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. 2019 May 10;12(9):1536. doi: 10.3390/ma12091536

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Transmission electron microscopy (TEM) results of synthesized zeolite 4A: (a,b) TEM micrograph, (c,d) lattice fringes, (e) selected-area electron diffraction (SAED), and (f) energy-dispersive X-ray (EDX) pattern.