Low-temperature ammonia decomposition catalysts for hydrogen generation

Mukherjee, Shreya; Devaguptapu, Surya V.; Sviripa, Anna; Lund, C.R.F.; Wu, Gang

doi:10.1016/j.apcatb.2017.12.039

Cited by 413 publications

(225 citation statements)

References 162 publications

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“…However, the generally high loading amount ( > 4 wt%) of Ru [4,7,8] largely limits its wide application because of cost. Transition metal catalysts specially Co-, Ni-and Fe-based materials also exhibit good activity, which could be promising catalysts for decomposition of ammonia [6,8,16] . While, the catalytic performance of transition metal catalysts still need to be further improved.…”

Section: Introductionmentioning

confidence: 99%

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia

Wang

Zhao

et al. 2019

Journal of Energy Chemistry

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Section: Introductionmentioning

confidence: 99%

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia

Wang

Zhao

et al. 2019

Journal of Energy Chemistry

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“…CO causes deactivation of the H 2 fuel cell electrodes and CO 2 has many environmental impacts . Ammonia decomposition was reported as a potential clean H 2 production process since the reaction produces H 2 without CO and CO 2 emissions as shown in equation

true 2 NH_{3} \leftrightarrow normalN_{2} + 3 H_{2} Δ normalH_{rxn} = + 46 kJ / mol

…”

Section: Introductionmentioning

confidence: 99%

Effect of Magnetic Inducement in Preparation of Ni/Ce‐doped Al₂O₃ for Ammonia Decomposition

et al. 2019

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Catalytic activity of Ni catalysts for NH3 decomposition can be enhanced by using Ce‐doped Al2O3 support. Magnetic inducement during sol‐gel preparation of supports was studied to enhance the Ce dispersion in Al2O3 framework. In this study, the same poles and different pole of magnetic arrangement were applied during the sol‐gel preparation. Ni catalysts over the supports were investigated for the NH3 decomposition activity along with catalyst and support properties, including Ce dispersion in Al2O3 framework, Ni dispersion, acidic sites, basic sites, and reaction kinetics. The magnetic inducement can control the Ce composition and uniformity in the Al2O3 framework. The Ni/Ce‐doped Al2O3 prepared under the same poles of magnetic inducement show significant improvements in Ni dispersion, and yield highest catalytic activity due to a high Ce composition and uniformity in the framework, as well as the high Lewis basic sites which enhance the limiting step of NH3 decomposition. Thus, combination of the partial doping with magnetic inducement provides a novel approach with low cost to improve the activity of Ni catalyst without changing the reaction mechanism.

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“…Hydrogen has attracted attention as a renewable energy source due to its environmental friendliness and high calorific value. Many methods have been used to produce hydrogen . Among these strategies, the reaction between metal and water could represent a valid technique for in situ hydrogen production.…”

Section: Introductionmentioning

confidence: 99%

“…Many methods have been used to produce hydrogen. [1][2][3] Among these strategies, the reaction between metal and water could represent a valid technique for in situ hydrogen production. The drawback is that no hydrogen is produced by the reaction of Al or Mg with pure water at ambient temperature due to the formation of an oxide film, which must be destroyed to allow the Al─H 2 O or Mg─H 2 O reactions to occur.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of the fresh Co, Ni, and anion ions on aluminum or magnesium with water reactions

et al. 2018

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Summary To analyze the effect of Co and Ni on hydrogen generation in water, the reactions of Mg and Al with water in CoCl2 and NiCl2 solutions are studied in terms of amount of H2 produced and rate of reaction. Mg rapidly reacts with water in CoCl2 and NiCl2, producing high amount of H2 without induction time. While there is a short induction time is detected for Al─H2O reaction in CoCl2 and NiCl2. In addition to the galvanic cell behavior of the Mg (Al)/Co (Ni) compounds formed, Co and Ni catalyze the hydrogen production reaction; however, the agglomeration of Co or Ni leads to a noticeable decrease in H2 production. The open‐circuit potential in CoCl2 and NiCl2 solutions after the addition of Mg or Al at ambient temperature shows an obvious change, coinciding with the initiation of the hydrogen generation process. Mg rapidly reacts with water in Co (Ac)2, CoSO4, Ni (Ac)2 and NiSO4 solutions as a consequence of its intrinsic metallic properties and of the formation of Co or Ni. The hydrogen production amount is lower (<200 ml g−1) in Co (NO3)2 and Ni (NO3)2, even after adding NaCl. No reaction occurs when adding Al in CoSO4, Co (Ac)2, Co (NO3)2, NiSO4, Ni (Ac)2, and Ni (NO3)2. The synergistic effect of Co, Ni, and anion ions in water affects the rate of Al or Mg corrosion and hydrogen generation.

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Low-temperature ammonia decomposition catalysts for hydrogen generation

Cited by 413 publications

References 162 publications

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia

Effect of Magnetic Inducement in Preparation of Ni/Ce‐doped Al₂O₃ for Ammonia Decomposition

Synergistic effect of the fresh Co, Ni, and anion ions on aluminum or magnesium with water reactions

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Low-temperature ammonia decomposition catalysts for hydrogen generation

Cited by 413 publications

References 162 publications

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia

Transition metal nanoparticles supported La-promoted MgO as catalysts for hydrogen production via catalytic decomposition of ammonia

Effect of Magnetic Inducement in Preparation of Ni/Ce‐doped Al2O3 for Ammonia Decomposition

Synergistic effect of the fresh Co, Ni, and anion ions on aluminum or magnesium with water reactions

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Effect of Magnetic Inducement in Preparation of Ni/Ce‐doped Al₂O₃ for Ammonia Decomposition