Low field 1H NMR characterization of mesoporous silica MCM-41 and SBA-15 filled with different amount of water
作者： A.T. Krzyżak , I. Habina
DOI: 10.1016/J.MICROMESO.2016.05.032
关键词:
摘要: Abstract The low field 1 H NMR characterization of pure mesoporous silica materials – MCM-41 and SBA-15 as a function water content is presented. values surface relaxivities for both were estimated in order to compare pore size distributions obtained from relaxation spectra N 2 adsorption measurements. This comparison led differentiation between contributions ‘inner-bulk’ molecules pores these the surface. T /T ratio reflecting strength interaction was confirmed be higher SBA-15. Measurements mesopore partially covered by provided quantitative information on hydroxylation rate.
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