Efficient and controlled H₂ release from sodium formate

Abstract

Sodium formate (SF) has been used for a long time as a technological additive for H2 release from the dehydrogenation of formic acid . Formic acid is often synthesized from...

High-pressure hydrogen generation from dehydrogenation of formic acid

“…In contrast, formate does not have sufficient energy to release high-pressure H 2 by dehydrogenation (eqn (2)). 11,12 H 2 can be released from FA on demand with the help of suitable catalysts under mild reaction conditions. [13][14][15][16][17][18][19][20][21] This has drawn the attention of many researchers and several very active homogeneous as well as heterogeneous catalysts have been developed over the past 15 years which efficiently dehydrogenate FA to H 2 and CO 2 selectively.…”

“…In contrast, formate does not have sufficient energy to release high-pressure H 2 by dehydrogenation (eqn (2)). 11,12…”

“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.…”

“…[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][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. As a result, a large variety of heterogeneous and homogeneous catalytic systems, such as those involving Pd, Au, and Pt, have been continuously designed and developed for selective H 2 generation from HCOOH (Equation 1), 51 meanwhile suppressing CO production from HCOOH dehydration.…”

Bimetallic PtNi Nanoclusters Supported on Carbon Nanospheres as Catalysts for H2 Production from Dimethylamineborane Hydrolysis

“…To develop a green and sustainable energy policy in the future, much attention has been paid not only to the technical and academic challenges but also to crucial orientation by the social and economic system and a variation in the personal and collective viewpoints toward further energy. − That is to say, one of the most severe issues clearly involves the over-consumption of traditional fossil fuels and man-made global warming due to the rapid growth of human society and reckless emissions of greenhouse gases. − It is highly essential to explore clean energy, such as tidal power, solar power, biopower, wind energy, hydropower, and hydrogen energy, − to reduce the dependency of fossil energy. Among them, hydrogen (H 2 ), a propitious energy source of green, renewable, and carbon-free energy, − has been considered as one of the most promising potential alternatives for fossil carbon (oil, coal, and gas) to address environmental deterioration and the increasing demand of global energy. − …”