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Insight into the ADOR zeolite-to-zeolite transformation: UOV case


IPC-12 zeolite is the first member of ADOR family produced by the structural transformation of UOV. The details of UOV rearrangement were studied to determine the influence of properties of parent zeolite and treatment conditions on the outcome of IPC-12 formation. It was established that incomplete disassembly of UOV can be caused by insufficient lability of interlayer connectivity in parent material possessing Si-enriched D4Rs or by inhibition of hydrolysis by diluted acid at high temperature. The impacts of specific interactions of the framework with anions on controllable breaking of interlayer connectivity as well as the conditions of the treatment at low pH (< –1) on the characteristics of produced IPC-12 were found to be negligible. Concentration of acid significantly influences the extent and even the direction of UOV transformation. Layers disassembly is inhibited in 1 – 4 M acid solutions, complete hydrolysis to layered precursor can be achieved in 0.1 M, while application of 12 M solution lead to direct formation of IPC-12. Layers reassembly followed using in situ XRD measurement with synchrotron source was found to be gradual process starting already at 40 °C and completing at 200 – 220 °C.

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Publication details

The article was received on 06 Oct 2017, accepted on 05 Dec 2017 and first published on 06 Dec 2017

Article type: Paper
DOI: 10.1039/C7DT03751A
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Insight into the ADOR zeolite-to-zeolite transformation: UOV case

    V. Kasneryk, M. Shamzhy, M. Opanasenko, P. S. S. Wheatley, R. Morris and J. Čejka, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT03751A

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