Characterization of oxygen-containing surface complexes created on a microporous carbon by air and nitric acid treatment

Otake, Yoshinobu; Jenkins, Robert G.

doi:10.1016/0008-6223(93)90163-5

Cited by 439 publications

(274 citation statements)

References 5 publications

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“…1000 K. The low temperature emissions detected for the liquid phase oxidised samples may come from desorbed CO 2 , and not from the decomposition of a surface oxide. The CO 2 emission between 400 and 600 K mainly observed for samples MAP-24 and MNA16-3 can be undoubtedly attributed to the decomposition of carboxylic groups [36,54,56,57]. It is important to note that this peak is of significant greater intensity in the liquid phase oxidised samples.…”

Section: Chemical and Textural Propertiesmentioning

confidence: 92%

“…It is important to note that this peak is of significant greater intensity in the liquid phase oxidised samples. The CO 2 evolved at higher temperatures may be related to the decomposition of carboxylic anhydrides and lactones, that decompose in the range 600 to 950 K [36,54,56,57]. There is little information regarding the assignment of higher temperature CO 2 ; to some extent, it might come from secondary reactions of CO.…”

Section: Chemical and Textural Propertiesmentioning

confidence: 99%

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Influence of oxidation upon the CO2 capture performance of a phenolic-resin-derived carbon

Plaza¹,

Thurecht²,

Pevida³

et al. 2013

Fuel Processing Technology

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The effect of oxidation upon the CO 2 capture performance has been studied taking a phenolic resin carbon as the base material. Oxygen surface groups were introduced through liquid and gas phase oxidation treatments, using ammonium persulfate, nitric acid and air, respectively.The surface chemistry of the final carbon is strongly affected by the type of oxidation treatment: liquid phase oxidation introduces a greater amount of oxygen, mostly as carboxylic groups; these are absent in the gas phase oxidised sample that contains mainly ether and carbonyl functionalities. The porous texture of the samples is also affected by the oxidation treatment: through liquid phase oxidation the pore volume is somewhat reduced, while this is slightly developed by air treatment at 693 K. Despite the reduction in the porous volume and the acidic surface, liquid-phase oxidised samples present greater CO 2 adsorption capacity than the starting carbon due to Lewis acid-base interactions with the CO 2 molecule.Moreover: oxidised samples are easily regenerated, and observed heats of adsorption are † Corresponding Author: Tel : +34 985 119090; E-mail address: frubiera@incar.csic.es. (F. Rubiera) 2 typical from physisorption processes, which will facilitate the adsorbent regeneration in cyclic adsorption processes. Oxidation is therefore proposed as a plausible modification technique for developing easy-to-regenerate carbon adsorbents with enhanced CO 2 capture performance.

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Section: Chemical and Textural Propertiesmentioning

confidence: 92%

Section: Chemical and Textural Propertiesmentioning

confidence: 99%

Influence of oxidation upon the CO2 capture performance of a phenolic-resin-derived carbon

Plaza¹,

Thurecht²,

Pevida³

et al. 2013

Fuel Processing Technology

View full text Add to dashboard Cite

show abstract

“…The decomposition of surface oxygen functionalities of a porous carbon upon heating in inert atmosphere is a well-known process that has been extensively used for characterizing the surface functionalities of porous carbon materials [35], [36]. It is known that CO evolution is related to the decomposition of neutral and basic groups such as carbonyl, quinones, phenols, ethers and some others, which can be identified thanks to their different thermal stabilities, which causes them to evolve as CO at different temperatures.…”

Section: Structural and Chemical Characterizationmentioning

confidence: 99%

Successful functionalization of superporous zeolite templated carbon using aminobenzene acids and electrochemical methods

González-Gaitán

Ruiz-Rosas

Nishihara

et al. 2016

Carbon

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A novel and selective electrochemical functionalization of a highly reactive superporous zeolite templated carbon (ZTC) with two different aminobenzene acids (2-aminobenzoic and 4-aminobenzoic acid) was achieved. The functionalization was done through potentiodynamic treatment in acid media under oxidative conditions, which were optimized to preserve the unique ZTC structure. Interestingly, it was possible to avoid the electrochemical oxidation of the highly reactive ZTC structure by controlling the potential limit of the potentiodynamic experiment in presence of aminobenzene acids. The electrochemical characterization demonstrated the formation of polymer chains along with covalently bonded functionalities to the ZTC surface. The functionalized ZTCs showed several redox processes, producing a capacitance increase in both basic and acid media. The rate performance showed that the capacitance increase is retained at scan rates as high as 100 mVs -1 , indicating that there is a fast charge transfer between the polymer chains formed inside the ZTC porosity or the new surface functionalities and the ZTC itself. The success of the proposed approach was also confirmed by using other characterization techniques, which confirmed the presence of different nitrogen groups in the ZTC surface. This promising method could be used to achieve highly selective functionalization of highly porous carbon materials.

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“…It is well known that upon heating in an inert atmosphere, the oxygen surface complexes of carbonaceous materials decompose, releasing CO 2 and CO [32]. CO 2 results from the decomposition of carboxyls, lactones and anhydrides, while CO comes from anhydrides, phenols, carbonyls, quinones and pyrones [20,32,33]. Figure 2 shows the profiles of evolved CO 2 and CO for samples GKOS and GKOSA50, in the course of heating at 15 ºC min -1 in 50 cm 3 min -1 of Ar.…”

Section: Characterisation Of the Activated Samplesmentioning

confidence: 99%

Development of low-cost biomass-based adsorbents for postcombustion CO2 capture

Plaza

Pevida

Arias

et al. 2009

Fuel

193

109

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In this work a series of carbon adsorbents were prepared from a low-cost biomass residue, olive stones. Two different approaches were studied: activation with CO 2 and heat treatment with gaseous ammonia. The results showed that both methods are suitable for the production of adsorbents with a high CO 2 adsorption capacity, and their potential application in VSA or TSA systems for postcombustion CO 2 capture. It was found that the presence of nitrogen functionalities enhances CO 2 adsorption capacity, especially at low partial pressures.

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Characterization of oxygen-containing surface complexes created on a microporous carbon by air and nitric acid treatment

Cited by 439 publications

References 5 publications

Influence of oxidation upon the CO2 capture performance of a phenolic-resin-derived carbon

Influence of oxidation upon the CO2 capture performance of a phenolic-resin-derived carbon

Successful functionalization of superporous zeolite templated carbon using aminobenzene acids and electrochemical methods

Development of low-cost biomass-based adsorbents for postcombustion CO2 capture

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