TY - JOUR
T1 - Stability of a Benzyl Amine Based CO2 Capture Adsorbent in View of Regeneration Strategies
AU - Yu, Qian
AU - Delgado, Jorge De La P.
AU - Veneman, Rens
AU - Brilman, Derk W.F.
PY - 2017/3/29
Y1 - 2017/3/29
N2 - In this work, the chemical and thermal stability of a primary amine-functionalized ion-exchange resin (Lewatit VP OC 1065) is studied in view of the potential options of regenerating this sorbent in a CO2 removal application. The adsorbent was treated continuously in the presence of air, different O2/CO2/N2 mixtures, concentrated CO2, and steam, and then the remaining CO2 adsorption capacity was measured. Elemental analysis, BET/BJH analysis, Fourier transform infrared spectroscopy, and thermogravimetric analysis were applied to characterize adsorbent properties. This material was found to be thermally and hydrothermally stable at high temperatures. However, significant oxidative degradation occurred already at moderate temperatures (above 70 °C). Temperatures above 120°C lead to degradation in concentrated dry CO2. Adding moisture to the concentrated CO2 stream improves the CO2-induced stability. Adsorbent regeneration with nitrogen stripping is studied with various parameters, focusing on minimizing the moles of purge gas required per mole of CO2 desorbed.
AB - In this work, the chemical and thermal stability of a primary amine-functionalized ion-exchange resin (Lewatit VP OC 1065) is studied in view of the potential options of regenerating this sorbent in a CO2 removal application. The adsorbent was treated continuously in the presence of air, different O2/CO2/N2 mixtures, concentrated CO2, and steam, and then the remaining CO2 adsorption capacity was measured. Elemental analysis, BET/BJH analysis, Fourier transform infrared spectroscopy, and thermogravimetric analysis were applied to characterize adsorbent properties. This material was found to be thermally and hydrothermally stable at high temperatures. However, significant oxidative degradation occurred already at moderate temperatures (above 70 °C). Temperatures above 120°C lead to degradation in concentrated dry CO2. Adding moisture to the concentrated CO2 stream improves the CO2-induced stability. Adsorbent regeneration with nitrogen stripping is studied with various parameters, focusing on minimizing the moles of purge gas required per mole of CO2 desorbed.
UR - http://www.scopus.com/inward/record.url?scp=85019941401&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.6b04645
DO - 10.1021/acs.iecr.6b04645
M3 - Article
AN - SCOPUS:85019941401
SN - 0888-5885
VL - 56
SP - 3259
EP - 3269
JO - Industrial & engineering chemistry research
JF - Industrial & engineering chemistry research
IS - 12
ER -
