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| - Effect of Pore Width on Micropore Filling Mechanism of SO2 in Carbon Micropores
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| - The mechanism of SO2 micropore filling in slit-shapedmicropores was examined by direct calorimetry andpotential calculation, and the effect of the pore width on theSO2 micropore filling mechanism is discussed.Four kinds of activated carbon fibers of different pore widthshave been used, and both granular activatedcarbon and microporous Boehmite aggregates were used for comparison.The differential energy of SO2adsorption (qd) on ACFs varied with change ofthe average pore width. An increase of the microporewidthleads to a decrease of qd in SO2micropore filling by decreasing the enhanced micropore field.Molecularpotential calculations gave good agreement with the experimentaladsorption energy when the image potentialdue to the SO2 dipole moment was considered. The imagepotential contributes 25−32% to the total molecularpotential, indicating its importance in micropore filling of dipolarSO2.
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