Pressure-induced chemistry for the 2D to 3D transformation of zeolites

0490676 - ÚFCH JH 2019 RIV GB eng J - Journal Article
Mazur, M. - Arevalo-Lopez, A. M. - Wheatley, P. S. - Bignami, G. P. M. - Ashbrook, S. E. - Morales-García, A. - Nachtigall, P. - Attfield, M. P. - Čejka, Jiří - Morris, R. E.
Pressure-induced chemistry for the 2D to 3D transformation of zeolites.
Journal of Materials Chemistry A. Roč. 6, č. 13 (2018), s. 5255-5259. ISSN 2050-7488. E-ISSN 2050-7496
R&D Projects: GA ČR GBP106/12/G015
Institutional support: RVO:61388955
Keywords : mechanism * channels * uov
OECD category: Physical chemistry
Impact factor: 10.733, year: 2018

ADOR, an unconventional synthesis strategy based on a four-step mechanism: assembly, disassembly, organization, and reassembly, has opened new possibilities in zeolite chemistry. The ADOR approach led to the discovery of the IPC family of materials with tuneable porosity. Here we present the first pressure-induced ADOR transformation of 2D zeolite precursor IPC-1P into fully crystalline 3D zeolite IPC-2 (OKO topology) using a Walker-type multianvil apparatus under a pressure of 1 GPa at 200 degrees C. Surprisingly, the high-pressure material is of lower density (higher porosity) than the product obtained from simply calcining the IPC-1P precursor at high temperature, which produces IPC-4 (PCR topology). The sample was characterized by PXRD, 29Si MAS NMR, SEM, and HRTEM. Theoretical calculations suggest that high pressure can lead to the preparation of other ADOR zeolites that have not yet been prepared.
Permanent Link: http://hdl.handle.net/11104/0284825