Crystallization of SAPO-11 Molecular Sieves Prepared from Silicoaluminophosphate Gels Using Boehmites with Different Properties | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

Gels
, E-ISSN: 2310-2861

Output data

Year: 2023, Volume: 9, Number: 2, Article number : 123, Pages count : 18 DOI: 10.3390/gels9020123

Tags

silicoaluminophosphate gels; boehmite; silicoaluminophosphate SAPO-11; nanocrystals; hierarchical zeolites

Authors

Agliullin Marat R. ¹ , Cherepanova Svetlana V. ² , Fayzullina Zulfiya R. ³ , Serebrennikov Dmitry V. ¹ , Khalilov Leonard M. ¹ , Prosochkina Tatyana R. ³ , Kutepov Boris I. ^1,3

Affiliations

1	Ufa Federal Research Centre of the Russian Academy of Sciences (UFRC RAS), Institute of Petrochemistry and Catalysis, 450075 Ufa, Russia
2	Federal Research Center Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
3	Faculty of Technology, Ufa State Petroleum Technological University, 450064 Ufa, Russia

Funding (1)

Russian Science Foundation

21-73-00013 (122030400422-2)

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.

Agliullin M.R. , Cherepanova S.V. , Fayzullina Z.R. , Serebrennikov D.V. , Khalilov L.M. , Prosochkina T.R. , Kutepov B.I.
Crystallization of SAPO-11 Molecular Sieves Prepared from Silicoaluminophosphate Gels Using Boehmites with Different Properties
Gels. 2023. V.9. N2. 123 :1-18. DOI: 10.3390/gels9020123 WOS Scopus РИНЦ AN PMID OpenAlex

Submitted:	Dec 16, 2022
Accepted:	Jan 27, 2023
Published print:	Feb 2, 2023
Published online:	Feb 2, 2023

Web of science:	WOS:000938614700001
Scopus:	2-s2.0-85148873235
Elibrary:	54893979
Chemical Abstracts:	2023:447897
PMID:	36826293
OpenAlex:	W4319005313

DB	Citing
Scopus	1
Elibrary	1