Cyclic stability and structure of nanoconfined Ti-doped NaAlH 4

Paskevicius, Mark; Filsø, Uffe; Karimi, Fahim; Puszkiel, Julián; Pranzas, P. Klaus; Pistidda, Claudio; Hoell, Armin; Welter, Edmund; Schreyer, A.; Klassen, Thomas; Dornheim, Martin

doi:10.1016/j.ijhydene.2015.12.185

Cited by 16 publications

(6 citation statements)

References 44 publications

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“…Mesoporous carbon materials with amorphous or partially amorphous surfaces are another class of widely studied carbon scaffold. Notable examples include carbon aerogels (pore diameters of 2.8–30 nm) − with a network structure of interconnected nanovoids, templated mesoporous carbons (pore diameters of 4–10 nm), − and hierarchically porous carbon with multimodal pore size distributions (mean pore diameters of approximately 0.8–3.2 nm). , Synthesized through carbonization, they typically contain reactive carboxyl, carbonyl, and/or hydroxyl surface groups, allowing surface-mediated catalysis to occur under nanoconfinement.…”

Section: Nanoconfinement Architecturementioning

confidence: 99%

Environmental Applications of Engineered Materials with Nanoconfinement

et al. 2021

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Engineered nanoporous materials have been extensively employed in the environmental field to take advantage of increased surface area and tunable size exclusion. Beyond those benefits, recent studies have uncovered that the confinement of traditional environmental processes within several nanometer pores exerts unique nanoconfinement effects, such as enhanced adsorption capacity, reaction kinetics, and ion selectivity, compared to their analogous processes without spatial confinement. In this review, we provide a systematic discussion covering the current understanding of nanoconfinement effects reported across diverse fields using similar materials and structures as those being explored in environmental technologies. We further abstract the underlying fundamental physical and chemical principles including molecular orientation and rearrangement, reactive center creation, noncovalent binding, and partial desolvation. Finally, we establish connections between promising nanoconfinement observations and traditional environmental processes to identify challenges and opportunities for the development of innovative functional platforms for environmental applications.

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Section: Nanoconfinement Architecturementioning

confidence: 99%

Environmental Applications of Engineered Materials with Nanoconfinement

et al. 2021

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“…A series of notable advances have been observed for complex hydrides as well, although their details are beyond the scope of this review. In short, metal tetrahydridoaluminates/alanates [14,51]: LiAlH 4 [54,81,96,99,101,111,113,135,166,178], NaAlH 4 [33,45,50,69,74,82,[127][128][129]167,214,234,235], tetrahydridoborates/borohydrides [3,12,14,42]: LiBH 4 [42,45,47,54,56,70,78,81,87,89,91,93,99,100,104,106,108,120,123,130,…”

Section: Discussionmentioning

confidence: 99%

“…The overall enhancement of kinetic and thermodynamic parameters can be tuned by utilization of catalysts. This is usually implemented to improve behavior of systems that already show promising results including recyclability (Table 9) [19,20,34,43,57,65,68,77,82,92,102,108,113,118,120,125,131,132,134,136,139,143,147,158,160,[166][167][168]172,[183][184][185][186][187][188][189][190][191][192]194,[196][197][198][199][200][201][202][203]…”

Section: (Nano)catalyst Additionmentioning

confidence: 99%

Recent Development in Nanoconfined Hydrides for Energy Storage

Comănescu

2022

IJMS

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Hydrogen is the ultimate vector for a carbon-free, sustainable green-energy. While being the most promising candidate to serve this purpose, hydrogen inherits a series of characteristics making it particularly difficult to handle, store, transport and use in a safe manner. The researchers’ attention has thus shifted to storing hydrogen in its more manageable forms: the light metal hydrides and related derivatives (ammonia-borane, tetrahydridoborates/borohydrides, tetrahydridoaluminates/alanates or reactive hydride composites). Even then, the thermodynamic and kinetic behavior faces either too high energy barriers or sluggish kinetics (or both), and an efficient tool to overcome these issues is through nanoconfinement. Nanoconfined energy storage materials are the current state-of-the-art approach regarding hydrogen storage field, and the current review aims to summarize the most recent progress in this intriguing field. The latest reviews concerning H2 production and storage are discussed, and the shift from bulk to nanomaterials is described in the context of physical and chemical aspects of nanoconfinement effects in the obtained nanocomposites. The types of hosts used for hydrogen materials are divided in classes of substances, the mean of hydride inclusion in said hosts and the classes of hydrogen storage materials are presented with their most recent trends and future prospects.

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“…These preliminary studies have been followed by a number of studies on TiCl 3 based catalysts in order to understand the mechanism of catalysis, the effect of preparation method of catalyst etc. [183][184][185][186]. The studies were not only limited to TiCl 3 , several other halides and salts of Ti were also employed to enhance the sorption kinetics of NaAlH 4 such as Ti-Al [187,188], TiB 2 [189], TiC [190,191], TiF 3 [192], TiF 4 [193], TiN [194], Ti-oxides [195,196] etc.…”

Section: Catalysts For Alanatesmentioning

confidence: 99%

Catalytic Tuning of Sorption Kinetics of Lightweight Hydrides: A Review of the Materials and Mechanism

2018

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Hydrogen storage materials have been a subject of intensive research during the last 4 decades. Several developments have been achieved in regard of finding suitable materials as per the US-DOE targets. While the lightweight metal hydrides and complex hydrides meet the targeted hydrogen capacity, these possess difficulties of hard thermodynamics and sluggish kinetics of hydrogen sorption. A number of methods have been explored to tune the thermodynamic and kinetic properties of these materials. The thermodynamic constraints could be resolved using an intermediate step of alloying or by making reactive composites with other hydrogen storage materials, whereas the sluggish kinetics could be improved using several approaches such as downsizing and the use of catalysts. The catalyst addition reduces the activation barrier and enhances the sorption rate of hydrogen absorption/desorption. In this review, the catalytic modifications of lightweight hydrogen storage materials are reported and the mechanism towards the improvement is discussed.

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Cyclic stability and structure of nanoconfined Ti-doped NaAlH 4

Cited by 16 publications

References 44 publications

Environmental Applications of Engineered Materials with Nanoconfinement

Environmental Applications of Engineered Materials with Nanoconfinement

Recent Development in Nanoconfined Hydrides for Energy Storage

Catalytic Tuning of Sorption Kinetics of Lightweight Hydrides: A Review of the Materials and Mechanism

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