Hydrogen Storage: Thermochemical Studies of N-Alkylcarbazoles and Their Derivatives as a Potential Liquid Organic Hydrogen Carriers

Emel'Yanenko VN, Varfolomeev MA, Verevkin SP, Stark K, Müller K, Müller M, Bösmann A, Wasserscheid P, Arlt W (2015)

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Publisher: American Chemical Society

Book Volume: 119

Pages Range: 26381-26389

Journal Issue: 47

DOI: 10.1021/acs.jpcc.5b10392

Abstract

Although N-ethylcarbazole is considered as a most promising potential liquid organic hydrogen carriers (LOHC) substance, a major drawback for stationary and particularly mobile applications is its high melting point of 343 K. Study of other possible N-alkylcarbazole-derivatives having lower melting points but keeping a high storage density is of practical importance. This contribution presents thermochemical properties (enthalpy of formation, enthalpy of vaporization, enthalpy of sublimation, and fusion enthalpy) for N-alkylcarbazoles (with alkyl = isopropyl, n-propyl, and n-butyl) derived from experiments in order to investigate the applicability of the carbazole derivatives as potential LOHCs. Additionally, high-level quantum chemical calculations were applied to determine molar enthalpies of formation of the gaseous carbazole derivatives and thus validated the experimental findings. Using a combination of the quantum-chemical calculations with vaporization enthalpy data measured in this work, the standard molar liquid phase enthalpies of formation were derived for alkylcarbazole derivatives. Results of this study were applied for thermodynamic analysis of the liquid-phase reversible hydrogenation/dehydrogenation processes with N-alkylcarbazoles.

Authors with CRIS profile

Involved external institutions

Universität Rostock Germany (DE) Kazan (Volga region) Federal University / Казанский (Приволжский) федеральный университет Russian Federation (RU)

How to cite

APA:

Emel'Yanenko, V.N., Varfolomeev, M.A., Verevkin, S.P., Stark, K., Müller, K., Müller, M.,... Arlt, W. (2015). Hydrogen Storage: Thermochemical Studies of N-Alkylcarbazoles and Their Derivatives as a Potential Liquid Organic Hydrogen Carriers. Journal of Physical Chemistry C, 119(47), 26381-26389. https://doi.org/10.1021/acs.jpcc.5b10392

MLA:

Emel'Yanenko, Vladimir N., et al. "Hydrogen Storage: Thermochemical Studies of N-Alkylcarbazoles and Their Derivatives as a Potential Liquid Organic Hydrogen Carriers." Journal of Physical Chemistry C 119.47 (2015): 26381-26389.

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