Benzyltoluene/perhydro benzyltoluene - pushing the performance limits of pure hydrocarbon liquid organic hydrogen carrier (LOHC) systems
Ruede T, Dürr S, Preuster P, Wolf M, Wasserscheid P (2022)
Publication Type: Journal article
Publication year: 2022
Journal
DOI: 10.1039/d1se01767e
Abstract
LOHC technologies enable safe and efficient hydrogen logistics using the existent fuel infrastructure. This study presents benzyltoluene (H0-BT)/perhydro benzyltoluene (H12-BT) as a highly attractive technical LOHC system. Compared with the well-established LOHC systems toluene/methylcyclohexane and dibenzyltoluene (H0-DBT)/perhydro dibenzyltoluene (H18-DBT), the H0-BT/H12-B system combines high volumetric storage density and excellent robustness in hydrogenation/dehydrogenation cycles with low viscosity for easy handling under colder operation conditions. Herein, we report repeated hydrogenation and dehydrogenation cycles in semi-continuous operation at 290 degrees C with a commercial Pt on alumina catalyst and technical quality LOHC material. Reaction rates for both hydrogen uptake and release are generally found higher compared to those of the DBT-based LOHC system under identical reaction conditions. Side-product formation is very low during cycling the H0-BT/H12-BT system and can be traced back to a very low activity towards deep dehydrogenation forming the cyclisation product methylfluorene in four different regioisomers. Furthermore, we present the experimentally determined hydrogenation/dehydrogenation equilibrium of H0-BT/H12-BT in the temperature range between 220 and 360 degrees C and for total pressures of 1 and 9 bar(abs).
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Germany (DE)How to cite
APA:
Ruede, T., Dürr, S., Preuster, P., Wolf, M., & Wasserscheid, P. (2022). Benzyltoluene/perhydro benzyltoluene - pushing the performance limits of pure hydrocarbon liquid organic hydrogen carrier (LOHC) systems. Sustainable Energy & Fuels. https://dx.doi.org/10.1039/d1se01767e
MLA:
Ruede, Timo, et al. "Benzyltoluene/perhydro benzyltoluene - pushing the performance limits of pure hydrocarbon liquid organic hydrogen carrier (LOHC) systems." Sustainable Energy & Fuels (2022).
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