Capture of carbon dioxide by amine-loaded as-synthesized TiO2 nanotubes

Titanium-based adsorbents for CO2 capture were prepared through impregnating the as-synthesized TiO2 nanotubes (TiNT) with four kinds of amines, namely monoethanolamine (MEA), ethylenediamine (EDA), triethylenetetramine (TETA) and tetraethylenepentamine (TEPA). The resultant samples were characterized by X-ray diffraction, low-temperature N2 adsorption as well as transmission electron microscopy. The absorption of CO2 was carried out in a dynamic packed column. The sample impregnated with TEPA showed a better adsorption capacity due to its higher amino groups content. In addition, CO2 adsorption capacity increases as the amount of amine loaded increases. Therefore, TiNT-TEPA-69 showed the highest CO2 adsorption capacity among the three samples impregnated with TETA; approximately 4.10 mmol/g at 30°C. In addition, the dynamic adsorption/desorption performance was investigated. The adsorption capacity of TiNT-TEPA-69 dropped slightly (about 2%) during a total of five cycles. The TiNT-TEPA-69 adsorbent exhibited excellent CO2 adsorption/desorption performance.

[1]  Chunshan Song.  Global challenges and strategies for control, conversion and utilization of CO2 for sustainable development involving energy, catalysis, adsorption and chemical processing , 2006 .

[2]  Sangil Kim,et al.  Tailoring pore properties of MCM-48 silica for selective adsorption of CO2. , 2005, The journal of physical chemistry. B.

[3]  Timothy E. Fout,et al.  Advances in CO2 capture technology—The U.S. Department of Energy's Carbon Sequestration Program ☆ , 2008 .

[4]  Baolin Zhu,et al.  Synthesis, characterization of Cr-doped TiO2 nanotubes with high photocatalytic activity , 2008 .

[5]  Y. Liu,et al.  Synthesis and characterization of anatase TiO2 nanotubes with uniform diameter from titanium powder , 2008 .

[6]  Shigeo Uchida,et al.  Evaluation of dual-bed pressure swing adsorption for CO2 recovery from boiler exhaust gas , 2001 .

[7]  Soo Chool Lee,et al.  Structure Effects of Potassium-Based TiO2 Sorbents on the CO2 Capture Capacity , 2010 .

[8]  Yao Shi,et al.  Dynamic performance of CO2 adsorption with tetraethylenepentamine-loaded KIT-6 , 2010 .

[9]  K. S. Knaebel,et al.  Pressure swing adsorption , 1993 .

[10]  C. L. Tseng,et al.  2-Ethanolamine on TiO2 Investigated by in Situ Infrared Spectroscopy. Adsorption, Photochemistry, and Its Interaction with CO2 , 2010 .

[11]  P. Wakeley,et al.  Synthesis , 2013, The Role of Animals in Emerging Viral Diseases.

[12]  C. Ronconi,et al.  Amine-modified MCM-41 mesoporous silica for carbon dioxide capture , 2011 .

[13]  Lee Ji Yun,et al.  Utilization of rice husk ash as silica source for the synthesis of mesoporous silicas and their application to CO2 adsorption through TREN/TEPA grafting. , 2010, Journal of hazardous materials.

[14]  Yao Shi,et al.  Adsorption of Low-Concentration Carbon Dioxide on Amine-Modified Carbon Nanotubes at Ambient Temperature , 2012 .

[15]  M. Katoh,et al.  Adsorption Characteristics of Ion-Exchanged ZSM-5 Zeolites for CO(2)/N(2) Mixtures. , 2000, Journal of colloid and interface science.

[16]  Zou Yong,et al.  Adsorption of Carbon Dioxide on Chemically Modified High Surface Area Carbon-Based Adsorbents at High Temperature , 2001 .

[17]  S. Lo,et al.  Review of titania nanotubes synthesized via the hydrothermal treatment: Fabrication, modification, and application , 2007 .

[18]  A. Barron,et al.  Synthesis, characterization, and carbon dioxide adsorption of covalently attached polyethyleneimine-functionalized single-wall carbon nanotubes. , 2008, ACS nano.

[19]  Ying Wang,et al.  Efficient CO2 capturer derived from as-synthesized MCM-41 modified with amine. , 2008, Chemistry.

[20]  Lei Liao,et al.  Capture of carbon dioxide by amine-impregnated as-synthesized MCM-41. , 2010, Journal of environmental sciences.

[21]  Yao Shi,et al.  Dual alkali approaches for the capture and separation of CO2 , 2000 .

[22]  Katsunori Yogo,et al.  Adsorption characteristics of carbon dioxide on organically functionalized SBA-15 , 2005 .

[23]  Hee‐Tae Jung,et al.  Synthesis and characterization of ultrahigh crystalline TiO2 nanotubes. , 2006, The journal of physical chemistry. B.

[24]  B. Crittenden,et al.  Adsorption Technology & Design , 1998 .

[25]  V. Zeleňák,et al.  Functionalised micro-/mesoporous silica for the adsorption of carbon dioxide , 2007 .

[26]  J. Tanthana,et al.  Oxide‐supported tetraethylenepentamine for CO2 capture , 2009 .