Methane adsorption on various metal-organic frameworks and determination of the average adsorption heats at supercritical temperatures and pressures

Прибылов, А. А.; Murdmaa, K. O.; Соловцова, О. В.; Knyazeva, M. K.

doi:10.1007/s11172-018-2293-2

Cited by 12 publications

(2 citation statements)

References 5 publications

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“…The sorptions of CO 2 by TAPM-8 Den and TAPM-4 Den at 273 and 298 K ( Figure S3 ) are used to calculate the isosteric heat for CO 2 sorption ( Q st ) using the virial method ( Section S1 ) [ 31 , 32 , 33 , 34 ] The Q st value for TAPM-8 Den was measured as 26.5 kJ/mol at zero coverage, and the Q st value for TAPM-4 Den is 27.2 kJ/mol at zero coverage ( Figure 6 ). Both Q st values gradually decrease when more CO 2 is adsorbed by dendrimers TAPM-8 Den and TAPM-4 Den .…”

Section: Resultsmentioning

confidence: 99%

Dendrimers with Tetraphenylmethane Moiety as a Central Core: Synthesis, a Pore Study and the Adsorption of Volatile Organic Compounds

Tzeng

Chien

et al. 2022

IJMS

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Reasonable yields of two dendrimers with central tetraphenylmethane and peripheral 3,5-di-(tert-butanoylamino)benzoylpiperazine moieties are prepared. These dendrimers have a void space in the solid state so they adsorb guest molecules. Their BET values vary, depending on the H-bond interaction between the peripheral moiety and the gas molecules, and the dendritic framework that fabricates the void space is flexible. In the presence of polar gas molecules such as CO2, the BET increases significantly and is about 4–8 times the BET under N2. One dendrimer adsorbs cyanobenzene to a level of 436 mg/g, which, to the authors’ best knowledge, is almost equivalent to the highest reported value in the literature.

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Section: Resultsmentioning

confidence: 99%

Dendrimers with Tetraphenylmethane Moiety as a Central Core: Synthesis, a Pore Study and the Adsorption of Volatile Organic Compounds

Tzeng

Chien

et al. 2022

IJMS

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“…To further understand why dendrimers 2 and 3 have different adsorbing ability in pyridine, the isosteric heats of CO 2 sorption ( Q st ) were calculated by the virial method ( Scheme S1 ) [ 41 , 42 , 43 , 44 ]. Based on the CO 2 adsorptions at 273 K and 298 K ( Figure 4 ), the Q st of 3 was measured to be 35.8 kJ/mol at zero coverage, and the Q st of 2 was only 25.9 kJ/mol at zero coverage ( Figure 7 ).…”

Section: Resultsmentioning

confidence: 99%

Adsorbing Volatile Organic Chemicals by Soluble Triazine-Based Dendrimers under Ambient Conditions with the Adsorption Capacity of Pyridine up to 946.2 mg/g

Chien

Hsu

et al. 2021

Molecules

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Two triazine-based dendrimers with peripheral 1,3,5-triamidobenzene (1-3-5-TAB) functionality were prepared, and their void spaces in the bulk solid were investigated. We examined dendrimers of three core lengths and determined the one with the longest core exhibits the largest void space because the peripheral amides were not imbedded in the internal space of each dendritic molecule. The new dendrimers as solids were observed to adsorb volatile organic chemicals efficiently. Importantly, because the dendrimers are soluble in organic solvents, the adsorbed VOCs can be quantified by 1H-NMR spectroscopy by choosing a chemical shift (δ) of dendrimers as the internal standard to exclude interfering impurity signals, a much simpler and more efficient protocol than the traditional GC technique for the VOC quantification. One dendrimer was found to adsorb 24 equivalents of pyridine, so its adsorption capacity is equivalent to 946.2 mg/g. This is a more than 2-fold increase than the reported values by other porous materials.

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Adsorption of gases on a polymer adsorbent MN-200 in the region of supercritical temperatures and pressures

Прибылов

Murdmaa

2019

Russ Chem Bull

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Methane adsorption on various metal-organic frameworks and determination of the average adsorption heats at supercritical temperatures and pressures

Cited by 12 publications

References 5 publications

Dendrimers with Tetraphenylmethane Moiety as a Central Core: Synthesis, a Pore Study and the Adsorption of Volatile Organic Compounds

Dendrimers with Tetraphenylmethane Moiety as a Central Core: Synthesis, a Pore Study and the Adsorption of Volatile Organic Compounds

Adsorbing Volatile Organic Chemicals by Soluble Triazine-Based Dendrimers under Ambient Conditions with the Adsorption Capacity of Pyridine up to 946.2 mg/g

Adsorption of gases on a polymer adsorbent MN-200 in the region of supercritical temperatures and pressures

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