Benzyltoluene/dibenzyltoluene-based mixtures as suitable liquid organic hydrogen carrier systems for low temperature applications

Jorschick H, Geißelbrecht M, Eßl M, Preuster P, Bösmann A, Wasserscheid P (2020)

Publication Type: Journal article

Publication year: 2020

Journal

DOI: 10.1016/j.ijhydene.2020.03.210

Abstract

In this contribution we propose mixtures of the two LOHC systems benzyltoluene (H0-BT)/perhydro benzyltoluene (H12-BT) and dibenzyltoluene (H0-DBT)/perhydro dibenzyltoluene (H18-DBT) as promising hydrogen storage media for technical applications at temperatures below ambient. The mixing of the two LOHC systems provides the advantage of a reduced viscosity of the hydrogen-rich system, for example a 20 wt% addition of H12-BT to H18-DBT reduces the viscosity at 10 °C by 80%. Interestingly, it is also found that the dehydrogenation of such mixture provides a hydrogen release productivity that is 12–16% higher compared to pure H18-DBT dehydrogenation under otherwise identical conditions. This enhanced rate is attributed to a combination of reduced hydrogen partial pressure in the reactor (due to the higher H12-BT vapor pressure), preferred H12-BT dehydrogenation (due to faster H12-BT diffusion) and effective transfer hydrogenation between the two LOHC systems.

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How to cite

APA:

Jorschick, H., Geißelbrecht, M., Eßl, M., Preuster, P., Bösmann, A., & Wasserscheid, P. (2020). Benzyltoluene/dibenzyltoluene-based mixtures as suitable liquid organic hydrogen carrier systems for low temperature applications. International Journal of Hydrogen Energy. https://dx.doi.org/10.1016/j.ijhydene.2020.03.210

MLA:

Jorschick, Holger, et al. "Benzyltoluene/dibenzyltoluene-based mixtures as suitable liquid organic hydrogen carrier systems for low temperature applications." International Journal of Hydrogen Energy (2020).

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