Adsorption of CO$_{2}$ in porous MCM-41 and MCM-48 using small angle scattering

ORAL

Abstract

Adsorption of CO$_{2}$ onto the surface of nanopores in organic rich materials, such as shale and coals, is of great interest for understanding the processes associated with geological sequestration. These natural materials have complex pore structures which make the interpretation of experimental sorption measurements complicated. MCMs are synthetic materials with a well-defined regular porous structure that provides an ideal substrate to evaluate the models for the adsorption of gases (CO$_{2})$ into nanopores. Samples of MCM-41 and MCM-48 were synthesized at Indiana University and were characterized by nitrogen adsorption isotherms and Small Angle X-ray Scattering (SAXS). SANS studies were carried out on MCMs with different pore sizes as a function of pore filling and the results are interpreted in terms of layer growth models.

*Construction of LENS was supported by the NSF grants DMR-0220560 and DMR-0320627, the 21st Century Science and Technology fund of Indiana, Indiana University, and the Department of Defense. Operation of LENS is supported by Indiana University.

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Authors

  • Bo Wang

    • Dept. of Physics and LENS, Indiana University

  • Narayan C. Das

    • LENS, Indiana University
    • Center for the Exploration of Energy and Matter

  • Garfield Warren

    • Dept. of Physics, Indiana University

  • John Rupp

    • Indiana Geological Survey, Indiana University

  • Maria Mastalerz

    • Indiana Geological Survey, Indiana University

  • Timothy Prisk

    • Dept. of Physics and LENS, Indiana University
    • Indiana University

  • Paul Sokol

    • Dept. of Physics and LENS, Indiana University
    • Indiana University