TY - JOUR
T1 - Amine-functionalized low-cost industrial grade multi-walled carbon nanotubes for the capture of carbon dioxide
AU - Liu, Qing
AU - Shi, Yao
AU - Zheng, Shudong
AU - Ning, Liqi
AU - Ye, Qing
AU - Tao, Mengna
AU - He, Yi
PY - 2014/1
Y1 - 2014/1
N2 - Industrial grade multi-walled carbon nanotubes (IG-MWCNTs) are a low-cost substitute for commercially purified multi-walled carbon nanotubes (P-MWCNTs). In this work, IG-MWCNTs were functionalized with tetraethylenepentamine (TEPA) for CO2 capture. The TEPA impregnated IG-MWCNTs were characterized with various experimental methods including N2 adsorption/desorption isotherms, elemental analysis, X-ray diffraction, Fourier transform infrared spectroscopy and thermogravimetric analysis. Both the adsorption isotherms of IG-MWCNTs-n and the isosteric heats of different adsorption capacities were obtained from experiments. TEPA impregnated IG-MWCNTs were also shown to have high CO2 adsorption capacity comparable to that of TEPA impregnated P-MWCNTs. The adsorption capacity of IG-MWCNTs based adsorbents was in the range of 2.145 to 3.088 mmol/g, depending on adsorption temperatures. Having the advantages of low-cost and high adsorption capacity, TEPA impregnated IG-MWCNTs seem to be a promising adsorbent for CO2 capture from flue gas.
AB - Industrial grade multi-walled carbon nanotubes (IG-MWCNTs) are a low-cost substitute for commercially purified multi-walled carbon nanotubes (P-MWCNTs). In this work, IG-MWCNTs were functionalized with tetraethylenepentamine (TEPA) for CO2 capture. The TEPA impregnated IG-MWCNTs were characterized with various experimental methods including N2 adsorption/desorption isotherms, elemental analysis, X-ray diffraction, Fourier transform infrared spectroscopy and thermogravimetric analysis. Both the adsorption isotherms of IG-MWCNTs-n and the isosteric heats of different adsorption capacities were obtained from experiments. TEPA impregnated IG-MWCNTs were also shown to have high CO2 adsorption capacity comparable to that of TEPA impregnated P-MWCNTs. The adsorption capacity of IG-MWCNTs based adsorbents was in the range of 2.145 to 3.088 mmol/g, depending on adsorption temperatures. Having the advantages of low-cost and high adsorption capacity, TEPA impregnated IG-MWCNTs seem to be a promising adsorbent for CO2 capture from flue gas.
KW - CO adsorption multi-walled carbon nanotubes (MWCNTs) tetraethylenepentamine (TEPA) heat of adsorption amine modification
UR - http://www.scopus.com/inward/record.url?scp=84893315699&partnerID=8YFLogxK
U2 - 10.1016/S2095-4956(14)60124-8
DO - 10.1016/S2095-4956(14)60124-8
M3 - 文章
AN - SCOPUS:84893315699
SN - 2095-4956
VL - 23
SP - 111
EP - 118
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
IS - 1
ER -