Estimation of system-level hydrogen storage for metal-organic frameworks with high volumetric storage density

Purewal, Justin; Veenstra, Mike; Tamburello, David; Ahmed, Alauddin; Matzger, Adam J.; Wong‐Foy, Antek G.; Seth, Saona; Liu, Yiyang; Siegel, Donald J.

doi:10.1016/j.ijhydene.2019.04.082

Cited by 68 publications

(71 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gel‐like solid of poly(6‐vinyl‐1,2,3,4‐tetrahydroquinoxaline) (PVHQX) was dehydrogenated with a small amount of γ‐butyrolactone (GBL) and Ir cat. For 5 h under 120°C and air, and was reversibly hydrogenated under 60°C and ambient hydrogen pressure 23‐28 . This study also shows a new aspect of polymer gels 29,30 as a hydrogen storage material.…”

Section: Introductionmentioning

confidence: 58%

Facile reversible hydrogenation of a poly(6‐vinyl‐2,3‐dimethyl‐1,2,3,4‐tetrahydroquinoxaline) gel‐like solid

Kaiwa

Oka

Nishide

et al. 2020

Polymers for Advanced Techs

View full text Add to dashboard Cite

Polymers bearing hydrogen storage units store hydrogen gas via chemical bond formation, and have inherent advantages as quasi‐solid polymeric hydrogen carriers, such as handling easiness and high safety. A recent study demonstrated that a poly(6‐vinyl‐1,2,3,4‐tetrahydroquinoxaline) gel‐like solid was dehydrogenated over 5 h under 120°C and air, and then the material was reversibly hydrogenated under 60°C and ambient hydrogen pressure in the presence of an iridium complex catalyst. The present work aimed to improve the dehydrogenation rate via the substitution of methyl groups for hydrogen atoms on carbon atoms adjacent to the nitrogen atoms in the quinoxaline unit. The dramatic improvement was attributed to the electron donating property of methyl group, and stabilization of the dehydrogenated state. The poly(6‐vinyl‐2,3‐dimethyl‐1,2,3,4‐tetrahydroquinoxaline) gel‐like solid was rapidly dehydrogenated within 2 h under the same mild conditions. This article provides a guideline for the molecular design of nitrogen heterocyclic compounds for rapid dehydrogenation.

show abstract

Section: Introductionmentioning

confidence: 58%

Facile reversible hydrogenation of a poly(6‐vinyl‐2,3‐dimethyl‐1,2,3,4‐tetrahydroquinoxaline) gel‐like solid

Kaiwa

Oka

Nishide

et al. 2020

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…133 Although, extremely high BET surface areas have been reported for synthesized MOFs, however, their low crystal densities have reduced its volumetric H 2 storage capacity. [138][139][140] In order to increase the volumetric H 2 storage capacity of MOFs, it is important to increase its volumetric surface area, and this can be accomplished by either reducing the pore size through catenation or forming a pellet or monolithics with relatively high bulk densities. Recently, Bambalaza et al 141 reported volumetric surface area of 919 and 1976 (m 2 /cm 3 ) for hydroxylated UiO-66 powder and pellet respectively.…”

Section: Mechanism Of Hydrogen Adsorption Of Mofsmentioning

confidence: 99%

“…However, the adsorption capacities of the samples decreased with increase densities 69 The optimal density that corresponds to better adsorption capacity for all the compacted MOFs was found to be in the range of 0.21 to 0.24 g/cm 3 . Recently, Purewal et al 139 but the thermal conductivity as well as the crystal structure of the pellet were enhanced. 77 Blanita et al 154 also attempt to improve the hydrogen storage of HKUST-1 by ball milling Pt/AC in the MOF.…”

Section: Volumetric and Gravimetric H 2 Capacities Of Densified High Performing Mofsmentioning

confidence: 99%

“…On the F I G U R E 6 Excess H 2 adsorption isotherms measured at 77K for SNU-70 (left), MOF-177 (center) and MOF-5 (right), after compacting MOFs to specified densities. The powders were densified by uniaxial compaction directly inside the sample cell using a manual pellet press 139 [Colour figure can be viewed at wileyonlinelibrary.com] other hand, low hydrogen permeability in dense monolithic MOFs also limits it performance in application. 139…”

Section: Limitations Of Synthesized Mofs As H 2 Storage Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Recent advancement in consolidation of MOFs as absorbents for hydrogen storage

2021

View full text Add to dashboard Cite

Metal-organic frameworks (MOF) have emerged as a promising material for green engineering applications due to their attractive properties. But the successful implementation of this material in the field of fuel cell technologies is still a challenge. Researchers have reported more than 50% reduction in experimental bulk density of compacted MOFs relatively to their theoretical crystal density. This has resulted in reduction of gravimetric and volumetric H 2 storage capacities of MOFs. Significant experimental research should be directed toward the consolidation of MOFs to meet (6.5 wt%; 50 g/L) 2025 DoE target for onboard H 2 storage systems. We present an overview of green engineering materials for hydrogen storage systems. The review also summarizes recent advancement in the consolidation of MOFs as absorbents for hydrogen storage. The influence of densification techniques on MOFs textural properties, mechanical stability were discussed. Hydrogen storage capacity of both powder and densified high-performance MOFs were presented.

show abstract

“…New porous components, for instance, metal-organic frameworks (MOFs), constitute an interesting category of crystalline components [1][2][3][4] that are based on the combination of metallic clusters or ions with complex organic connectors, forming extended sequenced networks [5][6][7][8][9]. Significant research attention has been accorded to MOFs because of their low density [10][11][12], adsorption capacity [13], chemical and thermal stabilities [14], large surface area [15], high porosity [16,17], and large-sized pores [18]. eir three-dimensional (3D) crystalline structures are made from organic linkers, metallic clusters, or metallic ions [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Polycarbonate Microchip Containing CuBTC-Monopol Monolith for Solid-Phase Extraction of Dyes

Alzahrani

2020

International Journal of Analytical Chemistry

View full text Add to dashboard Cite

In the present study, preparation of CuBTC-monopol monoliths for use within the microchip solid phase extraction was undertaken through a 20-min UV lamp-assisted polymerization for 2,2-dimethoxy-2-phenyl acetophenone (DMPA), butyl methacrylate (BMA), and ethylene dimethacrylate (EDMA) alongside inclusion of the porogenic solvent system (1-propanol and methanol (1 : 1)). The resultant coating underwent coating using CuBTC nanocrystals in ethanolic solution of ethanolic solution of 1,3,5-benzenetricarboxylic acid (H3BTC, 10 mM) and 10 mM copper(II) acetate Cu(CH3COO)2. This paper reports enhanced extraction, characterization, and synthesis studies for porous CuBTC metal organic frameworks that are marked by different methods including SEM/EDAX analysis, atomic force microscopy (AFM), and Fourier-transform infrared spectroscopy (FT-IR). The evaluation of the microchip’s performance was undertaken as sorbent through retrieval of six toxic dyes (anionic and cationic dyes). Various parameters (desorption and extraction step flow rates, volume of desorption solvent, volume of sample, and type of desorption solvent) were examined to optimize dye extraction using fabricated microchips. The result indicated that CuBTC-monopol monoliths were permeable with the ability of removing impurities and attained high toxic dye extraction recovery (83.4–99.9%). The assessment of reproducibility for chip-to-chip was undertaken by computing the relative standard deviations (RSDs) of the six dyes in extraction. The interbatch and intrabatch RSDs ranged between 3.8 and 6.9% and 2.3 and 4.8%. Such features showed that fabricated CuBTC-monopol monolithic disk polycarbonate microchips have the potential of extracting toxic dyes that could be utilized for treating wastewater.

show abstract

Estimation of system-level hydrogen storage for metal-organic frameworks with high volumetric storage density

Cited by 68 publications

References 34 publications

Facile reversible hydrogenation of a poly(6‐vinyl‐2,3‐dimethyl‐1,2,3,4‐tetrahydroquinoxaline) gel‐like solid

Facile reversible hydrogenation of a poly(6‐vinyl‐2,3‐dimethyl‐1,2,3,4‐tetrahydroquinoxaline) gel‐like solid

Recent advancement in consolidation of MOFs as absorbents for hydrogen storage

Polycarbonate Microchip Containing CuBTC-Monopol Monolith for Solid-Phase Extraction of Dyes

Contact Info

Product

Resources

About