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- W2347227029 abstract "The stability of Zn/HZSM 5 prepared by ion exchange and impregnation techniques was investigated. The catalyst reactivity for converting propane to aromatics was tested with different times on stream. The acidity and the amount of coke of the catalysts after aromatization reaction were determined by NH3 TPD and TG, and the patterns of the coking catalysts were observed by TEM. The results show the catalyst deactivation is mainly due to coke deposition. The regeneration process was carried out in air at 520℃. The activity and selectivity of the regenerated catalysts were tested after several cycles of deactivation regeneration. It was found that after the first cycle, the activity decreased, but selectivity increased a little and the rate of deactivation clearly decreased. After the second cycle, the activity, selectivity and rate of deactivation of the catalyst remained almost unchanged. The experiments also show that the catalysts zinc content decreased very little over three cycles of deactivation regeneration." @default.
- W2347227029 created "2016-06-24" @default.
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- W2347227029 date "2000-01-01" @default.
- W2347227029 modified "2023-09-26" @default.
- W2347227029 title "Stability of Zn/HZSM-5 catalysts in reaction regeneration process of propane aromatization" @default.
- W2347227029 hasPublicationYear "2000" @default.
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