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.

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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