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. 2019 Nov 12;10:5129. doi: 10.1038/s41467-019-12882-3

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Basic characterisation of IPC-18. a XRD patterns of IPC-18: experimental (black), calculated after Rietveld refinement (red), and the difference between them (blue); b, c crystallographic models of IPC-18 in the ab projection demonstrating 12 and 8-ring pores (b), and in ac projection, showing connectivity between layers through S4R units (c); d nitrogen adsorption and desorption isotherms for parent IWW and daughter IPC-18 zeolites; e pore size distribution for initial IWW (black) and final IPC-18 (red); f ²⁹Si MAS NMR spectra of IWW, intermediate IPC-18P and IPC-18 samples