Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Influence of reaction conditions and kinetic analysis of the selective hydrogenation of oleic acid toward fatty alcohols on Ru-Sn-B/Al2O3 in the flow reactor. / Rodina, V. O.; Ermakov, D. Yu; Saraev, A. A. и др.
в: Applied Catalysis B: Environmental, Том 209, 15.07.2017, стр. 611-620.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Influence of reaction conditions and kinetic analysis of the selective hydrogenation of oleic acid toward fatty alcohols on Ru-Sn-B/Al2O3 in the flow reactor
AU - Rodina, V. O.
AU - Ermakov, D. Yu
AU - Saraev, A. A.
AU - Reshetnikov, S. I.
AU - Yakovlev, V. A.
PY - 2017/7/15
Y1 - 2017/7/15
N2 - The hydrogenation of oleic acid (cis-9-octadecenoic acid) into oleyl alcohol (methyl-9-octadecen-1-ol) was studied in the presence of a bimetallic RuSn supported over alumina catalyst in the flow reactor. It was shown that the process should be performed at the temperature range of 280–330 °C, hydrogen pressure of 3.5–5.3 MPa and contact time less than 0.2 h in order to obtain the highest possible yield of desired products (fatty alcohols and waxes). The study by physicochemical methods (XRD, BET, TPR, XPS, TEM) revealed that modification of the catalyst with boron promotes additional simultaneous reduction of the major part of tin and ruthenium oxides, most of which are reduced below 310 °C. Crystalline RuxSny structures with variable composition, which seem to be the active component of the selective hydrogenation catalyst, were found to be formed after the reaction at temperatures higher than 300 °C. Our work demonstarted that a scheme of oleic acid transformations includes formation of waxes by recombination of carboxyl and alkanes intermediates, acid decarboxylation and hydrocracking of waxes to alkanes. Mathematic simulation methods allowed us to estimate rate constants of the process stages and the main kinetic parameters (Ea, k0).
AB - The hydrogenation of oleic acid (cis-9-octadecenoic acid) into oleyl alcohol (methyl-9-octadecen-1-ol) was studied in the presence of a bimetallic RuSn supported over alumina catalyst in the flow reactor. It was shown that the process should be performed at the temperature range of 280–330 °C, hydrogen pressure of 3.5–5.3 MPa and contact time less than 0.2 h in order to obtain the highest possible yield of desired products (fatty alcohols and waxes). The study by physicochemical methods (XRD, BET, TPR, XPS, TEM) revealed that modification of the catalyst with boron promotes additional simultaneous reduction of the major part of tin and ruthenium oxides, most of which are reduced below 310 °C. Crystalline RuxSny structures with variable composition, which seem to be the active component of the selective hydrogenation catalyst, were found to be formed after the reaction at temperatures higher than 300 °C. Our work demonstarted that a scheme of oleic acid transformations includes formation of waxes by recombination of carboxyl and alkanes intermediates, acid decarboxylation and hydrocracking of waxes to alkanes. Mathematic simulation methods allowed us to estimate rate constants of the process stages and the main kinetic parameters (Ea, k0).
KW - Fatty acids
KW - Hydrogenation
KW - Oleyl alcohol
KW - Ruthenium-tin catalyst
KW - Unsaturated alcohols
KW - NOBLE-METAL CATALYSTS
KW - ALPHA,BETA-UNSATURATED ALDEHYDES
KW - UNSATURATED ALCOHOLS
KW - OPERATING-CONDITIONS
KW - RUTHENIUM CATALYSTS
KW - SN CATALYSTS
KW - METHYL OLEATE
KW - RU-SN
KW - MULTIPHASE HYDROGENATION
KW - TIN BORIDE CATALYSTS
UR - http://www.scopus.com/inward/record.url?scp=85015930674&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2017.03.012
DO - 10.1016/j.apcatb.2017.03.012
M3 - Article
AN - SCOPUS:85015930674
VL - 209
SP - 611
EP - 620
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
ER -
ID: 10271330