2019
DOI: 10.1016/j.cej.2018.10.115
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Novel asphaltene-derived nanoporous carbon with N-S-rich micro-mesoporous structure for superior gas adsorption: Experimental and DFT study

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Cited by 74 publications
(26 citation statements)
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“…Hence, post-combustion CO 2 capture seems the only viable strategy to control CO 2 emission from these sectors and achieve the committed goals of the Paris Agreement. Among the different CO 2 separation and purification technologies available (e.g., absorption, , adsorption, , membrane separation, , and cryogenic distillation , ), chemical absorption using aqueous solvents has been the most reliable and therefore promising technology for large-scale post-combustion CO 2 capture (PCC). This is because the flexibility of chemical absorption processes in dealing with various CO 2 concentrations and feed rates make them favorable options for large-scale CO 2 capture from a range of point-sources.…”
Section: Introductionmentioning
confidence: 99%
“…Hence, post-combustion CO 2 capture seems the only viable strategy to control CO 2 emission from these sectors and achieve the committed goals of the Paris Agreement. Among the different CO 2 separation and purification technologies available (e.g., absorption, , adsorption, , membrane separation, , and cryogenic distillation , ), chemical absorption using aqueous solvents has been the most reliable and therefore promising technology for large-scale post-combustion CO 2 capture (PCC). This is because the flexibility of chemical absorption processes in dealing with various CO 2 concentrations and feed rates make them favorable options for large-scale CO 2 capture from a range of point-sources.…”
Section: Introductionmentioning
confidence: 99%
“…In detail, when the activation temperature or the amount of K 2 CO 3 increases, the content of N shows a decreasing trend, which is consistent with the literature reports. ,, The content of sulfur element in the samples does not show a significant change with the activation, which may be related to its relatively low content. Although it has been reported that S-doping of porous carbon can also increase the capacity for CO 2 capture, , since the S content involved in this article is relatively low, there is no further study on the effect of S.…”
Section: Resultsmentioning
confidence: 91%
“…Moreover, with the aggravated activation process, the intensity of N peak decreases, indicating the loss of unstable N species on the surface, which is consistent with the results of the elemental analysis. As shown in Figure a, the highly analytical C 1s spectra of CSC contain three peaks, including 284.6 (C–C/CC), 285.5 (C–N/C–O), and 288.1 eV (CO). ,, The highly analytical N 1s spectra of CSCX-Y were deconvoluted into two peaks around 398.3 eV (pyridinic-N) and 400.5 eV (pyrrolic-/pyridonic-N) (see Figure b and S7), which had been proven to be beneficial for CO 2 capture. …”
Section: Resultsmentioning
confidence: 97%
“…With the increase of the activation temperature and the mass of KOH, the N content of the prepared samples showed a downward trend, which can be attributed to the decomposition or consumption of certain thermally unstable nitrogen species in CSC, owing to the ascending activation intensity. , Furthermore, the N-containing functional groups which can provide nitrogen source in the materials are inferred by Fourier transform infrared (FT-IR) spectra (see Figure S6). Typically, the peaks at 3446, 2919, 1635, and 1039 cm –1 can be classified as N–H or O–H stretching vibrations, C–H stretching vibrations, N–H in-plane deformation vibrations, and C–O stretching vibrations (SO symmetry stretching vibrations), respectively. , …”
Section: Resultsmentioning
confidence: 99%
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