Studies on Adsorption Properties and Secondary Pore Structure of REUSY-Ex

Abstract

Abstract: The adsorption properties and secondary pore structure of REUSY-Ex were studied by using BETmethod (benzene and n-heptane as absorbates respectively) and N₂ adsorption method.The hysteresis loops were observed in the isotherms of N₂ adsorption on USY, REUSYand REUSY-Ex, which showed obviously that the secondary pores were produced in the process of hydrothermal treatment.The acid leaching could extract extra-framework aluminum species filled in the secondary pores and micropores of REUSY.The results of 29Si MAS NMR showed that the chemical surroudings of framework silicon are more uniform after acid leaching.

Key words: Adsorption, Secondary pore, REUSY, HCl leaching

TrendMD:

BAO Shu-lin, FU Jun, XU Qin-hua, CHEN Xue-da, YIN Ze-qun. Studies on Adsorption Properties and Secondary Pore Structure of REUSY-Ex[J]. Chem. J. Chinese Universities, 1992, 13(7): 880.

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Studies on Adsorption Properties and Secondary Pore Structure of REUSY-Ex

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