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The intracrystalline diffusivities of benzene, toluene and para-xylene in MFI-type zeolites with different amounts of acid sites were measured using the constant volume method at temperatures between 423 and 723K and a pressure below 0.70kPa. The intracrystalline diffusivities for the MFI-type zeolites with acid sites showed a different temperature dependence in high- and low-temperature regions....
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