Jander JH, Rausch MH, Wasserscheid P, Fröba AP (2024)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2024
Book Volume: 78
Pages Range: 1429-1437
DOI: 10.1016/j.ijhydene.2024.06.357
During hydrogenation and dehydrogenation reactions of liquid organic hydrogen carriers (LOHC), their thermophysical properties change significantly as a function of the degree of hydrogenation (DoH). Compared with conventional techniques, Raman spectroscopy offers a contactless methodology for online process monitoring without the need of sampling. This work demonstrates the application of Raman spectroscopy for the determination of the DoH under process-relevant conditions for LOHC systems based on diphenylmethane (DPM) and benzyltoluene (BT) up to 473 K. For the DPM-based system, a previous study is extended by examining the influence of process-like disturbances. For the BT-based system, a novel approach using indirect hard modeling of the unpolarized Raman spectra is applied, which results in strongly reduced uncertainties and insensitivity towards process-like disturbances, e.g. reaction by-products. For a corresponding testing set exhibiting a pronounced fluorescent background in the Raman spectra, the DoH is determined with an average absolute deviation of 0.0057.
APA:
Jander, J.H., Rausch, M.H., Wasserscheid, P., & Fröba, A.P. (2024). Demonstrating the applicability of Raman spectroscopy for the characterization of hydrogen loading of bicyclic liquid organic hydrogen carriers (LOHCs) under process-relevant conditions. International Journal of Hydrogen Energy, 78, 1429-1437. https://doi.org/10.1016/j.ijhydene.2024.06.357
MLA:
Jander, Julius Hans, et al. "Demonstrating the applicability of Raman spectroscopy for the characterization of hydrogen loading of bicyclic liquid organic hydrogen carriers (LOHCs) under process-relevant conditions." International Journal of Hydrogen Energy 78 (2024): 1429-1437.
BibTeX: Download