Catalytically activated stainless steel plates for the dehydrogenation of perhydro dibenzyltoluene

Solymosi, Thomas; Auer, Franziska; Dürr, Stefan; Preuster, Patrick; Wasserscheid, Peter

doi:10.1016/j.ijhydene.2021.08.040

Cited by 22 publications

(13 citation statements)

References 46 publications

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“…Note that the productivity depends on the DoDH since the hydrogen release rate is dependent on the concentration of hydrogen‐rich LOHC molecules. [ 9,92 ] Under steady‐state conditions, both the hydrogen release measured by the MFM and calculated from liquid‐phase analyses of the feed and bottom streams are the same. The productivity at a specific DoDH can be calculated by dividing the mass flow of hydrogen

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H2 by the mass of noble metal in the experimental setup m n m according to Equation (2).…”

Section: Methodsmentioning

confidence: 99%

Performance of Continuous Hydrogen Production from Perhydro Benzyltoluene by Catalytic Distillation and Heat Integration Concepts with a Fuel Cell

Rüde

Anschütz

et al. 2023

Energy Tech

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The benzyltoluene‐based liquid organic hydrogen carrier (LOHC) system enables the safe transport and loss‐free storage of hydrogen. At least 26% of the lower heating value of the released hydrogen, however, has to be invested in form of heat to release the stored hydrogen. The low operation temperatures of catalytic distillation (CD) can facilitate waste heat integration to reduce external heat demand. Herein, the continuous hydrogen release from perhydro benzyltoluene via CD is demonstrated. It is revealed in the experimental results that this mode of operation leads to a high hydrogen release rate and very efficient noble metal catalyst usage at exceptionally mild conditions. The hydrogen‐based productivity of platinum of 0.35 gH2 gPt−1 min−1 (0.7 kWLHV_H2 gPt−1) at a dehydrogenation temperature of only 267 °C is found to be nearly four times higher than for the conventional continuous liquid‐phase dehydrogenation at the same temperature. Furthermore, simulation results of the CD process are described. The feasibility of a fully heat‐integrated process for electricity generation from the released hydrogen via CD using waste heat from the fuel cell for the CD reboiler is demonstrated. The technical potential of coupling the H12–BT dehydrogenation by CD with high‐temperature fuel cell operation is highlighted by the simulation.

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\overset{m}{true}

H2 by the mass of noble metal in the experimental setup m n m according to Equation (2).…”

Section: Methodsmentioning

confidence: 99%

Performance of Continuous Hydrogen Production from Perhydro Benzyltoluene by Catalytic Distillation and Heat Integration Concepts with a Fuel Cell

Rüde

Anschütz

et al. 2023

Energy Tech

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“…17 For the catalyst preparation, support impregnation with platinum sulphite acid (PSA) offers the advantage of Pt and sulphur impregnation in a single process step compared to the also literature-known preparation using hexachloroplatinic acid. 18,19…”

Section: Introductionmentioning

confidence: 99%

“…The performance of the coated metal plates is compared with reference dip-coated plates prepared according to Solymosi et al 18 Durability tests are carried out using ultrasonication. Furthermore, batch dehydrogenation experiments of perhydro benzyltoluene are performed for parameter optimization and for comparison.…”

Section: Introductionmentioning

confidence: 99%

Highly durable spray-coated plate catalyst for the dehydrogenation of perhydro benzyltoluene

Nathrath,

Raed Ramzi,

Bierling

et al. 2024

Catal. Sci. Technol.

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“…DBT has been extensively studied for its potential use in fuel cells as well as in the production of renewable hydrogen. Researchers have explored various approaches to improve the efficiency of DBT-based hydrogen storage systems by continuously studying its various physical and chemical properties. , Subsequently, most studies have focused on the DBT hydrogenation and dehydrogenation catalysis, − while some studies focused on the improvement of hydrogenation and dehydrogenation process and reactor design. , Currently, the primary active metals for hydrogenation catalysts are Ru or Rh, while the primary active metal for a dehydrogenation catalyst is Pt. In recent studies, it has been reported that the Pt doping of Mo x C has proven to be effective in promoting both the hydrogenation and dehydrogenation of DBT. , Wasserscheid and co-workers reported a combination of a heterogeneously catalyzed transfer hydrogenation from H18-DBT to acetone and fuel cell operated with the resulting 2-propanol as fuel, allowing for electrification of LOHC-bound hydrogen in high efficiency (>50%) at surprisingly mild conditions (temperatures below 200 °C) .…”

Section: Introductionmentioning

confidence: 99%

“…30,31 Subsequently, most studies have focused on the DBT hydrogenation and dehydrogenation catalysis, 32−40 while some studies focused on the improvement of hydrogenation and dehydrogenation process and reactor design. 41,42 Currently, the primary active metals for hydrogenation catalysts are Ru or Rh, while the primary active metal for a dehydrogenation catalyst is Pt. In recent studies, it has been reported that the Pt doping of Mo x C has proven to be effective in promoting both the hydrogenation and dehydrogenation of DBT.…”

Section: ■ Introductionmentioning

confidence: 99%

Identifying Noble Metal Catalysts for the Hydrogenation and Dehydrogenation of Dibenzyltoluene: A Combined Theoretical–Experimental Study

Liu,

Zhu,

Xia

et al. 2023

Inorg. Chem.

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We present a comprehensive theoretical and experimental investigation of the hydrogenation and dehydrogenation of dibenzyltoluene (DBT) using Pd-, Pt-, Ru-, and Rh-supported metal catalysts to identify the optimal catalysts for hydrogen storage and release processes. Our results demonstrated significant variation in the catalytic activity of the metal catalysts. 5 wt % Rh/Al 2 O 3 and 5 wt % Pt/Al 2 O 3 showed the highest activity for hydrogenation and dehydrogenation with the highest selectivity and turnover frequency (TOF), respectively. Conversely, 5 wt % Pd/Al 2 O 3 and 5 wt % Ru/Al 2 O 3 exhibited lower catalytic activity toward full hydrogenation and dehydrogenation. Rh/Al 2 O 3 showed the best catalytic hydrogenation activity with a TOF of 26.49 h −1 and a hydrogenation degree of 92.69% in 2 h, while Pt/Al 2 O 3 exhibited the best catalytic dehydrogenation activity with a released H 2 volume of 3755 mL, a dehydrogenation degree of 78.23%, and a TOF of 39.56 h −1 in 2 h. Additionally, we estimated the activation energies for hydrogenation and dehydrogenation to be 67.20 and 82.78 kJ/mol, respectively. Notably, the produced hydrogen gas was of high purity and suitable for use in fuel cells. Density functional theory (DFT) calculations were used to analyze the adsorption structure and reaction energy changes of all intermediate products of DBT on the surface of the chosen catalysts. Our research provides valuable insights into developing efficient catalysts for liquid organic hydrogen carriers.

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Catalytically activated stainless steel plates for the dehydrogenation of perhydro dibenzyltoluene

Cited by 22 publications

References 46 publications

Performance of Continuous Hydrogen Production from Perhydro Benzyltoluene by Catalytic Distillation and Heat Integration Concepts with a Fuel Cell

Performance of Continuous Hydrogen Production from Perhydro Benzyltoluene by Catalytic Distillation and Heat Integration Concepts with a Fuel Cell

Highly durable spray-coated plate catalyst for the dehydrogenation of perhydro benzyltoluene

Identifying Noble Metal Catalysts for the Hydrogenation and Dehydrogenation of Dibenzyltoluene: A Combined Theoretical–Experimental Study

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