrier system based on diphenylmethane with the byproducts fluorene or perhydrofluorene
In: International Journal of Hydrogen Energy (2023)
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2023.04.103
Revealing the Effects of Weak Surfactants on the Dynamics of Surface Fluctuations by Surface Light Scattering
In: Journal of Physical Chemistry B 127 (2023), p. 10647-10658
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.3c06309
High-Temperature Measurements on Viscosity and Surface Tension of the Ionic Liquid 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide ([EMIM][NTf2]) up to 473 K
In: International Journal of Thermophysics 44 (2023), Article No.: 118
ISSN: 0195-928X
DOI: 10.1007/s10765-023-03226-x
Influence of dissolved argon or carbon dioxide on the viscosity and surface tension of the imidazolium-based ionic liquids [OMIM][PF6] or [m(PEG2)2IM]I
In: Journal of Molecular Liquids 377 (2023), Article No.: 121491
ISSN: 0167-7322
DOI: 10.1016/j.molliq.2023.121491
Surface tension and viscosity of binary ionic liquid mixtures from high vacuum up to pressures of 10 MPa
In: Journal of Molecular Liquids 386 (2023), Article No.: 122388
ISSN: 0167-7322
DOI: 10.1016/j.molliq.2023.1223882022
Effective Thermal Conductivity of Nanofluids Containing Silicon Dioxide or Zirconium Dioxide Nanoparticles Dispersed in a Mixture of Water and Glycerol
In: International Journal of Thermophysics 43 (2022), Article No.: 167
ISSN: 0195-928X
DOI: 10.1007/s10765-022-03084-z
Viscosity and Surface Tension of High-Viscosity Standard Tris(2-ethylhexyl) Trimellitate Close to 0.1 MPa between 273 and 523 K by Surface Light Scattering
In: Journal of Chemical and Engineering Data 67 (2022), p. 644-660
ISSN: 0021-9568
DOI: 10.1021/acs.jced.1c00946
Viscosity and Surface Tension of Fluorene and Perhydrofluorene Close to 0.1 MPa up to 573 K
In: Journal of Chemical and Engineering Data 67 (2022), p. 3085–3096
ISSN: 0021-9568
DOI: 10.1021/acs.jced.2c00519
Viscosity, surface tension, and density of the liquid organic hydrogen carrier system based on diphenylmethane, biphenyl, and benzophenone
In: International Journal of Hydrogen Energy 47 (2022), p. 22078-22092
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2022.04.275
Viscosity, surface tension, and density of binary mixtures of the liquid organic hydrogen carrier diphenylmethane with benzophenone
In: International Journal of Hydrogen Energy 47 (2022), p. 15789-15806
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2022.03.051
Influence of dissolved hydrogen on the viscosity and interfacial tension of the liquid organic hydrogen carrier system based on diphenylmethane by surface light scattering and molecular dynamics simulations
In: International Journal of Hydrogen Energy 47 (2022), p. 39163-39178
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2022.09.078
Viscosity and Interfacial Tension of Binary Mixtures Consisting of Linear, Branched, Cyclic, or Oxygenated Hydrocarbons with Dissolved Gases Using Surface Light Scattering and Equilibrium Molecular Dynamics Simulations
In: International Journal of Thermophysics 43 (2022), Article No.: 88
ISSN: 0195-928X
DOI: 10.1007/s10765-022-03012-1
Evaluation strategy towards an accurate determination of viscosity and interfacial tension by surface light scattering in presence of line-broadening effects
In: Journal of Colloid and Interface Science 623 (2022), p. 595-606
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2022.05.043
Accurate determination of viscosity and surface tension by surface light scattering in the presence of a contribution from the rotational flow in the bulk of the fluid
In: Journal of Colloid and Interface Science 626 (2022), p. 899-915
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2022.06.129
Effect of the degree of hydrogenation on the viscosity, surface tension, and density of the liquid organic hydrogen carrier system based on diphenylmethane
In: International Journal of Hydrogen Energy 47 (2022), p. 6111-6130
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2021.11.198
Bis-polyethylene glycol-functionalized imidazolium ionic liquids: A multi-method approach towards bulk and surface properties
In: Journal of Ionic Liquids 2 (2022), p. 100041
ISSN: 2772-4220
DOI: 10.1016/j.jil.2022.100041
Combined Surface Light Scattering and Pendant-Drop Experiments for the Determination of Viscosity and Surface Tension of High-Viscosity Fluids Demonstrated for Ionic Liquids
In: International Journal of Thermophysics 43 (2022), Article No.: 178
ISSN: 0195-928X
DOI: 10.1007/s10765-022-03103-z2021
Viscosity and Surface Tension of Benzene at Saturation Conditions from Surface Light Scattering
In: International Journal of Thermophysics 42 (2021), Article No.: 159
ISSN: 0195-928X
DOI: 10.1007/s10765-021-02909-7
Viscosity and Interfacial Tension of Binary Mixtures of n-Hexadecane with Dissolved Gases Using Surface Light Scattering and Equilibrium Molecular Dynamics Simulations
In: Journal of Chemical and Engineering Data 66 (2021), p. 3205-3218
ISSN: 0021-9568
DOI: 10.1021/acs.jced.1c00289
Surface light scattering in reflection geometry: Capabilities and limitations
In: Applied Optics 60 (2021), p. 9042-9053
ISSN: 1559-128X
DOI: 10.1364/AO.440071
Diffusivities in Binary Mixtures of n-Hexane or 1-Hexanol with Dissolved CH4, Ne, Kr, R143a, SF6, or R236fa Close to Infinite Dilution
In: Journal of Chemical and Engineering Data 66 (2021), p. 2218-2232
ISSN: 0021-9568
DOI: 10.1021/acs.jced.1c000842020
Thermal Conductivity of Hydrocarbon Liquid Organic Hydrogen Carrier Systems: Measurement and Prediction
In: Journal of Chemical and Engineering Data 65 (2020), p. 5003-5017
ISSN: 0021-9568
DOI: 10.1021/acs.jced.0c00613
Effective Thermal Conductivity of Nanofluids: Measurement and Prediction
In: International Journal of Thermophysics 41 (2020), Article No.: 55
ISSN: 0195-928X
DOI: 10.1007/s10765-020-2621-2
Thermophysical properties of diphenylmethane and dicyclohexylmethane as a reference liquid organic hydrogen carrier system from experiments and molecular simulations
In: International Journal of Hydrogen Energy 45 (2020), p. 28903-28919
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2020.07.261
Characterization of Long Linear and Branched Alkanes and Alcohols for Temperatures up to 573.15 K by Surface Light Scattering and Molecular Dynamics Simulations
In: Journal of Physical Chemistry B 124 (2020), p. 4146-4163
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.0c01740
Diffusivities in Binary Mixtures of [AMIM][NTf2] Ionic Liquids with the Dissolved Gases H2, He, N2, CO, CO2, or Kr Close to Infinite Dilution
In: Journal of Chemical and Engineering Data 65 (2020), p. 4116–4129
ISSN: 0021-9568
DOI: 10.1021/acs.jced.0c00430
Surface Tension and Viscosity of Binary Mixtures of the Fluorinated and Non-fluorinated Ionic Liquids [PFBMIm][PF6] and [C4C1Im][PF6] by the Pendant Drop Method and Surface Light Scattering
In: International Journal of Thermophysics 41 (2020), Article No.: 144
ISSN: 0195-928X
DOI: 10.1007/s10765-020-02720-w
Mutual and Thermal Diffusivities as Well as Fluid-Phase Equilibria of Mixtures of 1-Hexanol and Carbon Dioxide
In: Journal of Physical Chemistry B 124 (2020), p. 2482-2494
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.0c006462019
Translational and Rotational Diffusion Coefficients of Gold Nanorods Dispersed in Mixtures of Water and Glycerol by Polarized Dynamic Light Scattering
In: Journal of Physical Chemistry B 123 (2019), p. 9491-9502
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.9b08274
Enhancement of the predictive power of molecular dynamics simulations for the determination of self-diffusion coefficient and viscosity demonstrated for propane
In: Fluid Phase Equilibria 496 (2019), p. 69-79
ISSN: 0378-3812
DOI: 10.1016/j.fluid.2019.05.019
Self-diffusion coefficient and viscosity of methane and carbon dioxide via molecular dynamics simulations based on new ab initio-derived force fields
In: Fluid Phase Equilibria 481 (2019), p. 15-27
ISSN: 0378-3812
DOI: 10.1016/j.fluid.2018.10.011
Fick diffusion coefficients of binary fluid mixtures consisting of methane, carbon dioxide, and propane via molecular dynamics simulations based on simplified pair-specific ab initio-derived force fields
In: Fluid Phase Equilibria 502 (2019), Article No.: 112257
ISSN: 0378-3812
DOI: 10.1016/j.fluid.2019.112257
Liquid Viscosity and Interfacial Tension of Binary and Ternary Mixtures Containing n-Octacosane by Surface Light Scattering
In: Journal of Chemical and Engineering Data 64 (2019), p. 817-826
ISSN: 0021-9568
DOI: 10.1021/acs.jced.8b01139
Liquid Viscosity and Surface Tension of n-Hexane, n-Octane, n-Decane, and n-Hexadecane up to 573 K by Surface Light Scattering
In: Journal of Chemical and Engineering Data 64 (2019), p. 4116-4131
ISSN: 0021-9568
DOI: 10.1021/acs.jced.9b00525
Interfacial tensions and viscosities in multiphase systems by surface light scattering (SLS)
In: Journal of Colloid and Interface Science 538 (2019), p. 671-681
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2018.11.095
Interfacial Tension and Liquid Viscosity of Binary Mixtures of n-Hexane, n-Decane, or 1-Hexanol with Carbon Dioxide by Molecular Dynamics Simulations and Surface Light Scattering
In: International Journal of Thermophysics 40 (2019), Article No.: 79
ISSN: 0195-928X
DOI: 10.1007/s10765-019-2544-y
Diffusivities in 1-alcohols containing dissolved H2, He, N2, CO, or CO2 close to infinite dilution
In: Journal of Physical Chemistry B 123 (2019), p. 8777–8790
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.9b062112018
Thermal, Mutual, and Self-Diffusivities of Binary Liquid Mixtures Consisting of Gases Dissolved in n-Alkanes at Infinite Dilution
In: Journal of Physical Chemistry B 122 (2018), p. 3163-3175
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.8b00733
Viscosity and Surface Tension of Branched Alkanes 2-Methylnonane and 4-Methylnonane
In: Journal of Chemical and Engineering Data 63 (2018), p. 2833-2839
ISSN: 0021-9568
DOI: 10.1021/acs.jced.8b00163
Influence of Liquid Structure on Fickian Diffusion in Binary Mixtures of n-Hexane and Carbon Dioxide Probed by Dynamic Light Scattering, Raman Spectroscopy, and Molecular Dynamics Simulations
In: Journal of Physical Chemistry B 122 (2018), p. 7122-7133
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.8b035682017
Simultaneous Analysis of Equilibrium Fluctuations at the Surface and in the Bulk of a Binary Liquid Mixture by Dynamic Light Scattering
In: Journal of Physical Chemistry B 121 (2017), p. 10950-10956
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.7b09770
Liquid Viscosity and Surface Tension of n-Dodecane, n-Octacosane, Their Mixtures, and a Wax between 323 and 573 K by Surface Light Scattering
In: Journal of Chemical and Engineering Data 62 (2017), p. 3319-3333
ISSN: 0021-9568
DOI: 10.1021/acs.jced.7b00363
Thermophysical Properties of Homologous Tetracyanoborate-Based Ionic Liquids Using Experiments and Molecular Dynamics Simulations
In: Journal of Physical Chemistry B 121 (2017), p. 4145-4157
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.6b12929
A Simple Prediction Method for the Surface Tension of Ionic Liquids as a Function of Temperature
In: International Journal of Thermophysics 38 (2017)
ISSN: 0195-928X
DOI: 10.1007/s10765-017-2301-z2016
Effective thermal conductivity of nanofluids - A new model taking into consideration Brownian motion
In: International Journal of Heat and Mass Transfer 99 (2016), p. 532-540
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2016.03.1292015
Dynamic Viscosity of Tetracyanoborate- and Tricyanomethanide-Based Ionic Liquids by Dynamic Light Scattering
In: Industrial & Engineering Chemistry Research 54 (2015), p. 3071-3081
ISSN: 0888-5885
DOI: 10.1021/acs.iecr.5b00086
Mutual and Self-Diffusivities in Binary Mixtures of [EMIM][B(CN)(4)] with Dissolved Gases by Using Dynamic Light Scattering and Molecular Dynamics Simulations
In: Journal of Physical Chemistry B 119 (2015), p. 8583-8592
ISSN: 1520-6106
DOI: 10.1021/acs.jpcb.5b02659
Surface Tension of Tricyanomethanide- and Tetracyanoborate-Based lmidazolium Ionic Liquids by Using the Pendant Drop Method
In: Journal of Chemical and Engineering Data 60 (2015), p. 2665-2673
ISSN: 0021-9568
DOI: 10.1021/acs.jced.5b00303
Viscosity of heavy n-alkanes and diffusion of gases therein based on molecular dynamics simulations and empirical correlations
In: Journal of Chemical Thermodynamics 91 (2015), p. 101-107
ISSN: 0021-9614
DOI: 10.1016/j.jct.2015.07.0262014
Simultaneous Determination of Thermal and Mutual Diffusivity of Binary Mixtures of n-Octacosane with Carbon Monoxide, Hydrogen, and Water by Dynamic Light Scattering
In: Journal of Physical Chemistry B 118 (2014), p. 3981-3990
ISSN: 1520-6106
DOI: 10.1021/jp500300y
Measurement and Prediction of the Thermal Conductivity of Tricyanomethanide- and Tetracyanoborate-Based Imidazolium Ionic Liquids
In: International Journal of Thermophysics 35 (2014), p. 195-217
ISSN: 0195-928X
DOI: 10.1007/s10765-014-1617-1
Mutual and Thermal Diffusivity of Binary Mixtures of the Ionic Liquids [BMIM][C(CN)(3)] and [BMIM][B(CN)(4)] with Dissolved CO2 by Dynamic Light Scattering
In: Journal of Physical Chemistry B 118 (2014), p. 4636-4646
ISSN: 1520-6106
DOI: 10.1021/jp501973s2013
Model development for the gas-to-liquid process based on molecular simulation and experimental measurements of physical properties
Computational Molecular Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84911487154&origin=inward
Thermophysical Properties of the Ionic Liquids [EMIM][B(CN)(4)] and [HMIM][B(CN)(4)]
In: Journal of Physical Chemistry B 117 (2013), p. 8512-8523
ISSN: 1520-6106
DOI: 10.1021/jp400315h2012
Development of a united-atom force field for 1-ethyl-3-methylimidazolium tetracyanoborate ionic liquid
In: Molecular Physics 110 (2012), p. 1115-1126
ISSN: 0026-8976
DOI: 10.1080/00268976.2011.648965
Viscosity, Interfacial Tension, Self-Diffusion Coefficient, Density, and Refractive Index of the Ionic Liquid 1-Ethyl-3-methylimidazolium Tetracyanoborate as a Function of Temperature at Atmospheric Pressure.
In: Journal of Chemical and Engineering Data 57 (2012), p. 828-835
ISSN: 0021-9568