Kinetic assessment of H2 production from NH3 decomposition over CoCeAlO catalyst in a microreactor: Experiments and CFD modelling

Catalytic hydrogen storage in liquid hydrogen carriers

“…Besides, Bertola et al performed kinetic assessment of NH 3 decomposition reaction based on experiments and computational fluid dynamics modeling. 315 A flat-plate microreactor operating under kinetic-control conditions with negligible mass transfer resistance is designed, which facilitates the assemblage and disassemblage of components.…”

Modeling-aided coupling of catalysts, conditions, membranes, and reactors for efficient hydrogen production from ammonia

“…[41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57] Most modeling studies are performed for the benchmark Ru-based catalysts, and the kinetics are often represented with the Temkin-Pyzhev model or modifications thereof on account of its simplicity or to express the decomposition kinetics mathematically, thus resulting in an expression with a positive order ammonia and a negative order hydrogen dependence of varying magnitudes. [58][59][60][61][62][63][64][65][66] The hydrogen reaction order significantly varies from catalyst to catalyst in the range of −2.5 to −0.25; it is commonly regarded as negative. Thus, maintaining a low partial pressure of hydrogen is beneficial for reaction kinetics in the membrane reactor.…”

“On–off” switch for H2 and O2 generation from HCOOH resp. H2O2

“…The exploration of efficient and safe production, storage, and transportation (especially in long term) of H 2 , an ultra‐low density and awfully low‐boiling point gas, 11–15 is a serious challenge 16–20 . Consequently, numerous inorganic and organic compounds have been proposed as hydrogen carriers, such as methanol, 21 ammonia, 22,23 methane, 24 ammonia borane, 3,25–29 hydrazine hydrate, 30 dimethylaminoborane, 31 sodium borohydride, 3,32–37 tetrahydroxydi‐boron, 38–41 tetramethyldisiloxane, 42 hydrazine borane, 43 and formic acid (FA) 44–46 . Among them, FA, the main product of biomass manufacture by hydrolysis or oxidation of cellulose with high yields, 47–50 has become one of the most attractive hydrogen carriers due to its excellent hydrogen content (4.4 wt%), high volumetric hydrogen storage density of 53 g/L, nontoxicity, ease of portability, regeneration from CO 2 hydrogenation, and liquid stability at room temperature.…”

“…[6][7][8][9][10] The exploration of efficient and safe production, storage, and transportation (especially in long term) of H 2 , an ultralow density and awfully low-boiling point gas, [11][12][13][14][15] is a serious challenge. [16][17][18][19][20] Consequently, numerous inorganic and organic compounds have been proposed as hydrogen carriers, such as methanol, 21 ammonia, 22,23 methane, 24 ammonia borane, 3,[25][26][27][28][29] hydrazine hydrate, 30 dimethylaminoborane, 31 sodium borohydride, 3,[32][33][34][35][36][37] tetrahydroxydiboron, [38][39][40][41] tetramethyldisiloxane, 42 hydrazine borane, 43 and formic acid (FA). [44][45][46] Among them, FA, the main product of biomass manufacture by hydrolysis or oxidation of cellulose with high yields, [47][48][49]…”