A combination of coal fly ash (FA) and a polymer binder, namely, poly(vinyl chloride) (PVC), was used to pelletize immobilized amine CO 2 sorbents. The pelletization of mixtures of FA and 50 wt % tetraethylenepentamine (TEPA) or ethylenimine oligomer mixture ( M w =423)/silica (EI 423 ‐S) with PVC created a rigid PVC/FA/sorbent network. The strength of the network was attributed, in part, to the hydrogen bonding of PVC with the hydroxy and amine groups of the FA and sorbent (infrared spectroscopy). Increasing the PVC molecular weight or FA content enhanced the pellet strength and reduced CO 2 capture. The optimum pellet, FA/EI 423 ‐S (20/80)_PVC 62 [10 wt % PVC 62 ( M w =62 000), 17 wt % FA], captured 1.33 mmol g −1 and exhibited a crush strength of 1.42 MPa. The reaction between PVC and amines produced ammonium ions (−NH 3+ /−NH 2+ ), which reduced the CO 2 captured by the pellet during stability testing. This issue was partially resolved by replacing PVC 62 with p ‐phenylenediamine‐modified PVC 62 , which also enhanced the pellet CO 2 capture to 1.5 mmol g −1 .
Wilfong, Walter Christopher, et al. "Pelletization of Immobilized Amine Carbon Dioxide Sorbents with Fly Ash and Poly(vinyl chloride)." Energy Technology, vol. 4, no. 5, Jan. 2016. https://doi.org/10.1002/ente.201500419
Wilfong, Walter Christopher, Gray, McMahan L., Kail, Brian W., & Howard, Bret H. (2016). Pelletization of Immobilized Amine Carbon Dioxide Sorbents with Fly Ash and Poly(vinyl chloride). Energy Technology, 4(5). https://doi.org/10.1002/ente.201500419
Wilfong, Walter Christopher, Gray, McMahan L., Kail, Brian W., et al., "Pelletization of Immobilized Amine Carbon Dioxide Sorbents with Fly Ash and Poly(vinyl chloride)," Energy Technology 4, no. 5 (2016), https://doi.org/10.1002/ente.201500419
@article{osti_1401852,
author = {Wilfong, Walter Christopher and Gray, McMahan L. and Kail, Brian W. and Howard, Bret H.},
title = {Pelletization of Immobilized Amine Carbon Dioxide Sorbents with Fly Ash and Poly(vinyl chloride)},
annote = {Abstract A combination of coal fly ash (FA) and a polymer binder, namely, poly(vinyl chloride) (PVC), was used to pelletize immobilized amine CO 2 sorbents. The pelletization of mixtures of FA and 50 wt % tetraethylenepentamine (TEPA) or ethylenimine oligomer mixture ( M w =423)/silica (EI 423 ‐S) with PVC created a rigid PVC/FA/sorbent network. The strength of the network was attributed, in part, to the hydrogen bonding of PVC with the hydroxy and amine groups of the FA and sorbent (infrared spectroscopy). Increasing the PVC molecular weight or FA content enhanced the pellet strength and reduced CO 2 capture. The optimum pellet, FA/EI 423 ‐S (20/80)_PVC 62 [10 wt % PVC 62 ( M w =62 000), 17 wt % FA], captured 1.33 mmol g −1 and exhibited a crush strength of 1.42 MPa. The reaction between PVC and amines produced ammonium ions (−NH 3 + /−NH 2 + ), which reduced the CO 2 captured by the pellet during stability testing. This issue was partially resolved by replacing PVC 62 with p ‐phenylenediamine‐modified PVC 62 , which also enhanced the pellet CO 2 capture to 1.5 mmol g −1 . },
doi = {10.1002/ente.201500419},
url = {https://www.osti.gov/biblio/1401852},
journal = {Energy Technology},
issn = {ISSN 2194-4288},
number = {5},
volume = {4},
place = {Germany},
publisher = {Wiley Blackwell (John Wiley & Sons)},
year = {2016},
month = {01}}
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, Vol. 227, Issue 2https://doi.org/10.1177/0954408912469491