DOI: 10.1016/j.jcou.2018.04.020
Scopus记录号: 2-s2.0-85046123856
论文题名: Synthesis of carbon monoliths with a tailored hierarchical pore structure for selective CO2 capture
作者: Zabiegaj D. ; Caccia M. ; Casco M.E. ; Ravera F. ; Narciso J.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 36
结束页码: 44
语种: 英语
英文关键词: Breakthrough experiment
; Carbon monoliths
; CO2 sequestration
Scopus关键词: Activated carbon
; Carbon dioxide
; Carbonization
; Cationic surfactants
; Compressive strength
; Dyes
; Gas adsorption
; Microporosity
; Pore structure
; Scanning electron microscopy
; Activated carbon particles
; Adsorption capacities
; Adsorption/desorption
; Breakthrough experiment
; Carbon monoliths
; CO2 sequestration
; Hierarchical pore structures
; Micro-porous structure
; Foams
英文摘要: Carbon monolithic adsorbents exhibiting a hierarchical pore structure are produced via a synthesis route based on the stabilization of liquid foams followed by a carbonization step. The macro-microporous structure is achieved by the incorporation of microporous, biomass-derived activated carbon particles in the liquid foam enclosed by a cationic surfactant as stabilizer. This method yields crack-free monoliths (solid foams) with a compressive strength of the order of 20 kPa. The microstructure and the textural properties of the final solid foams have been investigated by means of Scanning Electron Microscopy (SEM) and gas adsorption. The behavior as selective CO2 adsorbents at 25 °C has been evaluated using breakthrough experiments under simulated post-combustion conditions (16% V/V CO2/N2), resulting in a selectivity factor of 13 over N2. The hierarchical pore structure of the monoliths allows a rapid transport of the gas mixture through the macropores with no appreciable pressure drop, retaining more than 90 % of the adsorption capacity (∼ 0.868 mmol/g) after several adsorption/desorption cycles. Moreover, the monolith has shown a CO2 uptake capacity of 2.62 mmol/g under static condition at 1 bar and 25 °C. This study provides guidelines for the design of carbon-based foams decorated with carbon particles, which have morphological and textural properties that can be carefully selected for any gas-selective capture application. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111844
Appears in Collections: 气候减缓与适应
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作者单位: CNR - Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), via De Marini 6, Genoa, 16149, Italy; Instituto Universitario de Materiales de Alicante (IUMA), Universidad de Alicante, Apdo. 99, Alicante, 03080, Spain
Recommended Citation:
Zabiegaj D.,Caccia M.,Casco M.E.,et al. Synthesis of carbon monoliths with a tailored hierarchical pore structure for selective CO2 capture[J]. Journal of CO2 Utilization,2018-01-01,26