Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Deoxygenation of esters over sulfur-free Ni–W/Al2O3 catalysts for production of biofuel components. / Kukushkin, R. G.; Yeletsky, P. M.; Grassin, C. T. и др.
в: Chemical Engineering Journal, Том 396, 125202, 15.09.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Deoxygenation of esters over sulfur-free Ni–W/Al2O3 catalysts for production of biofuel components
AU - Kukushkin, R. G.
AU - Yeletsky, P. M.
AU - Grassin, C. T.
AU - Chen, B. H.
AU - Bulavchenko, O. A.
AU - Saraev, A. A.
AU - Yakovlev, V. A.
PY - 2020/9/15
Y1 - 2020/9/15
N2 - Sulfur-free Ni–W/Al2O3 catalysts synthesized through incipient wetness impregnation technique were investigated in deoxygenation of methyl palmitate and ethyl caprate blend at 300 °C and P = 1 MPa (PH2 = 0.25 MPa) in a fixed-bed continuous flow reactor. Modification of Ni/Al2O3 catalysts by W (0.4–4.4 wt%) was found to give rise to higher both conversions of the feedstock and deoxygenation degree. In addition, this also resulted in a change in the selectivity of deoxygenation towards alkanes formed via direct hydrodeoxygenation route, compared to alkanes formed through decarboxylation/decarbonylation. Selectivity by alkanes with carbon chain length equal to those of an initial fatty acid formed via hydrodeoxygenation was found to increase with W content increasing. The synthesized catalysts were investigated by XRD, XPS, TEM, BET and H2-TPR techniques. According to XPS study of the reduced samples, tungsten was in 6+ oxidation state on the sample surface and W6+ content increased in the near-surface layer of samples with tungsten content increasing in catalysts.
AB - Sulfur-free Ni–W/Al2O3 catalysts synthesized through incipient wetness impregnation technique were investigated in deoxygenation of methyl palmitate and ethyl caprate blend at 300 °C and P = 1 MPa (PH2 = 0.25 MPa) in a fixed-bed continuous flow reactor. Modification of Ni/Al2O3 catalysts by W (0.4–4.4 wt%) was found to give rise to higher both conversions of the feedstock and deoxygenation degree. In addition, this also resulted in a change in the selectivity of deoxygenation towards alkanes formed via direct hydrodeoxygenation route, compared to alkanes formed through decarboxylation/decarbonylation. Selectivity by alkanes with carbon chain length equal to those of an initial fatty acid formed via hydrodeoxygenation was found to increase with W content increasing. The synthesized catalysts were investigated by XRD, XPS, TEM, BET and H2-TPR techniques. According to XPS study of the reduced samples, tungsten was in 6+ oxidation state on the sample surface and W6+ content increased in the near-surface layer of samples with tungsten content increasing in catalysts.
KW - Deoxygenation
KW - Green diesel
KW - Nickel
KW - Tungsten
KW - Vegetable oil
KW - GREEN DIESEL
KW - HYDROGENATION
KW - OXIDE
KW - ACID
KW - RAY PHOTOEMISSION-SPECTROSCOPY
KW - NATURAL TRIGLYCERIDES
KW - VEGETABLE-OILS
KW - NICKEL
KW - HYDRODEOXYGENATION
KW - REDUCTION
UR - http://www.scopus.com/inward/record.url?scp=85085097318&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2020.125202
DO - 10.1016/j.cej.2020.125202
M3 - Article
AN - SCOPUS:85085097318
VL - 396
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 125202
ER -
ID: 24389355