Highly selective CO2 capture on N-doped carbon produced by chemical activation of polypyrrole functionalized graphene sheets

Please cite this article as: Marco-Lozar, J.P., Kunowsky, M., Suárez-García, F., Linares-Solano, A., Sorbent design for CO 2 capture under different flue gas conditions, Carbon (2014), doi: http://dx.doi.org/10.1016/j.carbon. 2014.01.064This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Sorbent design for CO AbstractCO 2 capture by solid sorbents is a physisorption process in which the gas molecules are adsorbed in a different porosity range, depending on the temperature and pressure of the capture conditions. Accordingly, CO 2 capture capacities can be enhanced if the sorbent has a proper porosity development and a suitable pore size distribution. Thus, the main objective of this work is to maximize the CO 2 capture capacity at ambient temperature, elucidating which is the most suitable porosity that the adsorbent has to have as a function of the emission source conditions. In order to do so, different activated carbons have been selected and their CO 2 capture capacities have been measured. The obtained results show that for low CO 2 pressures (e.g., conditions similar to post-combustion processes) the sorbent should have the maximum possible volume of micropores smaller than 0.7 nm. However, the sorbent requires the maximum possible total micropore volume when the capture is performed at high pressures (e.g., conditions similar to oxy-combustion or pre-combustion processes). Finally, this study also analyzes the important influence that the sorbent density has on the CO 2 capture capacity, since the adsorbent will be confined in a bed with a restricted volume.

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“…This is confirmed by the increasing number of papers published in recent years [4][5][6][9][10][11][12][13][14][15][16][17].…”

Section: Introductionsupporting

confidence: 55%

Sorbent design for CO2 capture under different flue gas conditions

Marco-Lozar

Kunowsky

Suárez-Garcı́a

et al. 2014

Carbon

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“…Nitrogen-containing porous carbon (NPC) materials have previously been reported to be active for CO 2 capture. In general, their uptake was in the range of 0.14-0.19 g CO 2 /g sorbent @ 1 bar [2][3][4][5]. Analysis of the reported data by Hwang et al, shows an uptake of between 0.11-0.19 g CO 2 /g sorbent @ 1 bar [1], i.e., within the range exhibited for prior materials.…”

Section: Introductionmentioning

confidence: 76%

Is the Formation of Poly-CO2 Stabilized by Lewis Base Moieties in N- and S-Doped Porous Carbon?

Ghosh

Barron

2016

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Abstract:The polymerization of CO 2 by Lewis basic moieties has been recently proposed to account for the high adsorption ability of N and S-doped porous carbon materials formed from the pyrolysis of sulfur or nitrogen containing polymers in the presence of KOH. Ab initio calculations performed on the ideal CO 2 tetramer complex LB-(CO 2 ) 4 (LB = NH 3 , H 2 O, H 2 S) showed no propensity for stabilization. A weak association is observed using Lewis acid species bound to oxygen (LA = H + , AlF 3 , AlH 3 , B 4 O 6 ); however, the combination of a Lewis acid and base does allow for the formation of polymerized CO 2 (i.e., LB-While the presence of acid moieties in porous carbon is well known, and borate species are experimentally observed in KOH activated porous carbon materials, the low stability of the oligomers calculated herein, is insufficient to explain the reported poly-CO 2 .

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“…(2) Emerging materials. In order to increase technological efficiency, some new materials, including graphene [79][80][81][82]99] and nanoporous organic polymers [84], are employed in the innovative activities of CCS technology. (3) Evaluation of technological performance.…”

Section: Discussionmentioning

confidence: 99%

“…Liu et al [78] presented a versatile fabrication strategy to conquer the defects of hierarchically porous carbon materials in industrial application. Chandra et al [79] reported two commonly used technologies and their technological limitations, and then, they considered that, as a promising and emerging technology, graphene can have several obvious advantages in the area of carbon absorption technology. Therefore, they examine how to synthesize one kind of porous carbon using graphene.…”

Section: Main Contents Of Important Emerging Trendsmentioning

confidence: 99%

A Study on the Evolution of Carbon Capture and Storage Technology Based on Knowledge Mapping

Hong-hua

Liu

2018

Energies

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As a useful technical measure to deal with the problem of carbon dioxide (CO 2 ) emissions, carbon capture and storage (CCS) technology has been highly regarded in both theory and practice under the promotion of the Intergovernmental Panel on Climate Change (IPCC). Knowledge mapping is helpful for understanding the evolution in terms of research topics and emerging trends in a specific domain. In this work knowledge mapping of CCS technology was investigated using CiteSpace. Several aspects of the outputs of publications in the CCS research area were analyzed, such as annual trends, countries, and institutions. The research topics in this particular technology area were analyzed based on their co-occurring keyword networks and co-citation literature networks, while, the emerging trends and research frontiers were studied through the analysis of burst keywords and citation bursts. The results indicated that the annual number of publications in the research field of CCS technology increased rapidly after 2005. There are more CCS studies published in countries from Asia, North America, and Europe, especially in the United States and China. The Chinese Academy of Sciences not only has the largest number of publications, but also has a greater impact on the research area of CCS technology, however, there are more productive institutions located in developed countries. In the research area of CCS technology, the main research topics include carbon emissions and environmental protection, research and development activities, and social practical issues, meanwhile, the main emerging trends include emerging techniques and processes, emerging materials, evaluation of technological performance, and socioeconomic analysis.

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Highly selective CO2 capture on N-doped carbon produced by chemical activation of polypyrrole functionalized graphene sheets

Cited by 321 publications

References 47 publications

Sorbent design for CO2 capture under different flue gas conditions

Sorbent design for CO2 capture under different flue gas conditions

Is the Formation of Poly-CO2 Stabilized by Lewis Base Moieties in N- and S-Doped Porous Carbon?

A Study on the Evolution of Carbon Capture and Storage Technology Based on Knowledge Mapping

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