title: Capture of carbon dioxide by amine-impregnated as-synthesized MCM-41.
abstract: The novel carbon dioxide (CO2) adsorbents with a high capture efficiency were prepared through impregnating the as-synthesized MCM-41 with three kinds of amines, namely diethylenetriamine (DETA), triethylenetetramine (TETA) and 2-amino-2-methyl-1-propanol (AMP). The resultant samples were characterized by small angle X-ray diffraction and low temperature N2 adsorption. The synthesis way not only saves the energy or extractor to remove the template but also is environmentally friendly due to the absence of the potential pollutants such as toluene. CO2 capture was investigated in a dynamic packed column. The sample impregnated by TETA showed the highest adsorption capacity, approximately 2.22 mmol/g at 60 degrees C due to its highest amino-groups content among the three amines. The CO2 adsorption behavior was also investigated with the deactivation model, which showed an excellent prediction for the breakthrough curves.
authors.affiliation: College of Environmental Science and Technology, Guangxi Key Laboratory of Environmental Engineering and Protecting Assessment, Guilin University of Technology, Guilin 541004, China. jianwen988@126.com
authors.forename: Jianwen
authors.initials: J
authors.lastname: Wei
authors.forename: Lei
authors.initials: L
authors.lastname: Liao
authors.forename: Yu
authors.initials: Y
authors.lastname: Xiao
authors.forename: Pei
authors.initials: P
authors.lastname: Zhang
authors.forename: Yao
authors.initials: Y
authors.lastname: Shi
mesh_terms: D000327:Adsorption; D000588:Amines / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D011073:Polyamines / Q000737:chemistry; D011412:Propanolamines / Q000737:chemistry; D053838:Scattering, Small Angle; D012822:Silicon Dioxide / Q000737:chemistry*; D014265:Triethylenemelamine / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D000588:Amines; C509968:MCM-41; D011073:Polyamines; D011412:Propanolamines; C005391:diethylenetriamine; D002245:Carbon Dioxide; D012822:Silicon Dioxide; D014265:Triethylenemelamine; C006551:2-amino-2-methyl-1-propanol