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. 2011 Jul 20;27(17):11118–11128. doi: 10.1021/la202033p

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Copyright © 2011 American Chemical Society

This is an open-access article distributed under the ACS AuthorChoice Terms & Conditions. Any use of this article, must conform to the terms of that license which are available at http://pubs.acs.org.

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Region of the IR spectra of MCM-48/APTES contacted with 20 vol % CO₂ in N₂ (a) at pressures of 2, 5, 10, 50, 100, 200, 400, 600, and 760 Torr (from bottom to top) in the adsorption branch and (b) at pressures of 760, 600, 400, 200, 100, 50, 10, and 2 Torr after 20 min of evacuation and after heat treatment (from top to bottom) in the desorption branch and MCM-48/APTES contacted with water-saturated 20 vol % CO₂ in N₂ (c) at pressures of 1, 5, 12, 50, 100, 200, 400, 600, and 760 Torr (from bottom to top) in the adsorption branch and (d) at pressures of 760, 600, 400, 200, 100, 50, 10, and 2 Torr after 20 min of evacuation and after heat treatment (from top to bottom) in the desorption branch.