Hydrogenation of the liquid organic hydrogen carrier compound dibenzyltoluene – reaction pathway determination by 1H NMR spectroscopy

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Details zur Publikation

Autor(en): Do TG, Preuster P, Aslam R, Bösmann A, Müller K, Arlt W, Wasserscheid P
Zeitschrift: Reaction Chemistry & Engineering
Verlag: Royal Society of Chemistry
Jahr der Veröffentlichung: 2016
ISSN: 2058-9883


Abstract

The catalytic hydrogenation of the LOHC compound dibenzyltoluene (H0-DBT) was investigated by 1H NMR spectroscopy in order to elucidate the reaction pathway of its charging process with hydrogen in the context of future hydrogen storage applications. Five different reaction pathways during H0-DBT hydrogenation were considered including middle-ring preference (middle-side-side, MSS), side-middle-side order of hydrogenation (SMS), side-ring preference (SSM), simultaneous hydrogenation of all three rings without intermediate formation and statistical hydrogenation without any ring preference. Detailed analysis of the 1H NMR spectra of the H0-DBT hydrogenation over time revealed that the reaction proceeds with a very high preference for the SSM order at temperatures between 120 °C and 200 °C and 50 bar in the presence of a Ru/Al2O3-catalyst. HPLC analysis supported this interpretation by confirming an accumulation of H12-DBT species prior to full hydrogenation to H18-DBT with middle ring hydrogenation as the final step.


FAU-Autoren / FAU-Herausgeber

Arlt, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Thermische Verfahrenstechnik
Aslam, Rabya
Lehrstuhl für Thermische Verfahrenstechnik
Bösmann, Andreas Dr.
Lehrstuhl für Chemische Reaktionstechnik
Müller, Karsten PD Dr.
Lehrstuhl für Thermische Verfahrenstechnik
Preuster, Patrick
Lehrstuhl für Chemische Reaktionstechnik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Do, T.G., Preuster, P., Aslam, R., Bösmann, A., Müller, K., Arlt, W., & Wasserscheid, P. (2016). Hydrogenation of the liquid organic hydrogen carrier compound dibenzyltoluene – reaction pathway determination by 1H NMR spectroscopy. Reaction Chemistry & Engineering. https://dx.doi.org/10.1039/C5RE00080G

MLA:
Do, Truong Giang, et al. "Hydrogenation of the liquid organic hydrogen carrier compound dibenzyltoluene – reaction pathway determination by 1H NMR spectroscopy." Reaction Chemistry & Engineering (2016).

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Zuletzt aktualisiert 2019-14-03 um 12:49