Research output: Contribution to journal › Article › peer-review
Sol–gel synthesis and characterization of two-component systems based on MgO. / Vedyagin, Aleksey A.; Mishakov, Ilya V.; Karnaukhov, Timofey M. et al.
In: Journal of Sol-Gel Science and Technology, Vol. 82, No. 2, 01.05.2017, p. 611-619.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Sol–gel synthesis and characterization of two-component systems based on MgO
AU - Vedyagin, Aleksey A.
AU - Mishakov, Ilya V.
AU - Karnaukhov, Timofey M.
AU - Krivoshapkina, Elena F.
AU - Ilyina, Ekaterina V.
AU - Maksimova, Tatyana A.
AU - Cherepanova, Svetlana V.
AU - Krivoshapkin, Pavel V.
N1 - Publisher Copyright: © 2017, Springer Science+Business Media New York.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - A series of two-component MOx–MgO systems, where M is Cu, Ni, Co, Fe, Mo or W, was synthesized by sol–gel technique. Aqueous solution of inorganic salt-precursor was used as a hydrolyzing agent. Initial xerogels and final oxides were characterized using X-ray diffraction analysis, scanning electron microscopy and low-temperature nitrogen adsorption. Decomposition of xerogels was studied by differential thermal analysis. According to X-ray diffraction analysis, all xerogel samples are characterized with turbostratic structures regardless of nature of the second component. At the same time, presence of inorganic salt in magnesium hydroxide matrix shifts the temperature of decomposition of latter towards lower values. Structural and textural characteristics of MgO-based oxide systems were found to be strongly affected by the additive. Formation of joint phase was observed in the case of cobalt oxide. In most cases, additives turned out to be even distributed in the bulk of MgO, except for WO3. This oxide formed large agglomerates because of low solubility of precursor.
AB - A series of two-component MOx–MgO systems, where M is Cu, Ni, Co, Fe, Mo or W, was synthesized by sol–gel technique. Aqueous solution of inorganic salt-precursor was used as a hydrolyzing agent. Initial xerogels and final oxides were characterized using X-ray diffraction analysis, scanning electron microscopy and low-temperature nitrogen adsorption. Decomposition of xerogels was studied by differential thermal analysis. According to X-ray diffraction analysis, all xerogel samples are characterized with turbostratic structures regardless of nature of the second component. At the same time, presence of inorganic salt in magnesium hydroxide matrix shifts the temperature of decomposition of latter towards lower values. Structural and textural characteristics of MgO-based oxide systems were found to be strongly affected by the additive. Formation of joint phase was observed in the case of cobalt oxide. In most cases, additives turned out to be even distributed in the bulk of MgO, except for WO3. This oxide formed large agglomerates because of low solubility of precursor.
KW - Characterization
KW - MgO
KW - Sol–gel synthesis
KW - Two-component oxide systems
KW - OXIDATION
KW - DESTRUCTIVE SORPTION
KW - CARBON
KW - NANOCRYSTALS
KW - DECOMPOSITION
KW - STATE
KW - CATALYST
KW - Sol-gel synthesis
KW - MAGNESIUM
KW - TEMPERATURE
KW - COBALT OXIDE
UR - http://www.scopus.com/inward/record.url?scp=85012164940&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/05134bca-1dec-3ee7-ac2b-5963ca245a7c/
U2 - 10.1007/s10971-017-4321-3
DO - 10.1007/s10971-017-4321-3
M3 - Article
AN - SCOPUS:85012164940
VL - 82
SP - 611
EP - 619
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
SN - 0928-0707
IS - 2
ER -
ID: 10310371