Untitled

Прибылов, А. А.; Kalinnikova, I. A.; Regent, N. I.

doi:10.1023/a:1024492024167

Cited by 7 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, for the ad sorption of carbon dioxide, methane, and xenon 2-4 on the PAC 10 microporous carbon adsorbent, the adsorp tion isosteres are linear at 120-600 K and in a pressure range of 0.1-20•10 6 Pa. Linearity of the isosteres is re tained to 150 MPa for the SF 6 -microporous carbon ad sorbent AC71 system. 18 The Dubinin-Nikolaev method 12 was used to calcu late the limiting amount adsorbed (a 0 ) along the line of saturated vapor pressure.…”

Section: Resultsmentioning

confidence: 99%

Carbon dioxide adsorption on the microporous ACC carbon adsorbent

et al. 2005

View full text Add to dashboard Cite

Adsorption isotherms of carbon dioxide on the microporous ACC carbon adsorbent and the adsorption deformation of the adsorbent were measured. The heats of adsorption at tempera tures raising from 243 to 393 K and pressures from 1 to 5•10 6 Pa were measured. In the low temperature region (243 K), an increase in the amount adsorbed is accompanied by adsorbent contraction, and at high micropore fillings (а > 10 mmol g -1 ) the ACC carbon adsorbent expands. At high temperatures, adsorbent expansion is observed in the whole region of micropore filling. At 243 K in the low filling region (а < 1 mmol g -1 ), the heat of adsorption decreases smoothly from 27 to 24 kJ mol -1 . The heat of adsorption remains virtually unchanged in the interval 2 mmol g -1 < а < 11 mmol g -1 and then decreases to 8 kJ mol -1 at а = 12 mmol g -1 .Taking into account the nonideal character of the gas phase and adsorbent deformation the heats of adsorption are strongly temperature dependent in a region of high pressures.

show abstract

Section: Resultsmentioning

confidence: 99%

Carbon dioxide adsorption on the microporous ACC carbon adsorbent

et al. 2005

View full text Add to dashboard Cite

show abstract

“…The E ads for SF 6 ranged between 23.6 and 27.3 kJ/mol, and 22.8 and 26.9 kJ/mol, for PC-CaCit and PC-MgCit, respectively, at the tested levels of loading (Figure b,d). The numbers confirmed that SF 6 was weakly physisorbed on PC-CaCit and PC-MgCit …”

Section: Resultsmentioning

confidence: 58%

Hierarchical Porous Carbon Synthesized from Novel Porous Amorphous Calcium or Magnesium Citrate with Enhanced SF₆ Uptake and SF₆/N₂ Selectivity

Sun

Tai

Strömme

et al. 2019

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The emission of greenhouse gases such as CO 2 and SF 6 is believed to contribute significantly toward global warming. One way to reduce their release is by adsorption at point sources using a suitable adsorbent. In this work we present the synthesis of two hierarchical porous carbon materials (referred to as PC-CaCit and PC-MgCit) with a high uptake of SF 6 (5.23 mmol/g, 0 °C, 100 kPa) and a reasonable uptake of CO 2 (>3 mmol/g). PC-CaCit and PC-MgCit were obtained by pyrolysis of the most porous calcium citrate and magnesium citrate ever reported, which were synthesized by us. The Langmuir specific surface area of PC-CaCit and PC-MgCit was over 2000 m 2 /g (BET surface area also close to 2000 m 2 /g). We characterized PC-CaCit and PC-MgCit using a range of advanced characterization techniques including N 2 adsorption, highresolution electron microscopy, powder X-ray diffraction, and X-ray photoelectron spectroscopy. PC-CaCit and PC-MgCit also showed a SF 6 -over-N 2 selectivity of ∼33 at 0 °C (100 kPa), good cyclic performance, and moderately low heat of adsorption. The porous carbons synthesized in this work are good candidate adsorbents for greenhouse gases.

show abstract

“…An SF 6 admixture to freons decreases the boiling temperature of halones, and this property is used in refrigeration engineering [2].…”

Section: Introductionmentioning

confidence: 99%

“…According to the Intergovernmental Panel on Climate Change, SF 6 is the most potent greenhouse gas [1]. SF 6 admixture into freons decreases the boiling temperature of halones, and this property is used in refrigeration engineering [2].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of the carbon surface chemical composition on Dubinin–Astakhov equation parameters calculated from SF₆adsorption data—grand canonical Monte Carlo simulation

Furmaniak¹,

Terzyk²,

Gauden³

et al. 2011

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Using grand canonical Monte Carlo simulation we show, for the first time, the influence of the carbon porosity and surface oxidation on the parameters of the Dubinin-Astakhov (DA) adsorption isotherm equation. We conclude that upon carbon surface oxidation, the adsorption decreases for all carbons studied. Moreover, the parameters of the DA model depend on the number of surface oxygen groups. That is why in the case of carbons containing surface polar groups, SF(6) adsorption isotherm data cannot be used for characterization of the porosity.

show abstract

Untitled

Cited by 7 publications

References 4 publications

Carbon dioxide adsorption on the microporous ACC carbon adsorbent

Carbon dioxide adsorption on the microporous ACC carbon adsorbent

Hierarchical Porous Carbon Synthesized from Novel Porous Amorphous Calcium or Magnesium Citrate with Enhanced SF₆ Uptake and SF₆/N₂ Selectivity

The influence of the carbon surface chemical composition on Dubinin–Astakhov equation parameters calculated from SF₆adsorption data—grand canonical Monte Carlo simulation

Contact Info

Product

Resources

About

Untitled

Cited by 7 publications

References 4 publications

Carbon dioxide adsorption on the microporous ACC carbon adsorbent

Carbon dioxide adsorption on the microporous ACC carbon adsorbent

Hierarchical Porous Carbon Synthesized from Novel Porous Amorphous Calcium or Magnesium Citrate with Enhanced SF6 Uptake and SF6/N2 Selectivity

The influence of the carbon surface chemical composition on Dubinin–Astakhov equation parameters calculated from SF6adsorption data—grand canonical Monte Carlo simulation

Contact Info

Product

Resources

About

Hierarchical Porous Carbon Synthesized from Novel Porous Amorphous Calcium or Magnesium Citrate with Enhanced SF₆ Uptake and SF₆/N₂ Selectivity

The influence of the carbon surface chemical composition on Dubinin–Astakhov equation parameters calculated from SF₆adsorption data—grand canonical Monte Carlo simulation