Novel asphalt-based carbon adsorbents with super-high adsorption capacity and excellent selectivity for separation for light hydrocarbons

Liang, Wanwen; Xiao, Huiyu; Lv, Daofei; Xiao, Jing; Li, Zhong

doi:10.1016/j.seppur.2017.08.052

Cited by 43 publications

(32 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dominant peak at 532.8 ± 0.5 eV is assigned to OH bonds of phenols, COC bonds of ethers, and CO bonds of ester and anhydride groups 38 . The peak at 533.5 ± 0.5 eV reflects the presence of the OCO group, while that at 536.7 ± 0.5 eV could be attributed to water 39 . Combining the results of XPS and FT‐IR analyses, it can be deduced that a majority of surface oxygen species are OH and COOH groups.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH₄ uptake by in situ ionic activation

Wang

et al. 2020

AIChE Journal

Self Cite

View full text Add to dashboard Cite

We introduce a straightforward method for the preparation of novel starch‐based ultramicroporous carbons (SCs) that demonstrate high CH4 uptake and excellent CH4/N2 selectivity. These SCs are derived from a combination of starch and 1–6 wt.% of acrylic acid, and the resulting materials are amenable to surface cation exchangeability as demonstrated by the formation of highly dispersed K+ in carbon precursors. Following activation, these SCs contain ultramicropores with narrow pore‐size distributions of <0.7 nm, leading to porous carbon‐rich materials that exhibit CH4 uptake values as high as 1.86 mmol/g at 100 kPa and 298 K, the highest uptake value for CH4 to date, with the IAST‐predicted CH4/N2 selectivity up to 5.7. Both the potential mechanism for the formation of the narrow pores and the origin of the favorable CH4 adsorption properties are discussed and examined. This work may potentially guide future designs for carbon‐rich materials with excellent gas adsorption properties.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The peak at 533.5 ± 0.5 eV reflects the presence of the O C O group, while that at 536.7 ± 0.5 eV could be attributed to water. 39 Combining the results of XPS and FT-IR analyses, it can be deduced that a majority of surface oxygen species are OH and COOH groups. The relative oxygen contents are listed in Table S2.…”

Section: Characterization Of Scsmentioning

confidence: 99%

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH₄ uptake by in situ ionic activation

Wang

et al. 2020

AIChE Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…The polarizability is considered as an important intrinsic property of a molecule that reflects the ability to generate instantaneous dipole related to Van der Waals interactions within the molecule, which dominate the interactions between the molecule and an adsorbent. [32,40] The polarizabilities of C 3 H 8 , C 2 H 6 and CH 4 are 62.9-63.7×10 25 , 44.3-44.7×10 25 , 25.93×10 25 cm -3 , respectively. [16] Therefore, C 3 H 8 and C 2 H 6 would likely exhibited stronger interaction towards the surface of Ni(TMBDC)(DABCO) 0.5 .…”

Section: Simulation Detailsmentioning

confidence: 99%

“…As shown in Figure 3(b), at low pressure region of 0 ˜15 kPa, the C 3 H 8 isotherm exhibits a steeply increasing trend in C 3 H 8 adsorption capacity and the uptake of each gas in Ni(TMBDC)(DABCO) 0.5 decreased in the order of C 3 H 8 > C 2 H 6 > CH 4 . It implies that the interaction between C 3 H 8 and Ni(TMBDC)(DABCO) 0.5 is the strongest, that of C 2 H 6 is in the second place, and that of CH 4 is the weakest, which is mainly determined by the property of CH 4 , C 2 H 6 and C 3 H 8 , especially molecule polarizabilities.The polarizability is considered as an important intrinsic property of a molecule that reflects the ability to generate instantaneous dipole related to Van der Waals interactions within the molecule, which dominate the interactions between the molecule and an adsorbent [32,40]. The polarizabilities of C 3 H 8 , C 2 H 6 and CH 4 are 62.9-63.7×10 25 , 44.3-44.7×10 25 , 25.93×10 25 cm -3 , respectively [16].…”

mentioning

confidence: 99%

A Stable Pillared-layer Metal-organic Framework for Recovery of C2H6 and C3H8 from Natural Gas

Wu¹,

Liu²,

Wang³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Separation and recovery of C2H6 and C3H8 from natural gas is a potentially economical but challenging subject in the petroleum industry. In this work, we report a stable pillared-layer microporous MOF, Ni(TMBDC)(DABCO)0.5 for the separation of C2H6 and C3H8 from natural gas. Ni(TMBDC)(DABCO)0.5 remained intact structure after exposure to humid air with RH = 100% for days. Derived from the combination of dense and accessible methyl group and methylene group in the channel, Ni(TMBDC)(DABCO)0.5 exhibited strong affinity toward C3H8 and C2H6, with remarkably high capacities of 2.80 mmol/g at 1 kPa and 3.37 mmol/g at 5 kPa for C3H8, as well as 2.93 mmol/g at 10 kPa for C2H6. Its IAST selectivities of C3H8/CH4 and C2H6/CH4 reached 274 and 29, respectively. The complete separation of CH4/C2H6/C3H8 ternary mixture on breakthrough experiment demonstrated the great potential on recovery of C2H6 and C3H8 from natural gas through a Ni(TMBDC)(DABCO)0.5 packed column.

show abstract

“…The adsorption of binary gas mixtures can be directly predicted from pure component adsorption data using ideal adsorbed solution theory (IAST) proposed by Myers and Prausnitz [27]. Many studies have confirmed the effectiveness of IAST to predict the adsorption of mixture gases on a variety of porous materials [28][29][30].…”

Section: Ideal Adsorbed Solutionmentioning

confidence: 99%

Adsorption Equilibrium and Thermodynamic Analysis of CO₂ and CH₄ on Qinshui Basin Anthracite

Sun

et al. 2019

Geofluids

View full text Add to dashboard Cite

Adsorption isotherms of CH4 and CO2 on Qinshui Basin anthracite were obtained at the temperatures of 283 K, 303 K, and 323 K using the gravimetric method. The feasibility of the displacement of CH4 by injecting CO2 on this anthracite was verified by calculating the selectivity factor of CO2 over CH4 (αCO2/CH4), adsorption affinities, and thermodynamic properties of CH4 and CO2. Results show that the values of αCO2/CH4 are more than 4.0. Henry’s constant (KH) of CH4 is smaller than that of CO2, and CH4 has a weaker affinity with coal surface. As temperature improves, KH of CO2 and CH4 decrease. Gibbs free energy change (ΔG) and surface potential (Ω) of CO2 are more negative than those of CH4, indicating that CO2 adsorption on anthracite is more spontaneous and favorable. The absolute values of Ω and ΔG of CH4 and CO2 increase with pressure rises. Isosteric heat of adsorption (Qst) of CH4 is lower than that of CO2. With increasing loading, Qst and entropy loss (ΔS) of CH4 decrease, while Qst and ΔS of CO2 increase. The higher ΔS of CO2 reveals that the adsorbed CO2 molecules constitute a more stable rearrangement than CH4 molecules. High temperature reduces ΔS of CH4 and CO2.

show abstract

Novel asphalt-based carbon adsorbents with super-high adsorption capacity and excellent selectivity for separation for light hydrocarbons

Cited by 43 publications

References 33 publications

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH₄ uptake by in situ ionic activation

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH₄ uptake by in situ ionic activation

A Stable Pillared-layer Metal-organic Framework for Recovery of C2H6 and C3H8 from Natural Gas

Adsorption Equilibrium and Thermodynamic Analysis of CO₂ and CH₄ on Qinshui Basin Anthracite

Contact Info

Product

Resources

About

Novel asphalt-based carbon adsorbents with super-high adsorption capacity and excellent selectivity for separation for light hydrocarbons

Cited by 43 publications

References 33 publications

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH4 uptake by in situ ionic activation

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH4 uptake by in situ ionic activation

A Stable Pillared-layer Metal-organic Framework for Recovery of C2H6 and C3H8 from Natural Gas

Adsorption Equilibrium and Thermodynamic Analysis of CO2 and CH4 on Qinshui Basin Anthracite

Contact Info

Product

Resources

About

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH₄ uptake by in situ ionic activation

Facile synthesis of ultramicroporous carbon adsorbents with ultra‐high CH₄ uptake by in situ ionic activation

Adsorption Equilibrium and Thermodynamic Analysis of CO₂ and CH₄ on Qinshui Basin Anthracite