Abstract
Various MEA solutions were prepared by adding M(CH3COO)2 (M=Ni, Co, Cu, Zn) to mono-ethanolamine (hereafter M-MEA solution) to improve the CO2 desorption property of MEA. From the FTIR spectra and UV–vis-NIR, it was found that the Co-MEA complex, [Co(MEA)3]3+, was formed in the Co-MEA solution. The Co-MEA solution including [Co(MEA)3]3+ showed an excellent CO2 desorption property at 60°C, compared to Ni-MEA, Zn-MEA, Cu-MEA, and non-added MEA. Then, the Co-MEA/SiO2 composite was fabricated by impregnating Co-MEA to a mesoporous silica. The CO2 desorption property at 60°C of the Co-MEA/SiO2 composite was also improved, similar with the Co-MEA solution. The CO2 absorption capacity at RT of the Co- MEA/SiO2 composite was lowered compared to than that of the non-added MEA/SiO2 composite. However, the CO2 absorption capacity of the Co-MEA/SiO2 composite was almost maintained even at the 10th repetition of CO2 absorption and desorption. Thus, it was found the Co-MEA/SiO2 composite was stable for CO2 absorption and desorption and was an appropriate material for improving the CO2 desorption behavior of MEA.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.