Catalytic Behavior of Iron-Containing Cubic Spinel in the Hydrolysis and Hydrothermolysis of Ammonia Borane

Komova, O.V.; Симагина, В.И.; Pochtar, Alena A.; Булавченко, О. А.; Ищенко, А. В.; Одегова, Г. В.; Gorlova, A. M.; Ozerova, Anna M.; Lipatnikova, Inna L.; Tayban, E.S.; Mukha, Svetlana A.; Netskina, O.V.

doi:10.3390/ma14185422

Cited by 6 publications

(2 citation statements)

References 64 publications

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“…This process operates under a limited water supply, where the heat generated from the exothermic hydride hydrolysis warms the reaction layer. This, in turn, triggers a low-temperature solid-phase hydride dehydrogenation that occurs in the absence of water [15,16].…”

Section: Introductionmentioning

confidence: 99%

Co and Co3O4 in the Hydrolysis of Boron-Containing Hydrides: H2O Activation on the Metal and Oxide Active Centers

Butenko,

Komova,

Simagina

et al. 2024

Materials

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This work focuses on the comparison of H2 evolution in the hydrolysis of boron-containing hydrides (NaBH4, NH3BH3, and (CH2NH2BH3)2) over the Co metal catalyst and the Co3O4-based catalysts. The Co3O4 catalysts were activated in the reaction medium, and a small amount of CuO was added to activate Co3O4 under the action of weaker reducers (NH3BH3, (CH2NH2BH3)2). The high activity of Co3O4 has been previously associated with its reduced states (nanosized CoBn). The performed DFT modeling shows that activating water on the metal-like surface requires overcoming a higher energy barrier compared to hydride activation. The novelty of this study lies in its focus on understanding the impact of the remaining cobalt oxide phase. The XRD, TPR H2, TEM, Raman, and ATR FTIR confirm the formation of oxygen vacancies in the Co3O4 structure in the reaction medium, which increases the amount of adsorbed water. The kinetic isotopic effect measurements in D2O, as well as DFT modeling, reveal differences in water activation between Co and Co3O4-based catalysts. It can be assumed that the oxide phase serves not only as a precursor and support for the reduced nanosized cobalt active component but also as a key catalyst component that improves water activation.

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Section: Introductionmentioning

confidence: 99%

Co and Co3O4 in the Hydrolysis of Boron-Containing Hydrides: H2O Activation on the Metal and Oxide Active Centers

Butenko,

Komova,

Simagina

et al. 2024

Materials

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“…As per the guidelines of the United States Department of Energy (DOE), by 2025, gravimetric and volumetric storage capacities are required to meet the target of 5.5 wt% and 40 g/L, at temperatures in the range of −40-60 • C and pressures up to 10 MPa [5]. Among many lightweight and high-capacity hydrogen storage materials (Figure 1) [15][16][17][18][19][20][21][22], magnesium is favored because of its theoretical hydrogen storage capacity of up to 7.6 wt% (110 kg/m 3 ), abundant resources, and low cost [13,[23][24][25][26][27]. However, its application is limited by its high dehydrogenation temperature (>300 • C) [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Experimentally Observed Nucleation and Growth Behavior of Mg/MgH2 during De/Hydrogenation of MgH2/Mg: A Review

2022

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With the increasing energy crisis and environmental problems, there is an urgent need to seek an efficient renewable energy source, and hydrogen energy is considered one of the most promising energy carriers. Magnesium is considered a promising hydrogen storage material due to its high hydrogen storage density, abundant resources, and low cost. However, sluggish kinetic performance is one of the bottlenecks hindering its practical application. The kinetic process of hydrogenation/dehydrogenation can be influenced by both external and internal factors, including temperature, pressure, elementary composition, particle size, particle surface states, irregularities in particle structure, and hydrogen diffusion coefficient. The kinetic performance of the MgH2/Mg system can be effectively improved by more active sites and nucleation centers for hydrogen absorption and desorption. Herein, we briefly review and discuss the experimentally observed nucleation and growth behavior of Mg/MgH2 during de/hydrogenation of MgH2/Mg. In particular, the nucleation and growth behavior of MgH2 during the hydrogenation of Mg is discussed from the aspect of temperature and hydrogen pressure.

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Confined ammonia borane nanocarriers: Tubular and fibrous structures based solid-state hydrogen storage composites

Aydın,

Coşkuner Filiz,

Kantürk Figen

2024

International Journal of Hydrogen Energy

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Catalytic Behavior of Iron-Containing Cubic Spinel in the Hydrolysis and Hydrothermolysis of Ammonia Borane

Cited by 6 publications

References 64 publications

Co and Co3O4 in the Hydrolysis of Boron-Containing Hydrides: H2O Activation on the Metal and Oxide Active Centers

Co and Co3O4 in the Hydrolysis of Boron-Containing Hydrides: H2O Activation on the Metal and Oxide Active Centers

Experimentally Observed Nucleation and Growth Behavior of Mg/MgH2 during De/Hydrogenation of MgH2/Mg: A Review

Confined ammonia borane nanocarriers: Tubular and fibrous structures based solid-state hydrogen storage composites

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