Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
XAS study of Mo-based dispersed catalysts for upgrading of heavy oil. / Saraev, A. A.; Zaikina, O. O.; Sosnin, G. A. и др.
в: Radiation Physics and Chemistry, Том 175, 108335, 10.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - XAS study of Mo-based dispersed catalysts for upgrading of heavy oil
AU - Saraev, A. A.
AU - Zaikina, O. O.
AU - Sosnin, G. A.
AU - Yeletsky, P. M.
AU - Tsapina, A. M.
AU - Zubavichus, Y. V.
AU - Yakovlev, V. A.
AU - Kaichev, V. V.
PY - 2020/10
Y1 - 2020/10
N2 - Results of X-ray absorption spectroscopy study of Mo-based dispersed catalysts in the coke residue after catalytic steam cracking, catalytic cracking in the absence of water, and hydrocracking processes are reported. It was found that the catalyst precursor (ammonium heptamolybdate) is transformed to three different forms with the different ratios: MoO3, MoO2, and MoS2. After the catalytic steam cracking, the catalyst contains mainly MoO2 (∼74%), whereas after hydrocracking, the prevalent form is MoS2 (∼75%). The precursor after water-free catalytic cracking is transformed into 37% MoO2 and 63% MoS2. The catalyst genesis scheme in the processing of heavy oil was suggested, taking into account that reaction media affect the active phase formation, resulting in different composition and properties of products.
AB - Results of X-ray absorption spectroscopy study of Mo-based dispersed catalysts in the coke residue after catalytic steam cracking, catalytic cracking in the absence of water, and hydrocracking processes are reported. It was found that the catalyst precursor (ammonium heptamolybdate) is transformed to three different forms with the different ratios: MoO3, MoO2, and MoS2. After the catalytic steam cracking, the catalyst contains mainly MoO2 (∼74%), whereas after hydrocracking, the prevalent form is MoS2 (∼75%). The precursor after water-free catalytic cracking is transformed into 37% MoO2 and 63% MoS2. The catalyst genesis scheme in the processing of heavy oil was suggested, taking into account that reaction media affect the active phase formation, resulting in different composition and properties of products.
KW - Catalytic cracking
KW - Catalytic steam cracking
KW - EXAFS
KW - Heavy oil
KW - Hydrocracking
KW - Molybdenum oxide
KW - Molybdenum sulfide
KW - XANES
UR - http://www.scopus.com/inward/record.url?scp=85074611214&partnerID=8YFLogxK
U2 - 10.1016/j.radphyschem.2019.05.025
DO - 10.1016/j.radphyschem.2019.05.025
M3 - Article
AN - SCOPUS:85074611214
VL - 175
JO - Radiation Physics and Chemistry
JF - Radiation Physics and Chemistry
SN - 0969-806X
M1 - 108335
ER -
ID: 23906776