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- W1997309616 abstract "A computer-programmed microcalorimetric investigation of NH3 adsorption at 423 K was applied to characterize the modified acidity of ZSM-5 zeolite impregnated with increasing amounts of H3BO3. Zeolite samples were pre-treated at two different temperature regimes: 1.33 mPa/673 K/12 h and 1.33 mPa/1073 K/12 h. A combination of volumetric, calorimetric and thermokinetic data revealed that the former pretreatment was responsible for removing part of the Bro˝nsted sites, while the latter also induced pore plugging, which therefore drastically reduced the overall zeolite acidity. Zeolite impregnation with increasing amounts of H3BO3 contributed to an increased loss of acidity. Special emphasis is placed on the effect of high-temperature treatment on lattice element exchange and its importance for zeolite-binder interactions." @default.
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- W1997309616 date "1986-05-01" @default.
- W1997309616 modified "2023-09-25" @default.
- W1997309616 title "Effect of impregnation of ZSM-5 with H3BO3 on its acidity: A microcalorimetric study of NH3 adsorption" @default.
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- W1997309616 doi "https://doi.org/10.1016/s0166-9834(00)81451-7" @default.
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