Phosphorous dendrimer bound polyethyleneimine as solid sorbents for post-combustion CO2 capture

[Display omitted] •Covalently tethered amines afford a robust, water-stable CO2 sorbent.•Sorbent capacities for CO2 as high as 13.6 wt% under simulated flue gas conditions.•No degradation observed over 350 cycles or 700 contiguous running hours. High capacity solid amine sorbents for CO2 adsorption...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 350; no. C; pp. 1056 - 1065
Main Authors: Thompson, Samuel J., Soukri, Mustapha, Lail, Marty
Format: Journal Article
Language:English
Published: Switzerland Elsevier B.V 15.10.2018
Elsevier
Subjects:
Carbon capture
CO2 solid sorbent
Phosphorous dendrimer
Post combustion Co2 capture
Solid sorbent
Solid sorbent
Post combustion Co2 capture
Carbon capture
CO2 solid sorbent
Phosphorous dendrimer
ISSN:1385-8947, 1873-3212
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Covalently tethered amines afford a robust, water-stable CO2 sorbent.•Sorbent capacities for CO2 as high as 13.6 wt% under simulated flue gas conditions.•No degradation observed over 350 cycles or 700 contiguous running hours. 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.
Bibliography:USDOE
FE0026432
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2018.06.060