Effect of carbonization temperature on the physical properties and CO2 adsorption behavior of petroleum coke-derived porous carbon

Jang, Eunji; Choi, Seung Wan; Lee, Ki Bong

doi:10.1016/j.fuel.2019.03.051

Cited by 72 publications

(36 citation statements)

References 43 publications

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“…On the other hand, it was possible to identify trends of increasing CO 2 uptake with increasing volume of pores determined from the CO 2 adsorption isotherms ( V ult ; Supplementary Figure 2 ). Notwithstanding the low correlation coefficients ( R 2 ), especially in the case of adsorption at 0.15 bar, these results disclosed that, as already suggested by several authors (Presser et al, 2011 ; Wahby et al, 2012 ; Wei et al, 2012 ; Casco et al, 2013 ; Sevilla et al, 2013 ; Silvestre-Albero et al, 2014 ; Haffner-Staton et al, 2016 ; Serafin et al, 2017 ; Jang et al, 2019 ; Sreńscek-Nazzal and Kiełbasa, 2019 ), CO 2 adsorption at low pressure occurs mostly in narrow micropores, which can be more accurately probed by CO 2 adsorption experiments. Namely, CO 2 isotherms are usually acquired at much higher temperature (0°C) than N 2 isotherms (−196°C), which drastically reduce the diffusional restrictions.…”

Section: Resultssupporting

confidence: 82%

Tailoring Low-Cost Granular Activated Carbons Intended for CO2 Adsorption

2020

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Section: Resultssupporting

confidence: 82%

Tailoring Low-Cost Granular Activated Carbons Intended for CO2 Adsorption

2020

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“…The N 2 capture capacity was much lower than CO 2 capture, only 0.67 mmol/g at 1 bar. Studies have shown that the difference adsorption capacity between the CO 2 and N 2 is due to their different quadrupole moments . The adsorption performance of the samples is determined by the selective CO 2 adsorption over N 2 .…”

Section: Resultsmentioning

confidence: 99%

“…The adsorption performance of the samples is determined by the selective CO 2 adsorption over N 2 . The CO 2 /N 2 selectivity of activated carbon was calculated by the ideal adsorption solution theory (IAST) based on the Equation , which was used to predict the adsorption of CO 2 and N 2 mixtures based on a single gas adsorption isotherm of CO 2 and N 2 :

S_{{CO}_{2} / N_{2}} = \frac{q_{{CO}_{2}} / q_{{normalN}_{2}}}{p_{{CO}_{2}} / p_{{normalN}_{2}}}

…”

Section: Resultsmentioning

confidence: 99%

“…Studies have shown that the difference adsorption capacity between the CO 2 and N 2 is due to their different quadrupole moments. 54 The adsorption performance of the samples is determined by the selective CO 2 adsorption over N 2 . The CO 2 /N 2 selectivity of activated carbon was calculated by the ideal adsorption solution theory (IAST) based on the Equation (13), which was used to predict the adsorption of CO 2 and N 2 mixtures based on a single gas adsorption isotherm of CO 2 and N 2 54 :…”

Section: Co 2 Capture Performancementioning

confidence: 99%

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Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Quan

Gao

2020

Int J Energy Res

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Summary Biomass based carbon has captured more and more attention because it is environmentally friendly and has properties of low cost and ideal sustainability. In this study, three kinds of activated biomass carbons (ie, ABC‐700, ABC‐800 and ABC‐900) were first carbonized through pine sawdust pyrolysis and then activated using KOH under three different activation temperatures (ie, 700°C, 800°C and 900°C). The structure properties of the prepared activated biomass carbons were characterized by N2‐adsorption/desorption, SEM, TEM, XRD, Raman, XPS, TG and ultimate analysis. To clarify the activation mechanism, the gas products produced during KOH activation process were measured online with an ETG gas analyzer. The performance of the activated biomass carbons derived from pine sawdust for supercapacitor and CO2 capture was then evaluated. The predominant gas products during the activation process are H2 and CO. It indicates that the porous structure was created by using an enhanced etching reaction between carbon atoms and KOH. An increment of the activation temperature from 700 to 900°C results in the increase of surface area (from 1728.66 to 2330.89 m2/g) and total pore volume (from 0.671 to 1.914 cm3/g). Among the three samples, ABC‐900 exhibits the maximal specific capacitance of 175.6 F·g−1 and high energy density of 24.39 Wh·kg−1 at the 0.5 A·g−1. And the ABC‐700 shows the maximal CO2 capture capacity of 4.21 mmol/g and high selectivity of CO2 over N2 at 298 K and 1 bar. In addition, ABC‐700 also has excellent stability and reproducibility after 15 times adsorption‐desorption cycles. The unexceptionable electrochemical performance and adsorption capacity of the biomass‐carbons show its broad application prospects in the field of supercapacitors and CO2 capture.

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“…The G peak stands for a regular ordered state of graphitized carbon and the sp 2 stretching vibration [32]. In general, the degree of graphitization is closely related to the carbonization temperature, and increasing the carbonization temperature can effectively increase the degree of graphitization [33][34][35]. The presence of the D peak indicates the existence of a certain degree of amorphous carbon except for graphitized carbon.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Cobalt-Doped Porous Composites with Amorphous Carbon/Zn Shell for High-Performance Microwave Absorption

Jin

Zhang

et al. 2020

Nanomaterials

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A facile method for the preparation of microwave absorbers with low density, high microwave absorptivity, and broad band is of paramount importance to the progress in practical application. Herein, commonly-used metal organic frameworks (MOFs) prepared just by mechanical stirring in methanol at room temperature were chosen as sacrificial templates to synthesize porous carbon composites with tunable dielectric and magnetic properties. With the replacement of Co atoms on the surface of zeolitic imidazolate framework-67 (ZIF-67) by Zn atoms, a Co-doped porous carbon composite with a low-dielectric amorphous carbon/Zn shell was constructed after annealing, leading to excellent impedance matching condition. Consequently, the as-obtained composite (Co/C@C-800) shows marvelous microwave absorption properties with an absorption capacity of −43.97 dB and a corresponding effective absorption bandwidth of 4.1 GHz, far exceeding that of the traditional porous carbon and composites directly derived from ZIF-67. The results provide a convenient way to modify MOFs for enhanced microwave absorption materials from the synergy of dielectric and magnetic losses.

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Effect of carbonization temperature on the physical properties and CO2 adsorption behavior of petroleum coke-derived porous carbon

Cited by 72 publications

References 43 publications

Tailoring Low-Cost Granular Activated Carbons Intended for CO2 Adsorption

Tailoring Low-Cost Granular Activated Carbons Intended for CO2 Adsorption

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Facile Synthesis of Cobalt-Doped Porous Composites with Amorphous Carbon/Zn Shell for High-Performance Microwave Absorption

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Effect of carbonization temperature on the physical properties and CO2 adsorption behavior of petroleum coke-derived porous carbon

Cited by 72 publications

References 43 publications

Tailoring Low-Cost Granular Activated Carbons Intended for CO2 Adsorption

Tailoring Low-Cost Granular Activated Carbons Intended for CO2 Adsorption

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO 2 capture

Facile Synthesis of Cobalt-Doped Porous Composites with Amorphous Carbon/Zn Shell for High-Performance Microwave Absorption

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Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture