Phenylalanine and arginine adsorption in zeolites X, Y, and β

John E. Krohn, Michael Tsapatsis

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


This paper documents a continuation of work published in Langmuir 2005, 21, 8743-8750. We report new aspects of this umino acid adsorption study, including the effect of changing zeolite framework type and results from adsorption of mixed amino acids. In single-amino-acid adsorption experiments, zeolite Y (Si/Al = 2.5) was found to adsorb no phenylaianine while admitting arginine to a similar extent as observed with zeolite β. Using this zeolite Y, we measured mixed-amino-acid separation selectivities for arginine/phenylalanine as large as 25 000 or 2 orders of magnitude larger than the corresponding selectivities measured with zeolite β.

Original languageEnglish (US)
Pages (from-to)9350-9356
Number of pages7
Issue number22
StatePublished - Oct 24 2006


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