NDLI: Crystallization of SAPO-11 Molecular Sieves Prepared from Silicoaluminophosphate Gels Using Boehmites with Different Properties.

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Crystallization of SAPO-11 Molecular Sieves Prepared from Silicoaluminophosphate Gels Using Boehmites with Different Properties.

Content Provider	Europe PMC
Author	Agliullin, Marat R. Cherepanova, Svetlana V. Fayzullina, Zulfiya R. Serebrennikov, Dmitry V. Khalilov, Leonard M. Prosochkina, Tatyana R. Kutepov, Boris I.
Editor	Grassi, Mario
Copyright Year	2023
Abstract	In this article, we report the results of research the formation of silicoaluminophosphate gels under changing gel aging conditions and the influence of an aluminum source (boehmite), characterized by different properties. The samples of initial gels were characterized by XRF, X-ray diffraction, MAS NMR 27Al and 31P, and scanning electron microscopy (SEM). Products of crystallization were characterized by XRF, X-ray diffraction, MAS NMR 27Al and 31P, scanning electron microscopy (SEM), N2-physical adsorption, and IR spectroscopy with pyridine adsorption. It has been established that the chemical and phase composition of aging gels and the products of further crystallization is conditioned by the size of the crystals and the porous structure of boehmite. Methods of management the morphology and secondary porous structure of SAPO-11, including the hierarchical porous structure, are proposed based on the use of boehmits characterized by different properties and changing the aging conditions of the initial gels. SAPO—based catalyst with a hierarchical porous structure showed excellent catalytic performance in dimerization of α-methylstyrene with a high degree of conversion and selectivity for linear isomers.
Journal	Gels
Volume Number	9
PubMed Central reference number	PMC9956135
Issue Number	2
PubMed reference number	36826293
e-ISSN	23102861
DOI	10.3390/gels9020123
Language	English
Publisher	MDPI
Publisher Date	2023-02-02
Access Restriction	Open
Rights License	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 (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors.
Subject Keyword	silicoaluminophosphate gels boehmite silicoaluminophosphate SAPO-11 nanocrystals hierarchical zeolites
Content Type	Text
Resource Type	Article
Subject	Bioengineering Biomaterials Polymers and Plastics Organic Chemistry

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