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Germanosilicate Precursors of ADORable Zeolites Obtained by Disassembly of ITH, ITR, and IWR Zeolites

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DOI

https://doi.org/10.1021/cm502953s
Final published version

Author(s)

Mariya Shamzhy, Maksym Opanasenko, Yuyang Tian, Kateryna Konysheya, Oleksiy Shyets, Russell E. Morris, Jiri Cejka

School/Research organisations

Abstract

Structure transformation of germanosilicate zeolites ITH, ITR, and IWR containing hydrolytically unstable interlayer Ge-O bonds was investigated and is related to the conditions of acidic treatment (i.e., concentration of hydrochloric acid, temperature, duration). The disassembly of ITH (Si/Ge = 2.5), ITR (Si/Ge = 2.4), and IWR (Si/Ge = 6.9) zeolites under appropriate acidic treatment was demonstrated. Low-concentration acid solutions (e.g., 0.01 M HC1) and low temperatures favor the hydrolysis of the zeolites under study. The chemical composition of the parent zeolites strongly influences the efficiency of hydrolysis. For zeolites having sufficient fraction (ca. 50%) of Ge in D4R units (Si/Ge 6 for ITH and IWR, Si/Ge

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Details

Original language	English
Pages (from-to)	5789-5798
Number of pages	10
Journal	Chemistry of Materials
Volume	26
Issue number	19
DOIs	https://doi.org/10.1021/cm502953s
Publication status	Published - 14 Oct 2014

Research areas

LARGE-PORE ZEOLITE, LAYERED PRECURSOR, FRAMEWORK DENSITY, MOLECULAR-SIEVES, STRUCTURE ITQ-13, GERMANIUM, TRANSFORMATION, PERSPECTIVES, UNITS, GE

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