Peculiarities of high-pressure hydrogen adsorption on Pt catalyzed Cu-BTC metal–organic framework

Chuvikov, Sergey V.; Berdonosova, Elena; Krautsou, A.; Kostina, Yu. V.; Минин, В. В.; Ugolkova, E. A.; Klyamkin, S. N.

doi:10.1039/d0cp03900d

Cited by 5 publications

(10 citation statements)

References 49 publications

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“…Most likely, this is due to the partial reversible transition of Cu 2+ to Cu 1+ in C300 under the influence of a reducing atmosphere 64 . The rising chemical potential of hydrogen at ultrahigh pressures can trigger some changes in the adsorption mechanism as it has been demonstrated in our recent work 33 . The second unusual phenomenon concerns the behavior of F300.…”

Section: Resultsmentioning

confidence: 59%

“…All studied materials, namely A100, F300, C300, Z1200, and Z377 of Basolite series were purchased from Sigma‐Aldrich. According to the chemical formula, each item is a commercial equivalent of previously studied MOF: aluminum 1,4‐benzenedicarboxylate, MIL‐53(Al), 29 iron(III) 1,3,5‐benzenetricarboxylate, MIL‐100(Fe), 30 copper 1,3,5‐benzenetricarboxylate, HKUST‐1, 31 zinc 2‐methylimidazolate, ZIF‐8, 33 and zinc 1,3,5‐benzenetribenzoate, MOF‐177, 9 respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Hydrogen adsorption and desorption isotherms were measured volumetrically on a Sieverts‐type experimental unit specifically designed for studies of solid‐gas reactions under ultra‐high pressures 32,33 . For detailed information on the measuring system and processing of experimental data, see SI.…”

Section: Methodsmentioning

confidence: 99%

“…This effect may be associated with a change in the nature of adsorption centers. It was demonstrated in 33,64 that structure-forming ions in the HKUST-1 framework can undergo a reversible transition from Cu 2+ to Cu + in a reducing atmosphere. It is likely that the observed peculiarities for C300, including specific adsorption heat variation with pressure, are related to this transition stimulated by the strongly increasing reactivity of hydrogen at high pressures.…”

Section: Heat Of Hydrogen Adsorptionmentioning

confidence: 99%

“…64 The rising chemical potential of hydrogen at ultrahigh pressures can trigger some changes in the adsorption mechanism as it has been demonstrated in our recent work. 33 The second unusual phenomenon concerns the behavior of F300. Unlike other studied MOFs, it demonstrates negative excess adsorption at pressures above 400 bar.…”

mentioning

confidence: 99%

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Assessment of high‐pressure hydrogen storage performance of Basolite metal‐organic frameworks

Chuvikov

Klyamkin

2022

Intl J of Energy Research

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Summary The hydrogen storage performance of a series of Basolite metal‐organic frameworks (MOFs) has been estimated within a pressure range up to 700 bar at temperatures from 77 to 293 K. Crystal structure and texture properties of the MOFs were determined using X‐ray diffraction and nitrogen cryoadsorption, respectively. Hydrogen excess adsorption isotherms were measured and then converted to gravimetric and volumetric total adsorption. To calculate the total volumetric capacity, the crystallographic density of materials for the theoretically maximum capacity was used. At 700 bar, the highest volumetric total adsorption was about 65 mg/cm3 shown by Z1200 and Z377. The heat of adsorption at 298 K vs pressure was evaluated by the Clausius‐Clapeyron equation. Peculiar adsorption behavior of C300 in the high‐pressure region manifested in specific forms of isotherms and baric dependence of the heat of adsorption has been revealed. The relation of this phenomenon with a possible transition from Cu2+ to Cu+ in the C300 framework under the reducing effect of hydrogen has been discussed. The upper‐pressure limit of the MOFs' effectiveness in hydrogen storage systems compared to adsorbent‐free compressed gas has been estimated and did not exceed 127 bar at 298 K and 82 bar at 77 K due to the large amount of hydrogen that remains adsorbed at release pressure 5 bar. It has been concluded that conventional testing methods based only on excess adsorption isotherm measurements give initial data on the surface interaction and do not reflect the actual amount of stored and deliverable hydrogen. Besides the excess adsorption, the density of the adsorbent and the low‐pressure capacity are the key factors defining the applicability of materials in high‐pressure storage systems.

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Section: Resultsmentioning

confidence: 59%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Heat Of Hydrogen Adsorptionmentioning

confidence: 99%

mentioning

confidence: 99%

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Assessment of high‐pressure hydrogen storage performance of Basolite metal‐organic frameworks

Chuvikov

Klyamkin

2022

Intl J of Energy Research

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High‐pressure methane storage on metal‐organic frameworks

Chuvikov,

Klyamkin

2023

Energy Storage

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Methane storage performance of a series of metal‐organic frameworks (MOFs) has been thoroughly examined over a wide pressure range up to 750 bar. Based on volumetric adsorption measurements, crystal structure and porous texture characterization, excess, total and working adsorption capacities, and heat of adsorption as functions of pressure have been evaluated. It has been found that the use of MOFs demonstrates a significant advantage in methane storage capacity over compressed gas, and the Gain can reach 300% to 400% depending on the pressure‐temperature operating conditions. However, the benefit of adsorption storage drops with increasing pressure. Even for the best MOF adsorbent, this methane storage method becomes technologically unreasonable above 280 bar. The data obtained allowed us to conclude that conventionally reported excess adsorption does not give a complete picture of the effectiveness of MOFs. Besides high specific surface area, optimal density of the skeleton and moderate heat of adsorption are required for the best storage performance.

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A Cu-BTC material encapsulated by chemical chromophore 1,3,6,8-tetrakis (p-benzoic acid) pyrene: Fluorescent sensing in recognition of the different ions

Tang

Zhao

You

et al. 2022

Journal of Molecular Structure

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Peculiarities of high-pressure hydrogen adsorption on Pt catalyzed Cu-BTC metal–organic framework

Abstract: Pt-Catalyst plays a key role in hydrogen adsorption by Cu-BTC at high pressures.

Cited by 5 publications

References 49 publications

Assessment of high‐pressure hydrogen storage performance of Basolite metal‐organic frameworks

Assessment of high‐pressure hydrogen storage performance of Basolite metal‐organic frameworks

High‐pressure methane storage on metal‐organic frameworks

A Cu-BTC material encapsulated by chemical chromophore 1,3,6,8-tetrakis (p-benzoic acid) pyrene: Fluorescent sensing in recognition of the different ions

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