Enhancement of CO2 adsorption on phenolic resin-based mesoporous carbons by KOH activation

Souza, Luiz K.C. de; Wickramaratne, Nilantha P.; Ello, Aimé Serge; Costa, Maria J. F.; Costa, Carlos Emmerson Ferreira da; Jaroniec, Mietek

doi:10.1016/j.carbon.2013.08.034

Cited by 133 publications

(79 citation statements)

References 31 publications

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“…Theselectivity for CO 2 /N 2 separation (calculated from ratio of initial slopes) over JNC-1 at 25 8 8Cwas found to be about 7compared to 6o fC MK-3 and can be attributed to the presence of abundant micropores (Supporting Information, Figure S29) in the former. [6,32,33] Hydrogen uptake (2.8 wt %) of JNC-1 at Figure 3a)was also found to be higher than that of CMK-3 (1.2 wt %; Figure 3a;Supporting Information, Table S7) and is completely reversible throughout the pressure range studied. Thep resence of huge amount of micropores (40 %) having as ize of about 0.9 nm is within the accepted range of optimum micropore diameter for hydrogen storage (that is,b etween 0.5-1.5 nm) and contributes as sites of high energy of adsorption, thereby maximizing the uptake.…”

Section: Methodsmentioning

confidence: 68%

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO₂ Capture and Supercapacitor Performance

et al. 2016

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An innovative technique to obtain high-surface-area mesostructured carbon (2545 m 2 g À1 )w ith significant microporosity uses Teflon as the silica template removal agent. This method not only shortens synthesis time by combining silica removal and carbonization in as ingle step,b ut also assists in ultrafast removal of the template (in 10 min) with complete elimination of toxic HF usage.T he obtained carbon material (JNC-1) displays excellent CO 2 capture ability (ca. 26.2 wt %at 0 8 8Cunder 0.88 bar CO 2 pressure), which is twice that of CMK3o btained by the HF etching method (13.0 wt %). JNC1d emonstrated higher H 2 adsorption capacity (2.8 wt %) compared to CMK-3 (1.2 wt %) at À196 8 8Cu nder 1.0 bar H 2 pressure.T he bimodal pore architecture of JNC-1 led to superior supercapacitor performance,w ith as pecific capacitance of 292 Fg À1 and 182 Fg À1 at ad rain rate of 1Ag À1 and 50 Ag À1 ,r espectively,i n1 m H 2 SO 4 compared to CMK-3 and activated carbon.

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Section: Methodsmentioning

confidence: 68%

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO₂ Capture and Supercapacitor Performance

et al. 2016

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“…Wcześniejsze badania Jarońca i innych [17][18][19] pokazały, że proces aktywacji węgli otrzymanych z żywicy fenolowej przy użyciu CO 2 , pary wodnej, KOH oraz K 2 CO 3 i K 2 C 2 O 4 prowadzi do znacznego rozwinięcia mikroporowatości.…”

Section: Wstępunclassified

Preparation and Studies of Adsorption Properties of Microporous Carbon Spheres

Choma¹,

Kloske²,

Dziura³

et al. 2016

Eng. Prot. Environ.

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The modified Stöber method involving a one-step simultaneous calcination and activation was used to obtain highly microporous carbon spheres. Resorcinol and formaldehyde were used as carbon precursors, potassium oxalate was employed as an activating agent and carbon source, and ammonia was used as a polymerization catalyst. The resulting spherical phenolic resins containing potassium salt were subjected to simultaneous carbonization and activation at 600°C for 4 hours in flowing nitrogen. However, non-activated carbon spheres (without potassium oxalate) were carbonized at 600°C for 2 hours in flowing nitrogen. The simultaneous carbonization and activation of polymeric spheres afforded carbon spheres with much higher microporosity than that in the spheres obtained without potassium salt. In the case of activated spheres each the specific surface area, the total pore volume and the micropore volume increased about twice. The obtained carbon spheres featured the specific surface area of 1490 m 2 g -1 , total pore volume of 0.74 cm 3 g -1 , the ultramicropore volume of 0.38 cm 3 g -1 and the micropore volume of 0.61 cm 3 g -1 . A well-developed microporosity, in particular ultramicroporosity (pores of sizes below 1.0 nm), has an essential influence of adsorption of CO2. The activated spheres adsorbed 7.67 mmol g -1 at 0°C and 1 atm. These spheres featured also high working capacity with respect to CO2 equal 4.23 mmol g -1 estimated as the difference between the gas uptake at 30°C and 1 atm and the gas uptake at 60°C and 0.0013 atm. The pore size distributions calculated from nitrogen adsorption isotherms at -196°C and from CO2 adsorption isotherms at 0°C by using the density functional theory for heterogeneous surfaces, 2D-NLDFT, are also shown. These distributions confirmed a significant development of microporosity in the activated carbon spheres. Also, the isosteric heat of CO2 adsorption was calculated by using CO2 adsorption isotherms measured in the temperature range from 0 to 60°C. The isosteric heat of adsorption on activated carbon spheres varies from 40 kJ mol -1 to about 25 kJ mol -1 . This study shows that a simultaneous carbonization and activation of phenolic resin spheres affords carbon spheres with high microporosity suitable for CO2 capture at ambient conditions.

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“…The most used polymer precursors were phenolic resins due to their relatively low costs Martin et al, 2011;de Souza et al, 2013;Garcia et al, 2013;Sun et al, 2013;Wickramaratne and Jaroniec, 2013). By varying the formaldehydeto-phenol ratio and catalysts during synthesis, resol and novolac phenolic resins were prepared by Pevida et al, after carbonization of the resulted resins and subsequent activation in a CO 2 atmosphere, microporous carbons were obtained with CO 2 adsorption capacities of around 10.8 wt.…”

Section: Carbons From Polymersmentioning

confidence: 99%

“…13.0 wt. % at 25°C and 1 bar; An et al, 2009;de Souza et al, 2013;Wickramaratne and Jaroniec, 2013). In addition to phenolic resins, Qiu and co-workers carbonized porous aromatic frameworks PAF-1 (Ben et al, 2009), and an allcarbon-scaffold microporous carbon was thus prepared, which adsorbs 19.8 wt.…”

Section: Carbons From Polymersmentioning

confidence: 99%

Solid Adsorbents for Low-Temperature CO2 Capture with Low-Energy Penalties Leading to More Effective Integrated Solutions for Power Generation and Industrial Processes

et al. 2015

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CO 2 capture represents the key technology for CO 2 reduction within the framework of CO 2 capture, utilization, and storage (CCUS). In fact, the implementation of CO 2 capture extends far beyond CCUS since it will link the CO 2 emission and recycling sectors, and when renewables are used to provide necessary energy input, CO 2 capture would enable a profitable zero-or even negative-emitting and integrated energy-chemical solution. To this end, highly efficient CO 2 capture technologies are needed, and adsorption using solid adsorbents has the potential to be one of the ideal options. Currently, the greatest challenge in this area is the development of adsorbents with high performance that balances a range of optimization-needed factors, those including costs, efficiency, and engineering feasibility. In this review, recent advances on the development of carbon-based and immobilized organic amines-based CO 2 adsorbents are summarized, the selection of these particular categories of materials is because they are among the most developed low-temperature (<100°C) CO 2 adsorbents up to date, which showed important potential for practical deployment at pilot-scale in the near future. Preparation protocols, adsorption behaviors as well as pros and cons of each type of the adsorbents are presented, it was concluded that encouraging results have been achieved already, however, the development of more effective adsorbents for CO 2 capture remains challenging and further innovations in the design and synthesis of adsorbents are needed.Keywords: CCUS, CO 2 capture, adsorption, energy, material science INTRODUCTION CO 2 CAPTURE AND AN INTEGRATED ENERGY-CHEMICAL SOLUTIONThe atmospheric CO 2 concentration now exceeds 400 ppm (CO2Now.org, 2014), and its continuous increase is believed to be the major factor leading to global warming and climatic change (Crowley, 2000;Held and Soden, 2000;Patz et al., 2005). Kaya et al. and Hoffert et al. have quantified net CO 2 emissions in terms of population, economic activity, and energy-related factors using Eq. 1 (Kaya, 1995;Hoffert et al., 1998).where C is the net CO 2 emission, P is population, GDP is the gross domestic product that is used here as an indicator of economyrelated factor, and E is energy production. Therefore, GDP/P is the Per capita GDP, and E/GDP can be regarded as the energy intensity during production that is closely related to the efficiency of energy utilization. The last term, C/E, represents the carbon intensity during energy production. As for the development of the human society and life quality, it is improper to limit population and production, which means there is no solution to CO 2 reduction from the first and second term in Eq. 1. On the other hand, increase in the energy production/utilization efficiency and control of the carbon footprint during energy processes are the major strategies for CO 2 sequestration (third and fourth term in Eq. 1). The complete decarbonization of energy is believed to be the ultimate solution for the long-term sustainability, ...

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Enhancement of CO2 adsorption on phenolic resin-based mesoporous carbons by KOH activation

Cited by 133 publications

References 31 publications

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO₂ Capture and Supercapacitor Performance

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO₂ Capture and Supercapacitor Performance

Preparation and Studies of Adsorption Properties of Microporous Carbon Spheres

Solid Adsorbents for Low-Temperature CO2 Capture with Low-Energy Penalties Leading to More Effective Integrated Solutions for Power Generation and Industrial Processes

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Enhancement of CO2 adsorption on phenolic resin-based mesoporous carbons by KOH activation

Cited by 133 publications

References 31 publications

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO2 Capture and Supercapacitor Performance

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO2 Capture and Supercapacitor Performance

Preparation and Studies of Adsorption Properties of Microporous Carbon Spheres

Solid Adsorbents for Low-Temperature CO2 Capture with Low-Energy Penalties Leading to More Effective Integrated Solutions for Power Generation and Industrial Processes

Contact Info

Product

Resources

About

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO₂ Capture and Supercapacitor Performance

No More HF: Teflon‐Assisted Ultrafast Removal of Silica to Generate High‐Surface‐Area Mesostructured Carbon for Enhanced CO₂ Capture and Supercapacitor Performance