Design strategies for shape-controlled nanocatalysts for efficient dehydrogenation of ammonia borane: A review

Li, Xiang; Zhang, Jiahao; Liu, Junhui; Wang, Songtao; Song, Yakun; Zhang, Jun

doi:10.1016/j.jallcom.2023.171001

Cited by 7 publications

(2 citation statements)

References 106 publications

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“…Currently, typical catalysts for AB hydrolysis are derived from NM and non-NM, respectively, as described in the precedent reviews [63], [64], [65], [66], [67], [68], [69], [70], [71], [72], [73], [74], [75], [76], [77], [78], [79], [80], [81], [82], [83]. Although NM catalysts generally exhibit high catalytic activity, their high cost and rarity make them unsuitable for large-scale industrial applications.…”

Section: Nh3bh3 + 2h2o = 3h2 + Nh4bo2mentioning

confidence: 99%

Hydrogen Generation via Catalytic Ammonia Borane Hydrolysis: A Patent Overview

Matsuda

2024

Preprint

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Hydrogen is one of the clean energies that will play an important role in energy selection for the coming low-carbon society. Ammonia borane (NH3BH3, abbreviated hereafter as AB) is considered as a promising hydrogen storage material due to its high hydrogen content (19.6 wt%), stability under ambient conditions (white powder), and favorable properties in dehydrogenation. AB can release hydrogen via pyrolysis, alcoholysis, hydrolysis, etc. Among these, AB hydrolysis is a safe and effective route, as it proceeds under mild conditions in the presence of an appropriate catalyst without the need for additional heat sources. For practical application, it is important to develop an efficient catalyst that further improves the hydrolytic dehydrogenation properties of AB. Many papers and reviews have been published, suggesting the research is at an advanced stage. On the other hand, since new technologies are often patented before they are put into practical use, the status of patent publication is of significant interest. This mini-review analyzes patent applications published up to 2023 on hydrogen generation via catalytic AB hydrolysis. The patent search yielded 99 patent publications, which were examined not only by country and research institution but also by two representative types of catalysts derived from noble metal (abbreviated hereafter as NM) and non-NM. Based on the analysis, future research and development was discussed.

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Section: Nh3bh3 + 2h2o = 3h2 + Nh4bo2mentioning

confidence: 99%

Hydrogen Generation via Catalytic Ammonia Borane Hydrolysis: A Patent Overview

Matsuda

2024

Preprint

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“…Chemical hydrogen storage materials, such as ammonia borane (AB) [3,4], formic acid [5,6] and sodium borohydride [7], offer mild hydrogen release and relatively safe transport, presenting significant potential for large-scale practical applications of hydrogen energy [8,9]. Among chemical hydrogen storage materials, non-toxic and stable AB can exhibit an exceptionally high hydrogen storage amount and density (19.6 wt% and 146 g L −1 ) [10]. It is one of the most competitive candidates among chemical hydrogen storage materials [11].…”

Section: Introductionmentioning

confidence: 99%

Exploring Enhanced Hydrolytic Dehydrogenation of Ammonia Borane with Porous Graphene-Supported Platinum Catalysts

Xu,

Sun,

Chen

2024

Molecules

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Graphene is a good support for immobilizing catalysts, due to its large theoretical specific surface area and high electric conductivity. Solid chemical converted graphene, in a form with multiple layers, decreases the practical specific surface area. Building pores in graphene can increase specific surface area and provide anchor sites for catalysts. In this study, we have prepared porous graphene (PG) via the process of equilibrium precipitation followed by carbothermal reduction of ZnO. During the equilibrium precipitation process, hydrolyzed N,N-dimethylformamide sluggishly generates hydroxyl groups which transform Zn2+ into amorphous ZnO nanodots anchored on reduced graphene oxide. After carbothermal reduction of zinc oxide, micropores are formed in PG. When the Zn2+ feeding amount is 0.12 mmol, the average size of the Pt nanoparticles on PG in the catalyst is 7.25 nm. The resulting Pt/PG exhibited the highest turnover frequency of 511.6 min−1 for ammonia borane hydrolysis, which is 2.43 times that for Pt on graphene without the addition of Zn2+. Therefore, PG treated via equilibrium precipitation and subsequent carbothermal reduction can serve as an effective support for the catalytic hydrolysis of ammonia borane.

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Size and Morphology Dependent Activity of Cu Clusters for CO₂ Activation and Reduction: A First Principles Investigation

Amin,

Krishnamurty,

Ahmad Dar

et al. 2024

ChemPhysChem

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Various Cu‐based materials in diverse forms have been investigated as efficient catalysts for electrochemical reduction of CO2; however, they suffer from issues such as higher over potential and poor selectivity. The activity and selectivity of CO2 electro reduction have been shown to change significantly when the surface morphology (steps, kinks, and edges) of these catalysts is altered. In light of this, size and morphology dependent activity of selected copper clusters, Cun (n=2‐20) have been evaluated for the activation and reduction of CO2 molecule. The phase‐space of these copper clusters is rich in conformations of distinct morphologies starting from planar, 2D geometries to prolate‐shaped geometries and also high‐symmetry structures. The binding efficiency and the activation of CO2 are highest for medium sized clusters (n=9‐17) with prolate‐morphologies as compared to small or larger sized CunCO2 clusters that are existing mainly as planar (triangular, tetragonal etc.) or highly‐symmetric geometries (icosahedron, capped‐icosahedron etc.), respectively. The best performing (prolate‐shaped) CunCO2 conformations are quite fluxional and also they are thermally stable, as demonstrated by the molecular dynamics simulations. Furthermore, on these CunCO2 conformations, the step‐by‐step hydrogenation pathways of CO2 to produce value‐added products like methanol, formic acid, and methane are exceptionally favorable and energy‐efficient.

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Design strategies for shape-controlled nanocatalysts for efficient dehydrogenation of ammonia borane: A review

Cited by 7 publications

References 106 publications

Hydrogen Generation via Catalytic Ammonia Borane Hydrolysis: A Patent Overview

Hydrogen Generation via Catalytic Ammonia Borane Hydrolysis: A Patent Overview

Exploring Enhanced Hydrolytic Dehydrogenation of Ammonia Borane with Porous Graphene-Supported Platinum Catalysts

Size and Morphology Dependent Activity of Cu Clusters for CO₂ Activation and Reduction: A First Principles Investigation

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Design strategies for shape-controlled nanocatalysts for efficient dehydrogenation of ammonia borane: A review

Cited by 7 publications

References 106 publications

Hydrogen Generation via Catalytic Ammonia Borane Hydrolysis: A Patent Overview

Hydrogen Generation via Catalytic Ammonia Borane Hydrolysis: A Patent Overview

Exploring Enhanced Hydrolytic Dehydrogenation of Ammonia Borane with Porous Graphene-Supported Platinum Catalysts

Size and Morphology Dependent Activity of Cu Clusters for CO2 Activation and Reduction: A First Principles Investigation

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Size and Morphology Dependent Activity of Cu Clusters for CO₂ Activation and Reduction: A First Principles Investigation