Journal
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
Volume 37, Issue -, Pages 90-98Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijggc.2015.03.018
Keywords
CO2 capture; Mixed amines; Adsorption capacity; Regenerability; Adsorption kinetics
Categories
Funding
- Natural Science Foundation of China [21276129]
- Special Fund of Marine Renewable Energy of China [GHME2001SW02]
- Qingdao Application Foundation [14-2-4-5-jch]
Ask authors/readers for more resources
A CO2 sorbent was prepared by immobilizing a mixture of tetraethylenepentamine (TEPA) and 2-amino-2-methyl-L-propanol (AMP) onto MCM-41. The prepared composites were characterized by N-2 adsorption-desorption, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) techniques. CO2 adsorption-desorption experiments were conducted in a self-assembled fixed bed reactor under the simulated flue gas component of 15 vol.% CO2/85 vol.% N-2. The promoting effects of AMP on the adsorption performance and amine efficiency of TEPA modified MCM-41 were studied. In addition, the effects of the adsorption temperature and the feed flow rate on the CO2 adsorption process were investigated. Further, the regenerability of the sorbent was studied by performing fifteen adsorption-desorption cycles over the temperature range of 70 degrees C (adsorption) to 100 degrees C (desorption). Among the prepared sorbents, MCM-41 modified with 30 wt.% TEPA and 30 wt.% AMP (MCM-41-TEPA30%-AMP30%) showed rapid adsorption kinetics and the maximum CO2 adsorption capacity of 3.01 mmol-CO2/g-sorbent at 70 degrees C. Moreover, the MCM-41-TEPA30%-AMP30% sorbent exhibited good regenerability and thermal stability. The results demonstrate that the MCM-41-TEPA30%-AMP30% sorbent is a promising CO2 sorbent. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available