Phosphorous dendrimer bound polyethyleneimine as solid sorbents for post-combustion CO2 capture
Autor: | Marty Lail, Mustapha Soukri, Samuel J. Thompson |
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Rok vydání: | 2018 |
Předmět: |
Flue gas
Sorbent Chemistry General Chemical Engineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Adsorption Chemical engineering Acid gas Desorption Dendrimer Environmental Chemistry Sour gas Amine gas treating 0210 nano-technology |
Zdroj: | Chemical Engineering Journal. 350:1056-1065 |
ISSN: | 1385-8947 |
DOI: | 10.1016/j.cej.2018.06.060 |
Popis: | High capacity solid amine sorbents for CO2 adsorption were prepared via a cross-linking reaction between polyaldehyde phosphorous dendrimers and polyethyleneimines (PEIs). The best performing sorbent achieves an average CO2 capacity of 13.1 wt% through 350 cycles of adsorption/desorption over 700 contiguous hours from simulated flue gas conditions (CO2, O2, H2O, and N2). The adsorption operates with relatively high capacities and rapid kinetics between 25 and 85 °C, reaching 90% capacity within the first 10 min of exposure at 65 °C. The capture of CO2 in the presence of common acid gas contaminants (SO2, NO, and NO2) and from sour gas (10,000 ppm H2S) was also demonstrated. The heat of adsorption and other physical properties (e.g. surface area, pore volume, and SEM) were measured and disclosed. |
Databáze: | OpenAIRE |
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