Study of catalytic hydrogenation of N-ethylcarbazole over ruthenium catalyst

Hydrogen storage by N-ethylcarbazol as a new liquid organic hydrogen carrier: A DFT study on the mechanism

“…The effect of temperature increasing from 70 C to 190 C indicates that the hydrogenation reaction rate between 135 C and 155 C reaches the maximum value [29]. Yang et al investigated the temperature controlled stage-wise dehydrogenation of perhydro-N-ethylcarbazole and its cycle performance.…”

Bimetallic AgPd Nanoparticles Immobilized on Amine‐Functionalized SBA‐15 as Efficient Catalysts for Hydrogen Generation from Formic Acid

“…All the prepared AgPd/SBA‐15‐Amine catalysts were conducted in dehydrogenation reaction, Ag 1 Pd 9 /SBA‐15‐Amine exhibited the highest catalytic activity with a TOF value of 964 h −1 at 323 K, which is higher than those of most of the reported AgPd catalysts under the same conditions (Table ). As the Pd content in AgPd NPs increased to 100 % (pure Pd/SBA‐15‐Amine), the TOF values decreased, highlighting the existence of a synergistic effect between the composition of the AgPd alloy and SBA‐15‐Amine for the dehydrogenation of FA/SF (Figure S4), which is consistent with the literature …”

“…As the Pd content in AgPd NPs increased to 100 % (pure Pd/ SBA-15-Amine), the TOF values decreased, highlighting the existence of a synergistic effect between the composition of the AgPd alloy and SBA-15-Amine for the dehydrogenation of FA/SF ( Figure S4), which is consistent with the literature. [16,[37][38][39] For confirming the composition of gas produced from the dehydrogenation reaction, the gas was treated with a 10 M NaOH solution trap, which completely absorbed CO 2 from the gas. As displayed in Figure S1, the volume of gas was reduced to half after treating with the NaOH trap, suggesting that the dehydrogenation reaction produces only hydrogen and carbon dioxide without generating CO.…”

“…A prospective alternative approach is to store hydrogen in chemical platform compounds such as formic acid, [10,11] ammonia borane, [12] hydrous hydrazine, [13] sodium-borohydride, [14] and other liquid-phase chemical storage materials. [15,16] Among them, formic acid (FA, HCOOH), which is one of the primary stable by-products of biomass processing techniques such as fermentation, pyrolysis, and supercritical conversion and comprises 4.4 wt% hydrogen, has been widely proposed as a potential hydrogen carrier for its advantages such as high energy density, excellent stability, hydrogen storage in liquid form, and non-toxicity. [17,18] In addition, FA, which can be regenerated through the hydrogenation of carbon dioxide (CO 2 ), offers an efficient means of carbon-neutral H 2 storage.…”

A Novel Eutectic Mixture of Biphenyl and Diphenylmethane as a Potential Liquid Organic Hydrogen Carrier: Catalytic Hydrogenation

“…Based on these results, Ru/Al 2 O 3 was chosen to further determine H 2 -release properties from the liquid biphenyl and diphenylmethane mixture. [21,29] For hydrogenation of cycloalkanes, for example, toluene, the activation energy was reported as 43.1 � 60.2 kJ mol À 1 , [30] depending on the type of catalysts used. The same methods were used to identify the reaction products as for materials screening (e.g., 1 H-NMR spectroscopy) to ensure that the hydrogenation reaction was completed.…”