Volumetric hydrogen adsorption capacity of densified MIL-101 monoliths

Ardelean, O; Blăniţă, Gabriela; Borodi, Gheorghe; Lazăr, Mihaela D.; Mişan, Ioan; Coldea, I; Lupu, Dan

doi:10.1016/j.ijhydene.2013.03.161

Cited by 52 publications

(54 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hydrogen physisorption on metal-organic frameworks depends on their textural properties (surface area, pore volume) and crystalline structure [21]. Mechanical processes like ball milling and compression facilitate the transfer of known amounts energy transfer, function of pursued targets and they can be: (i) high-energy processes [31][32][33][34] as mechanochemical synthesis [35] and amorphization [36] of precursors or products, and (ii) low-energy processing [29] as reducing the interparticle voids and/or crystallites dimensions and increasing the contact between the components.…”

Section: Resultsmentioning

confidence: 99%

“…The volumes of the sample cell (empty and with sample) were calibrated with helium. The hydrogen adsorption for each step was calculated with the hydrogen equation of state [21], with the overall error ±0.01 wt.% H 2 .…”

Section: Ball Milled Composites Preparation and Hydrogen Adsorption Mmentioning

confidence: 99%

“…However, the paper does not report sample volumes measured with helium because the total hydrogen uptake calculations reported are based on the pore volume obtained from N 2 adsorption isotherms and it can be inferred that the same value was used in the calculations of excess adsorption. Experimental data on 10 MOFs [19] show that the pore volume from nitrogen or argon adsorption are generally different from that which can be calculated [20,21] [22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ball milling and compression effects on hydrogen adsorption by MOF:Pt/carbon mixtures

Blăniţă

Miheţ

Borodi

et al. 2015

Microporous and Mesoporous Materials

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Ball Milled Composites Preparation and Hydrogen Adsorption Mmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ball milling and compression effects on hydrogen adsorption by MOF:Pt/carbon mixtures

Blăniţă

Miheţ

Borodi

et al. 2015

Microporous and Mesoporous Materials

Self Cite

View full text Add to dashboard Cite

“…The basics of pressing are covered in substantial detail in papers and patents that focus on MOFs [27,[69][70][71][72][73][74][75][76][77][78][79]. The quality of the pellets created depends to a large extent on the mechanical properties of the MOF powders to be shaped.…”

Section: Pressingmentioning

confidence: 99%

“…In our previous reports, we presented pressed pellets of microporous UiO-66(Zr) and mesoporous MIL-100(Fe) (Figures 18.15 and 18.16) [27,69]. The UiO-66(Zr) pellet exhibited an interesting o-xylene preference in the liquid phase in addition to presenting overall reverse shape selectivity for the xylene isomers, and the MIL-100(Fe) pellet confirmed the preferential adsorption property of isobutane over propane and propylene, with an adsorption separation factor of 3 in multicomponent fixed-bed adsorption experiments.…”

Section: Pressingmentioning

confidence: 99%

Granulation and Shaping of Metal-Organic Frameworks

Lee

Valekar

Hwang

et al. 2016

The Chemistry of Metal-Organic Frameworks: Synthesis, Characterization, and Applications

View full text Add to dashboard Cite

IntroductionShaping and forming of metal-organic frameworks (MOFs) are essential for practical applications like adsorption/separation and catalysis, which require structuring of the nano-/microcrystalline fine powders of MOFs into a macroscopic body [1][2][3][4][5][6][7]. When a process for catalysis or adsorptive separation is scaled up to the pilot or commercial scale, the form in which an active catalyst or adsorbent is used is decisive in determining the ultimate performance of the unit [8][9][10]. In this respect, the size and shape of the target material require a compromise between minimizing pore diffusion effects in the material particles, for which small particles are necessary, and minimizing the pressure drop across the reactor, which requires large particle sizes [11]. The shaped MOFs should maintain excellent performance shown by the original powder forms based on their high porosity, crystallinity, and flexibility [12]. Therefore, the proper selection of the shaping or forming process is important in the MOF research field for chemical engineering and industrial applications. As the shaping methods are often proprietary and often more of an art than a science, the exact procedures are rarely disclosed.The shaped MOFs can also be prepared using techniques (Figure 18.1) that have typically been utilized for synthesizing catalysts and adsorbents from porous materials, such as pressing, extrusion, granulation and spray drying, foaming, casting, and coating. Well-shaped bodies have been produced in the forms of pellets, tablets, monoliths, granules, and spheres [13][14][15][16]. However, to utilize shaped MOFs successfully for industrial applications, they should have sufficient mechanical strength, chemical stability, attrition resistance, maximal bulk density, and minimal wasted space in the storage vessel [17][18][19][20][21][22][23][24]. As the performance of shaped MOFs for industrial or large-scale applications depends on several parameters, including the mass-and heat-transfer properties, gas diffusion kinetics, pressure drop across material, mechanical strength, and volumetric efficiency, achieving high mechanical integrity of the structured MOF is critical to the performance in real engineering processes. The Chemistry of Metal-Organic Frameworks: Synthesis, Characterization, and Applications, First Edition. Edited by Stefan Kaskel.

show abstract

Elucidating Improvements to MIL‐101(Cr)’s Porosity and Particle Size Distributions based on Innovations and Fine‐Tuning in Synthesis Procedures

Wee

Chinnappan

Ramakrishna

2023

Adv Materials Inter

View full text Add to dashboard Cite

Among the existing metal–organic frameworks (MOFs), MIL‐101(Cr) is renowned for its stability in air and water. As a result, MIL‐101(Cr) has numerous potential applications ranging from adsorptive cooling to catalysis. The industrial‐scale production of MIL‐101(Cr) is necessary before realizing these applications. Yet, there remain two main bottlenecks in preparing MIL‐101(Cr) in bulk: the toxicity of hydrofluoric acid (HF) used in conventional MIL‐101(Cr) synthesis and the challenge of ensuring that the as‐prepared MIL‐101(Cr) is highly porous with specific Brunauer–Emmett–Teller surface area (SBET) above 4000 m2 g−1. On the laboratory scale, MIL‐101(Cr) often presents SBET 2300–3500 m2 g−1. The synthesis and purification procedures often influence the yield, particle size, porosity, and other properties of MIL‐101(Cr). This critical review examines trends in MIL‐101(Cr) preparation procedures and the MOF's resulting properties to elucidate areas for improvement toward its real‐world applications. The purification processes for conventional HF‐based MIL‐101(Cr) whereby porosities vary despite the same synthesis approach are first investigated. Next, the reported additives for substituting HF and their influence on the resulting MIL‐101(Cr)’s porosity and particle size are discussed. The selection of additives may be application‐specific: exemplified in the examination of MIL‐101(Cr)’s preparation, its corresponding water sorption capacity, and desiccant‐related applications.

show abstract

Volumetric hydrogen adsorption capacity of densified MIL-101 monoliths

Cited by 52 publications

References 42 publications

Ball milling and compression effects on hydrogen adsorption by MOF:Pt/carbon mixtures

Ball milling and compression effects on hydrogen adsorption by MOF:Pt/carbon mixtures

Granulation and Shaping of Metal-Organic Frameworks

Elucidating Improvements to MIL‐101(Cr)’s Porosity and Particle Size Distributions based on Innovations and Fine‐Tuning in Synthesis Procedures

Contact Info

Product

Resources

About