Neutron scattering study of adsorption in porous MCM-41 silica

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DOIResolve DOI: http://doi.org/10.1139/P09-086
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TypeArticle
Journal titleCanadian Journal of Physics
Volume88
Issue10
Pages707713; # of pages: 7
AbstractAdsorption of n-pentane on MCM-41 silica has been studied by neutron scattering on both the adsorption and desorption isotherms. Adsorption takes place without hysteresis in either the isotherm or the neutron scattering profile. Adsorption of contrast-matched pentane in porous MCM-41 silica at first increases the intensity of the (10) Bragg peak but reduces the (11) and (20) peaks, and as the pores are filled the intensities of all Bragg peaks are reduced to zero. The SANS background has a 1/Q dependence, typical of a material prepared with templates of one-dimensional character (cylinders). The initial increase of (10) intensity allows estimation of the cylindrical pore diameter to be 37 A° based on the variation of form factor as a function of the cylinder radius.
Publication date
LanguageEnglish
AffiliationNRC Canadian Neutron Beam Centre; National Research Council Canada
Peer reviewedYes
NPARC number16959077
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Record identifier9cbe38f0-7e42-4ce8-873c-515ef866ad70
Record created2011-03-03
Record modified2016-05-09
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