Structural and Textural Characteristics of Systems Based on Layered Mg–Al Hydroxides Full article
Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Output data | Year: 2015, Volume: 56, Number: 3, Pages: 347-358 Pages count : 12 DOI: 10.1134/S002315841503012X | ||||
Tags | High Resolution Transmission Electron Microscopy; Layered Double Hydroxide; Interplanar Spacing; Hydrotalcite | ||||
Authors |
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Affiliations |
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Funding (2)
1 | The Ministry of Education and Science of the Russian Federation | |
2 | Novosibirsk National Research University |
Abstract:
Hydrotalcite-type layered Mg-Al hydroxides with Mg/Al ≥ 2 and related oxide systems have been synthesized and characterized. During the synthesis of the Mg-Al hydroxides with Mg/Al = 2 and 3, the interplanar spacings decrease because of the replacement of the interlayer NO 3 − anion by the CO 3 2− anion. Morphologically, the initial materials are aggregates of ∼1-μm oblong planar particles with a layered structure. The transverse dimension of the plates is 50–100 nm, and their thickness is 10–30 nm. As a rule, these planar particles are heavily distorted. Heat treatment of the Mg-Al hydroxides in the temperature range from 450 to 600°C causes the separation of the layered structures into planar domains of epitaxial MgAl2O4/MgO structures, which survive heat treatment at 900°C. During this heat treatment at 900°C, the greater part of the sample breaks down into two-dimensional particles of defective MgO and MgAl2O4 phases whose size is up to 100 nm. The oxide compositions synthesized from the layered Mg-Al hydroxides have a large pore volume and a fairly high specific surface area, which are retained upon heat treatment at 1000–1100°C.
Cite:
Korneeva E.V.
, Ivanova A.S.
, Plyasova L.M.
, Zaikovskii V.I.
Structural and Textural Characteristics of Systems Based on Layered Mg–Al Hydroxides
Kinetics and Catalysis. 2015. V.56. N3. P.347-358. DOI: 10.1134/S002315841503012X WOS Scopus РИНЦ
Structural and Textural Characteristics of Systems Based on Layered Mg–Al Hydroxides
Kinetics and Catalysis. 2015. V.56. N3. P.347-358. DOI: 10.1134/S002315841503012X WOS Scopus РИНЦ
Original:
Корнеева Е.В.
, Иванова А.С.
, Плясова Л.М.
, Зайковский В.И.
Структурные и текстурные характеристики систем на основе слоистых Mg-Al-гидроксидов
Кинетика и катализ. 2015. Т.56. №3. С.346-358. DOI: 10.7868/S0453881115030120 РИНЦ
Структурные и текстурные характеристики систем на основе слоистых Mg-Al-гидроксидов
Кинетика и катализ. 2015. Т.56. №3. С.346-358. DOI: 10.7868/S0453881115030120 РИНЦ
Dates:
Submitted: | Apr 15, 2014 |
Published print: | May 1, 2015 |
Published online: | Jun 17, 2015 |
Identifiers:
Web of science | WOS:000356369200014 |
Scopus | 2-s2.0-84934964688 |
Elibrary | 23985084 |
Chemical Abstracts | 2015:1022041 |
Chemical Abstracts (print) | 167:590419 |
OpenAlex | W612356377 |