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The Study of Structural, Textural and Basic Properties of MgAl- and LiAl-LDH Prepared by Mechanochemical Method Review

Общее Language: Английский, Genre: Review,
Status: Published, Source type: Original
Journal Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308
Output data Year: 2020, Volume: 357, Pages: 638-645 Pages count : 8 DOI: 10.1016/j.cattod.2019.04.069
Tags Basic properties; Mechanochemical method; Mg(Li) Al-layered double hydroxides; Textural properties
Authors Stepanova L.N. 1 , Belskaya O.B. 1,2 , Vasilevich А.V. 1 , Gulyaeva T.I. 1 , Leont'eva N.N. 1 , Serkova А.N. 3 , Salanov А.N. 3 , Likholobov V.А. 3
Affiliations
1 Center of New Chemical Technologies BIC, Neftezavodskaya Str., 54, Omsk, 644040, Russian Federation
2 Omsk State Technical University, Mira Ave., 11, Omsk, 644050, Russian Federation
3 Boreskov Institute of Catalysis, Acad. Lavrentieva Ave., 5, Novosibirsk, 630090, Russian Federation

Funding (2)

1 Russian Foundation for Basic Research 18-03-00476 (АААА-А18-118121190005-7)
2 Russian Foundation for Basic Research 18-33-00131 (АААА-А18-118121190006-4)

Abstract: Mechanochemical activation was used to prepare Mg(Li)Al-layered double hydroxides (LDH) with molar ratios of cations Mg/Al = 2 and 4 and Li/Al = 0.5. The influence of cationic composition and nature of interlayer anions (CO 3 2− , OH − ) on the structural properties of LDH and the properties of oxide phases formed by LDH calcination was investigated by XRD and SEM. Textural properties (nitrogen adsorption–desorption isotherms at 77.4 K) and acid-base properties (CO 2 double isotherm method, TPD-CO 2 , aldol condensation of furfural with acetone reaction) were studied in detail for mixed oxides. It was shown that mixed oxides based on the LDH that were prepared by mechanochemical route have high specific surface area and porosity. An increase in the Mg/Al ratio, the introduction of Li, and the use of LDH with OH- counterions made it possible not only to increase the total basicity of mixed oxides but also to vary the fraction of basic sites with a different strength. © 2019
Cite: Stepanova L.N. , Belskaya O.B. , Vasilevich А.V. , Gulyaeva T.I. , Leont'eva N.N. , Serkova А.N. , Salanov А.N. , Likholobov V.А.
The Study of Structural, Textural and Basic Properties of MgAl- and LiAl-LDH Prepared by Mechanochemical Method
Catalysis Today. 2020. V.357. P.638-645. DOI: 10.1016/j.cattod.2019.04.069 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Dec 24, 2018
Accepted: Apr 18, 2019
Published online: Apr 19, 2019
Published print: Nov 1, 2020
Identifiers:
publication_identifier.wos_identifier_type WOS:000579549200066
publication_identifier.scopus_identifier_type 2-s2.0-85064381940
publication_identifier.rinz_identifier_type 38747522
publication_identifier.accession_number_identifier_type 2019:829055
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