Thomas Koller › Welcome to AOT-TP!

Dr.-Ing. Thomas M. Koller

Group Leader "Thermophysical Properties of Multiphase Systems in Process Engineering"

Department of Chemical and Biological Engineering (CBI)
Institute of Advanced Optical Technologies - Thermophysical Properties

Room 01.011
Paul-Gordan-Straße 8
91052 Erlangen
Germany

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:

`2023`

Bioucas F., Koller TM., Fröba AP.: 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
Bioucas F., Rausch MH., Koller TM., Fröba AP.: 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
Kerscher M., Jander JH., Cui J., Wasserscheid P., Rausch MH., Koller TM., Fröba AP.: 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
Zhai Z., Koller TM.: 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
Zhai Z., Koller TM.: 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
Zhai Z., Paap U., Gezmis A., Maier F., Steinrück HP., Koller TM.: 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.2023.122388

`2022`

Bioucas F., Koehn C., Jean-Fulcrand A., Garnweitner G., Koller TM., Fröba AP.: 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
Cui J., Jander JH., Koller TM., Fröba AP.: 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
Cui J., Kerscher M., Jander JH., Rüde T., Schulz P., Wasserscheid P., Rausch MH., Koller TM., Fröba AP.: 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
Jander JH., Kerscher M., Cui J., Wicklein J., Rüde T., Preuster P., Rausch MH., Wasserscheid P., Koller TM., Fröba AP.: 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
Kerscher M., Jander JH., Cui J., Martin M., Wolf M., Preuster P., Rausch MH., Wasserscheid P., Koller TM., Fröba AP.: 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
Kerscher M., Klein T., Preuster P., Wasserscheid P., Koller TM., Rausch MH., Fröba AP.: 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
Klein T., Lenahan F., Zhai Z., Kerscher M., Jander JH., Koller TM., Rausch MH., Fröba AP.: 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
Knorr J., Cui J., Koller TM., Fröba AP.: 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
Koller TM., Kerscher M., Fröba AP.: 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
Schmidt P., Kerscher M., Klein T., Jander JH., Bioucas F., Rüde T., Li S., Stadelmaier M., Hanyon S., Fathalla R., Bösmann A., Preuster P., Wasserscheid P., Koller TM., Rausch MH., Fröba AP.: 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
Seidl V., Bosch M., Paap U., Livraghi M., Zhai Z., Wick C., Koller TM., Wasserscheid P., Maier F., Smith AS., Bachmann J., Steinrück HP., Meyer K.: 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
Zhai Z., Jander JH., Bergen A., Cui J., Meyer K., Koller TM.: 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-z

`2021`

Kerscher M., Fröba AP., Koller TM.: 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
Klein T., Lenahan F., Kerscher M., Jander JH., Rausch MH., Koller TM., Fröba AP.: 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
Koller TM., Cui J., Schmidt M., Knorr J., Fröba AP.: 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
Piszko M., Lenahan F., Hahn S., Rausch MH., Koller TM., Klein T., Fröba AP.: 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.1c00084

`2020`

Bioucas F., Piszko M., Kerscher M., Preuster P., Rausch MH., Koller TM., Wasserscheid P., Fröba AP.: 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
Bioucas F., Rausch MH., Schmidt J., Bück A., Koller TM., Fröba AP.: 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
Kerscher M., Klein T., Schulz P., Veroutis E., Dürr S., Preuster P., Koller TM., Rausch MH., Economou IG., Wasserscheid P., Fröba AP.: 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
Klein T., Lenahan F., Kerscher M., Rausch MH., Economou IG., Koller TM., Fröba AP.: 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
Klein T., Piszko M., Lang M., Mehler J., Schulz P., Rausch MH., Giraudet C., Koller TM., Fröba AP.: 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
Koller TM., Lenahan F., Schmidt P., Klein T., Mehler J., Maier F., Rausch MH., Wasserscheid P., Steinrück HP., Fröba AP.: 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
Wu W., Klein T., Kerscher M., Rausch MH., Koller TM., Giraudet C., Fröba AP.: 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.0c00646

`2019`

Bioucas F., Damm C., Peukert W., Rausch MH., Koller TM., Giraudet C., Fröba AP.: 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
Higgoda U., Hellmann R., Koller TM., Fröba AP.: 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
Higgoda U., Hellmann R., Koller TM., Fröba AP.: 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
Higgoda U., Hewa Kankanamge CJK., Hellmann R., Koller TM., Fröba AP.: 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
Klein T., Cui J., Kalantar A., Chen J., Rausch MH., Koller TM., Fröba AP.: 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
Klein T., Yan S., Cui J., Magee JW., Kroenlein K., Rausch MH., Koller TM., Fröba AP.: 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
Koller TM., Prucker T., Cui J., Klein T., Fröba AP.: 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
Koller TM., Yan S., Steininger C., Klein T., Fröba AP.: 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
Wu W., Klein T., Kerscher M., Rausch MH., Koller TM., Giraudet C., Fröba AP.: 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.9b06211

`2018`

Giraudet C., Klein T., Zhao G., Rausch MH., Koller TM., Fröba AP.: 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
Klein T., Cui J., Kalantar A., Chen J., Rausch MH., Koller TM., Fröba AP.: 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
Klein T., Wu W., Rausch MH., Giraudet C., Koller TM., Fröba AP.: 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.8b03568

`2017`

Koller TM., Klein T., Chen J., Kalantar A., van der Laan GP., Rausch MH., Fröba AP.: 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
Koller TM., Klein T., Giraudet C., Chen J., Kalantar A., van der Laan GP., Rausch MH., Fröba AP.: 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
Koller TM., Ramos J., Schulz P., Economou IG., Rausch MH., Fröba AP.: 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
Koller TM., Steininger C., Rausch MH., Fröba AP.: 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-z

`2016`

Shukla KN., Koller TM., Rausch MH., Fröba AP.: 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.2016.03.129

`2015`

Bi S., Koller TM., Rausch MH., Wasserscheid P., Fröba AP.: 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
Koller TM., Heller A., Rausch MH., Wasserscheid P., Economou IG., Fröba AP.: 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
Koller TM., Rausch MH., Pohako-Esko K., Wasserscheid P., Fröba AP.: 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
Makrodimitri ZA., Heller A., Koller TM., Rausch MH., Fleys MSH., Bos ANR., van der Laan GP., Fröba AP., Economou IG.: 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.2015.07.026

`2014`

Heller A., Koller TM., Rausch MH., Fleys MSH., Bos ANR., van der Laan GP., Makrodimitri ZA., Economou IG., Fröba AP.: 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
Koller TM., Schmid S., Sachnov S., Rausch MH., Wasserscheid P., Fröba AP.: 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
Rausch MH., Heller A., Herbst J., Koller TM., Bahlmann M., Schulz P., Wasserscheid P., Fröba AP.: 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/jp501973s

`2013`

Economou IG., Makrodimitri ZA., Fröba AP., Koller TM., Heller A., Rausch MH., Fleys MSH., Bos ANR., Unruh D.: 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
Koller TM., Rausch MH., Ramos J., Schulz P., Wasserscheid P., Economou IG., Fröba AP.: 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/jp400315h

`2012`

Koller TM., Ramos J., Garrido NM., Fröba AP., Economou IG.: 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
Koller TM., Rausch MH., Schulz P., Berger M., Wasserscheid P., Economou IG., Leipertz A., Fröba AP.: 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