The effects of high-pressure on the chemisorption process of CO2 on lithium oxosilicate (Li8SiO6)

被引:23
作者
Diaz-Herrera, Pablo R. [1 ]
Ramirez-Moreno, Margarita J. [1 ]
Pfeiffer, Heriberto [1 ]
机构
[1] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
关键词
Lithium silicate; High pressure; CO2; capture; Chemisorption; CARBON-DIOXIDE CAPTURE; HIGH-TEMPERATURE; ADSORPTION; SORPTION; SORBENTS; GAS;
D O I
10.1016/j.cej.2014.11.057
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
High-pressure CO2 capture was evaluated on Li8SiO6. Several different high-pressure experiments were performed using CO2, and the sample products were analyzed using XRD, N-2 adsorption, SEM and DSC. The results clearly showed that CO2 is chemically and physically trapped and that the CO2 chemisorption improved as a function of temperature. Depending on the temperature, Li8SiO6 reacted with 2 mol or less of CO2 to produce an external shell composed of Li4SiO4, Li2CO3 and Li2O in a non-stoichiometric reaction. Independently of the external shell composition, the final surface area and pore volume increased independent of the external shell composition and favored the second sorption process: CO2 adsorption. Therefore, high pressures enhance CO2 capture between 30 and 350 degrees C, promoting the chemisorption and adsorption processes. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:10 / 15
页数:6
相关论文
共 33 条
  • [1] Adsorbent Materials for Carbon Dioxide Capture from Large Anthropogenic Point Sources
    Choi, Sunho
    Drese, Jeffrey H.
    Jones, Christopher W.
    [J]. CHEMSUSCHEM, 2009, 2 (09) : 796 - 854
  • [2] CO2 capture with a novel solid fluidizable sorbent: Thermodynamics and Temperature Programmed Carbonation-Decarbonation
    Chowdhury, Muhammad B. I.
    Quddus, Mohammad R.
    deLasa, Hugo I.
    [J]. CHEMICAL ENGINEERING JOURNAL, 2013, 232 : 139 - 148
  • [3] Equilibria and kinetics of CO2 adsorption on hydrotalcite adsorbent
    Ding, Y
    Alpay, E
    [J]. CHEMICAL ENGINEERING SCIENCE, 2000, 55 (17) : 3461 - 3474
  • [4] CO2 capture properties of lithium silicates with different ratios of Li2O/SiO2: an ab initio thermodynamic and experimental approach
    Duan, Yuhua
    Pfeiffer, Heriberto
    Li, Bingyun
    Romero-Ibarra, Issis C.
    Sorescu, Dan C.
    Luebke, David R.
    Halley, J. Woods
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (32) : 13538 - 13558
  • [5] Analysis of the CO2 chemisorption reaction mechanism in lithium oxosilicate (Li8SiO6): a new option for high-temperature CO2 capture
    Duran-Munoz, Fernando
    Romero-Ibarra, Issis C.
    Pfeiffer, Heriberto
    [J]. JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (12) : 3919 - 3925
  • [6] Low temperature biomimetic synthesis of the Li2ZrO3 nanoparticles containing Li6Zr2O7 and high temperature CO2 capture
    Kang, Shi-Zhao
    Wu, Tan
    Li, Xiangqing
    Mu, Jin
    [J]. MATERIALS LETTERS, 2010, 64 (12) : 1404 - 1406
  • [7] A comparative study of CO2 sorption properties for different oxides
    Kumar S.
    Saxena S.K.
    [J]. Kumar, Sushant (skuma002@fiu.edu), 1600, SpringerOpen (03):
  • [8] Lowell S., 2004, CHARACTERIZATION POR, P129
  • [9] An overview of CO2 capture technologies
    MacDowell, Niall
    Florin, Nick
    Buchard, Antoine
    Hallett, Jason
    Galindo, Amparo
    Jackson, George
    Adjiman, Claire S.
    Williams, Charlotte K.
    Shah, Nilay
    Fennell, Paul
    [J]. ENERGY & ENVIRONMENTAL SCIENCE, 2010, 3 (11) : 1645 - 1669
  • [10] Influence of steam partial pressures in the CO2 capture capacity of K-doped hydrotalcite-based sorbents for their application to SEWGS processes
    Marono, Marta
    Torreiro, Yarima
    Gutierrez, Luis
    [J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 2013, 14 : 183 - 192