Thermophysical properties of the liquid organic hydrogen carrier system based on diphenylmethane with the byproducts fluorene or perhydrofluorene |
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| Affiliation: | 1. Institute of Advanced Optical Technologies − Thermophysical Properties (AOT-TP), Department of Chemical and Biological Engineering (CBI) and Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 8, 91052 Erlangen, Germany;2. Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstraße 1, 91058 Erlangen, Germany;3. Institute of Chemical Reaction Engineering (CRT), Department of Chemical and Biological Engineering (CBI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany;1. Department of Physics, University of Agriculture-38040, Faisalabad, Pakistan;2. Department of Chemistry, University of Agriculture-38040, Faisalabad, Pakistan;1. College of Physics and Electromechanical Engineering, Hubei University of Education, Wuhan 430205, PR China;2. Hubei Engineering Research Center for Safety Detection and Control of Hydrogen Energy - Hubei Key Laboratory of Ferro- & Piezo-electric Materials and Devices, School of Microelectronics, Hubei University, Wuhan 430062, PR China;3. School of Chemistry and Environmental Engineering, Wuhan University of Bioengineering, Wuhan 430415, PR China;1. Khristianovich Institute of Theoretical and Applied Mechanics of SB RAS, 630090, Novosibirsk-90, Institutskaya Str. 4/1, Russian Federation;2. Voevodsky Institute of Chemical Kinetics and Combustion of SB RAS, 630090, Novosibirsk-90, Institutskaya Str. 3, Russian Federation;3. Novosibirsk State University, Novosibirsk-90, Pirogov Str. 2, 630090, Russian Federation;1. Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;2. Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland;1. School of Chemistry, University of Tehran, Iran;2. Computational and Bio-Simulation Research Group, University of Calabar, Nigeria |
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| Abstract: | Fluorene (H0-F) and perhydrofluorene (H12-F) represent process-related byproducts formed by a dehydrocyclization step in the liquid organic hydrogen carrier (LOHC) system based on diphenylmethane (H0-DPM) and dicyclohexylmethane (H12-DPM). The influence of these byproducts on the liquid viscosity, surface tension, and liquid density of the DPM-based system was experimentally determined by studying three dehydrogenated binary mixtures with H0-F mole fractions of 0.05, 0.10, and 0.20 as well as one hydrogenated binary mixture with an H12-F mole fraction of 0.10 close to 0.1 MPa from (283–573) K. The densities increase with increasing share of H0-F or H12-F by around 1% per added byproduct mole fraction of 0.1. For the surface tension, an increase relative to the values of H0-DPM or H12-DPM by up to 6% is found. The addition of H0-F to H0-DPM or H12-F to H12-DPM yields a relative increase in viscosity by up to 9% at the lowest temperature studied. |
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| Keywords: | Density Diphenylmethane Fluorene Liquid organic hydrogen carrier Surface tension Viscosity AARD" },{" #name" :" keyword" ," $" :{" id" :" kwrd0045" }," $$" :[{" #name" :" text" ," _" :" average absolute relative deviation CV" },{" #name" :" keyword" ," $" :{" id" :" kwrd0055" }," $$" :[{" #name" :" text" ," _" :" capillary viscometry H0-DPM" },{" #name" :" keyword" ," $" :{" id" :" kwrd0065" }," $$" :[{" #name" :" text" ," _" :" diphenylmethane H0-F" },{" #name" :" keyword" ," $" :{" id" :" kwrd0075" }," $$" :[{" #name" :" text" ," _" :" fluorene H6-DPM" },{" #name" :" keyword" ," $" :{" id" :" kwrd0085" }," $$" :[{" #name" :" text" ," _" :" cyclohexylphenylmethane H12-BP" },{" #name" :" keyword" ," $" :{" id" :" kwrd0095" }," $$" :[{" #name" :" text" ," _" :" bicyclohexyl H12-DPM" },{" #name" :" keyword" ," $" :{" id" :" kwrd0105" }," $$" :[{" #name" :" text" ," _" :" dicyclohexylmethane H12-F" },{" #name" :" keyword" ," $" :{" id" :" kwrd0115" }," $$" :[{" #name" :" text" ," _" :" perhydrofluorene LOHC" },{" #name" :" keyword" ," $" :{" id" :" kwrd0125" }," $$" :[{" #name" :" text" ," _" :" liquid organic hydrogen carrier PD" },{" #name" :" keyword" ," $" :{" id" :" kwrd0135" }," $$" :[{" #name" :" text" ," _" :" pendant drop SLS" },{" #name" :" keyword" ," $" :{" id" :" kwrd0145" }," $$" :[{" #name" :" text" ," _" :" surface light scattering VT" },{" #name" :" keyword" ," $" :{" id" :" kwrd0155" }," $$" :[{" #name" :" text" ," _" :" vibrating tube |
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