AS-synthesized mesoporous silica MSU-1 modified with tetraethylenepentamine for CO2 adsorption

Tetraethylenepentamine (TEPA) was incorporated into as-synthesized mesoporous silica MSU-1 with cheap sodium silicate as silica source to create TEPA/MSU-1, an adsorbent having high adsorption capacity for carbon dioxide. The adsorbents were characterized by X-ray diffraction (XRD), N-2 adsorption/desorption, thermogravimetry (TG), and Flourier transform infrared (FTIR) spectrometry. The XRD results indicated that the adsorbents preserved the mesostructure of MSU-1 after TEPA was loaded. However, the surface area decreased dramatically, indicating that the pores are occupied by amine. TG patterns showed that the adsorbents are thermally unstable at temperatures above 200 degrees C. The FTIR results suggested that CO2 interacts with TEPA to form alkalammonium carbamate. CO2 adsorption isotherms measured at different temperatures revealed that the optimal adsorption temperature is 75 degrees C. Temperature-programmed desorption (TPD) of CO2 showed that the desorption of CO2 achieved maximal desorption rate at about 100 degrees C, and so is appropriate for thermal swing adsorption of CO2 from flue gas. The adsorption capacity of TEPA/MSU-1 with a different TEPA content was calculated through CO2 breakthrough curves. As a result, 50 wt% of TEPA supported on as-synthesized MSU-1 achieved the highest capacity at 3.87 mmol/g. (C) 2011 Elsevier Inc. All rights reserved.

[1]  W. Ahn,et al.  CO2 adsorption using amine-functionalized mesoporous silica prepared via anionic surfactant-mediated synthesis , 2008 .

[2]  Licheng Liu,et al.  A comparative study on catalytic performances of chromium incorporated and supported mesoporous MSU-x catalysts for the oxidehydrogenation of ethane to ethylene with carbon dioxide , 2006 .

[3]  Jiahui Chen,et al.  High-Pressure CO2 Adsorption on a Polymer-Derived Carbon Molecular Sieve , 2008 .

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

[5]  J. Andresen,et al.  Preparation and characterization of novel CO2 “molecular basket” adsorbents based on polymer-modified mesoporous molecular sieve MCM-41 , 2003 .

[6]  Carlos A. Grande,et al.  Hydrotalcite Materials for Carbon Dioxide Adsorption at High Temperatures: Characterization and Diffusivity Measurements , 2005 .

[7]  Costas Tsouris,et al.  Separation of CO2 from Flue Gas: A Review , 2005 .

[8]  Bruce G. Miller,et al.  Novel Polyethylenimine-Modified Mesoporous Molecular Sieve of MCM-41 Type as High-Capacity Adsorbent for CO2 Capture , 2002 .

[9]  Covadonga Pevida,et al.  CO2 capture by adsorption with nitrogen enriched carbons , 2007 .

[10]  Yuan Chun,et al.  CO2 Capture by As‐Prepared SBA‐15 with an Occluded Organic Template , 2006 .

[11]  Zhi Ping Xu,et al.  Influence of Water on High-Temperature CO2 Capture Using Layered Double Hydroxide Derivatives , 2008 .

[12]  V. Zeleňák,et al.  Amine-modified SBA-12 mesoporous silica for carbon dioxide capture: Effect of amine basicity on sorption properties , 2008 .

[13]  Tao Zhang,et al.  CO2 adsorption on SBA-15 modified by aminosilane , 2007 .

[14]  Covadonga Pevida,et al.  Preparation of carbon dioxide adsorbents from the chemical activation of urea–formaldehyde and melamine–formaldehyde resins , 2007 .

[15]  A. Rodrigues,et al.  Adsorption of Carbon Dioxide onto Hydrotalcite-like Compounds (HTlcs) at High Temperatures , 2001 .

[16]  Alírio E. Rodrigues,et al.  Adsorption Equilibrium of Methane, Carbon Dioxide, and Nitrogen on Zeolite 13X at High Pressures , 2004 .

[17]  Lin Sun,et al.  Promoting the CO2 adsorption in the amine-containing SBA-15 by hydroxyl group , 2008 .

[18]  Covadonga Pevida,et al.  Silica-templated melamine–formaldehyde resin derived adsorbents for CO2 capture , 2008 .

[19]  Daniel Chinn,et al.  Amine-Grafted MCM-48 and Silica Xerogel as Superior Sorbents for Acidic Gas Removal from Natural Gas , 2003 .

[20]  Xiaoxing Wang,et al.  Infrared Study of CO2 Sorption over ?Molecular Basket? Sorbent Consisting of Polyethylenimine-Modified Mesoporous Molecular Sieve , 2009 .

[21]  Youqing Shen,et al.  Flue-Gas Carbon Capture on Carbonaceous Sorbents: Toward a Low-Cost Multifunctional Carbon Filter for "Green" Energy Producers † , 2008 .

[22]  A. D. Wright,et al.  Performance of sorption-enhanced water-gas shift as a pre-combustion CO2 capture technology , 2009 .

[23]  E. A. Payzant,et al.  Structural Effects on the High Temperature Adsorption of CO2 on a Synthetic Hydrotalcite , 2004 .

[24]  R. Siriwardane,et al.  Adsorption of CO2 on Zeolites at Moderate Temperatures , 2005 .

[25]  Yao Shi,et al.  Adsorption of carbon dioxide on organically functionalized SBA-16 , 2008 .

[26]  Nada Assaf-Anid,et al.  Curbing the greenhouse effect by carbon dioxide adsorption with Zeolite 13X , 2007 .

[27]  Zong-Xin Wu,et al.  Experimental Study on Adsorption of Carbon Dioxide by 5A Molecular Sieve for Helium Purification of High-Temperature Gas-Cooled Reactor , 2009 .

[28]  Bert Metz,et al.  Carbon Dioxide Capture and Storage , 2005 .

[29]  Rajamani Krishna,et al.  Segregation effects in adsorption of CO2-containing mixtures and their consequences for separation selectivities in cage-type zeolites , 2008 .

[30]  J. Poston,et al.  Adsorption of CO2 on molecular sieves and activated carbon , 2001 .

[31]  P. Harlick,et al.  An experimental adsorbent screening study for CO2 removal from N2 , 2004 .

[32]  Synthesis of mesoporous silica with tunable pore size from sodium silicate solutions and a polyethylene oxide surfactant , 1999 .

[33]  P. Harlick,et al.  Adsorption of carbon dioxide, methane and nitrogen: pure and binary mixture adsorption for ZSM-5 with SiO2/Al2O3 ratio of 280 , 2003 .

[34]  Xiaoliang Ma,et al.  "Molecular basket" sorbents for separation of CO(2) and H(2)S from various gas streams. , 2009, Journal of the American Chemical Society.

[35]  J. J. Pis,et al.  Surface modification of activated carbons for CO2 capture , 2008 .

[36]  P. Harlick,et al.  Applications of Pore-Expanded Mesoporous Silica. 2. Development of a High-Capacity, Water-Tolerant Adsorbent for CO2 , 2005 .

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

[38]  Won-Jin Son,et al.  Adsorptive removal of carbon dioxide using polyethyleneimine-loaded mesoporous silica materials , 2008 .

[39]  Alírio E. Rodrigues,et al.  CO2 sorption on hydrotalcite and alkali-modified (K and Cs) hydrotalcites at high temperatures , 2008 .

[40]  A. Bengueddach,et al.  Adsorption of carbon dioxide at high pressure over H-ZSM-5 type zeolite. Micropore volume determinations by using the Dubinin–Raduskevich equation and the “t-plot” method , 2008 .

[41]  Diana N. Tran,et al.  Ethylenediamine-modified SBA-15 as Regenerable CO2 Sorbent , 2005 .