Study on 2-propanol/acetone/hydrogen chemical heat pump: endothermic dehydrogenation of 2-propanol

Microwave-Mediated Continuous Hydrogen Abstraction Reaction from 2-PrOH Catalyzed by Platinum on Carbon Bead

“…It is crucial to maintain recyclability through the hydrogenation-dehydrogenation process for the sustainable use of hydrogen carriers. The dehydrogenation reaction of 2-PrOH catalyzed by a heterogeneous catalyst has been reported to proceed under various conditions [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36], such as thermal [20][21][22][23][24]27], photocatalytic [28,30,33,34,36], supercritical [29], and electrochemical [31,32].…”

“…This was smoothly enhanced by the microwave-mediated specific local heating effect [35]. However, the reaction efficiencies of these reported methods [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] are insufficient for the use of 2-PrOH as a hydrogen carrier, despite the relatively mild endothermic nature of the dehydrogenation of 2-PrOH to acetone compared with the dehydrogenation of MCH. Therefore, the development of more effective methods for hydrogen generation from 2-PrOH is essential.…”

Thermodynamic analysis of an isopropanol-acetone-hydrogen chemical heat pump

“…The working pair is crucial to the chemical heat pump, because the operation and performance of the heat pump relies on chemical reaction. The isopropanol-acetone-hydrogen (IAH), which was proposed by Prevost and Bugarel [5], is regarded as one of the most promising working mediums in chemical heat pump [6,7]. A distillation column was included in the IAH heat pump devised by Saito et al [8] to separate the working mediums in the heat pump.…”

Exergetic efficiency of high-temperature-lift chemical heat pump (CHP) based on CaO/CO2and CaO/H2O working pairs

“…To use chemical reactions for upgrading low-grade waste heat, a chemical heat pump (CHP) may be used which offers a wider range of operating temperature and versatility in comparison with the conventional vapor compression or (de)sorption heat pump. In practice, temperatures as low as 230 K in refrigeration or freezing systems, and up to 870 K in heat generation systems can be supplied using CHPs [12][13][14][15][16][17][18][19][20].…”

“…First and/or second law (exergetic) efficiency analyses of a range of CHPs with different working pairs (working fluid or medium) operating mainly for heat generation and refrigeration, that is, modes a and b, have been carried out [12,20,[24][25][26][27][28][29][30][31]. The kinetic aspects of some of the working pairs have also been investigated [14,17,20,[32][33][34]. However, the work on exergetic efficiency analysis of a CHP operating in the temperature-level amplification mode, that is, mode c, is still limited [27,35].…”