Impregnation of palm shell-based activated carbon with sterically hindered amines for CO2 adsorption

Lee, C.S.; Ong, Y.L.; Aroua, Mohamed Kheireddine; Daud, Wan Mohd Ashri Wan

doi:10.1016/j.cej.2012.10.064

Cited by 84 publications

(33 citation statements)

References 38 publications

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“…This slit-like pore structure contributes to higher CO 2 adsorption that is comparable to that of activated carbon prepared from various carbonaceous sources, as shown in Fig. 4 [19][20][21][22][23][24]. In Fig.…”

Section: Co 2 Adsorption Characteristicsmentioning

confidence: 61%

CO₂adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

Park¹,

Lee²,

Kim³

et al. 2015

Carbon letters

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High crystallinity coke-based activated carbon (hc-AC) is prepared using a potassium hydroxide solution to adsorb carbon dioxide (CO 2 ). The CO 2 adsorption characteristics of the prepared hc-AC are investigated at different temperatures. The X-ray diffraction patterns indicate that pitch-based cokes prepared under high temperature and pressure have a high crystal structure. The textural properties of hc-AC indicate that it consists mainly of slit-like pores. Compared to other textural forms of AC that have higher pore volumes, this slit-poreshaped hc-AC exhibits higher CO 2 adsorption due to the similar shape between its pores and CO 2 molecules. Additionally, in these high-crystallinity cokes, the main factor affecting CO 2 adsorption at lower temperature is the pore structure, whereas the presence of oxygen functional groups on the surface has a greater impact on CO 2 adsorption at higher temperature.

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Section: Co 2 Adsorption Characteristicsmentioning

confidence: 61%

CO₂adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

Park¹,

Lee²,

Kim³

et al. 2015

Carbon letters

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“…For example, Arou et al [29] impregnated a microporous carbon with polyethyleneimine (PEI) and observed that a weight loading of PEI greater than 0.26 wt% had a detrimental effect on the CO 2 capacity. In contrast, a study by Lee et al [9] into the use of sterically hindered amines impregnated (~40 wt%) on palm shell derived activated carbon reported a significant (88%) increase in the enhancement in the CO 2 capacity despite a large reduction in the accessible surface area. In this work we provide insight into some of the reasons behind the contrasting results in the literature by directly and systematically comparing two carbons with different pore structures.…”

Section: Introductionmentioning

confidence: 74%

“…One major limitation of solid supports impregnated with low molecular weight amine derivatives is their low stability and performance over repeated adsorption and desorption cycles [9,30]. The relative potential and stability of the adsorbents over several cycles was assessed.…”

Section: Introductionmentioning

confidence: 99%

The effect of pore structure on the CO2 adsorption efficiency of polyamine impregnated porous carbons

Gibson

Gromov

Brandani

et al. 2015

Microporous and Mesoporous Materials

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a b s t r a c tThe effect of polyamine impregnation on the CO 2 adsorption properties of two different porous carbons, one microporous and one mesoporous, was studied systematically. The pore filling during impregnation with polyamines was shown to result in a fraction of the unfilled micropore volume being blocked for gas adsorption. Thermal gravimetric analysis was used to compare the CO 2 capacity at 0.1 bar with respect to the carbon support type, the amount of amine loading, and the type of amine. A 12 fold increase in the CO 2 capacity was observed when the impregnated activated carbon was compared to the raw starting material. A heat of adsorption for amine impregnated support of~90 kJ mol À1 was found, clearly indicating a chemisorption mechanism. The mesoporous material provided a more efficient support for the amine to interact with the CO 2 . The interaction between low molecular weight amines and CO 2 showed a more efficient utilization of the basic groups in comparison to high molecular weight species.

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“…However, the formation of carbamate compounds will deactivate the amine material during CO 2 adsorption. 16 In this study, a secondary amine of DEA did not provide any new chemical bonds after exposure to CO 2 .…”

Section: Effect Of Performance Of Co 2 Adsorption and Porositymentioning

confidence: 87%

Modification of Activated Carbon from Biomass Nypa and Amine Functional Groups as Carbon Dioxide Adsorbent

Ghani

Yusuf

Isahak³

et al. 2017

JPS

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Impregnation of palm shell-based activated carbon with sterically hindered amines for CO2 adsorption

Cited by 84 publications

References 38 publications

CO₂adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

CO₂adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

The effect of pore structure on the CO2 adsorption efficiency of polyamine impregnated porous carbons

Modification of Activated Carbon from Biomass Nypa and Amine Functional Groups as Carbon Dioxide Adsorbent

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Impregnation of palm shell-based activated carbon with sterically hindered amines for CO2 adsorption

Cited by 84 publications

References 38 publications

CO2adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

CO2adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

The effect of pore structure on the CO2 adsorption efficiency of polyamine impregnated porous carbons

Modification of Activated Carbon from Biomass Nypa and Amine Functional Groups as Carbon Dioxide Adsorbent

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CO₂adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

CO₂adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity