## 5 Conclusions  
In this paper, a triple-loop dehydrogenation system based on a centrifugal convection reactor was proposed to improve the dehydrogenation speed of LOHC technology. From three preliminary experiments and a trial run of the constructed dehydrogenation system, the following conclusions were obtained:  
1. The dehydrogenation reactor developed in this study demonstrated superior performance compared to conventional fixed-bed or batch reactors, primarily due to the efficient separation of hydrogen bubbles from the catalyst surface. Using 1.5 kg of commercially available 0.5 wt% Pt catalyst and 26.3 L of perhydro-DBT, the degree of dehydrogenation reached 54.2% in 295 min. 2. The average hydrogen production rate during the first hour was measured at 52.6 LPM, which was approximately 148% of the predicted value based on the reaction kinetics of the 5.0 wt% Pt catalyst from Sigma-Aldrich(r). 3. The preliminary gas infiltration experiments indicated that the proposed reactor isolated 42-95 LPM of hydrogen production at a rotation speed of 200 rpm when the catalyst volume was 2.8 L. The amount of liquid within the reactor was automatically adjusted according to changes in the hydrogen production rate. 4. The bounding surfaces of the rotating catalyst bed neighboring the stationary walls of the reactor needed to be highly permeable to utilize the secondary flow. Moreover, the catalyst pellets needed to be located within a small effective distance from this permeable wall. Finally, the bottom wall of the rotor must be an impermeable plate that extends to the center of rotation and be installed with the narrowest gap from the reactor's bottom wall. Figure 13: Measured hydrogen flow rate with mass flow meter compared. 5. The flow through the reaction loop could be driven by the pumping capacity of the reactor for rotation speeds > 200 rpm. However, the amount of convective heat transfer along the heating surface sufficient to avoid thermal degradation must be accomplished by employing a separate heating loop with an adequately sized pump. 6. If LOHC vapor was not adequately removed from the gas mixture produced by the reactor, the MFM measurement results could not be trusted. The following future research directions were identified: 1. The degradation characteristics of the LOHC material need to be studied to provide the criteria required in the design of the heating mechanism. 2. A condenser that effectively removes LOHC vapor from the produced hydrogen without any accompanying significant flow resistance needs to be developed. The following supporting information can be downloaded at: [[https://youtu.be/n8](https://youtu.be/n8) ek_TODuc4]([https://youtu.be/n8](https://youtu.be/n8) ek_TODuc4) (accessed on 1 July 2024), Video S1: Flow visualization of secondary circulation within a rotating partition. Conceptualization, S.L. and M.H.S. ; experiment implementation including design and assembly of apparatus, J.L. and M.U. ; data curation, S.P. ; writing--original draft preparation, J.L., M.U. and S.P. ; writing--review and editing, S.L. and M.H.S. All authors have read and agreed to the published version of the manuscript. The authors are thankful to human resources development project of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) for the support grant funded by the Korea government Ministry of Trade, Industry and Energy under the project titled Middle market enterprise specialized human resources development for residential and commercial fuel cell, numbered: 2022400000580. They are also thankful for the support given by the Dongguk University Research Fund of 2023. Not applicable. The original contributions presented in the study are included in the article and Supplementary Materials, further inquiries can be directed to the corresponding authors. Author [PERSON] was employed by the company SNAAM Automobiles Industries Co.