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Nickel‐containing ceria‐zirconia doped with Ti and Nb. Effect of support composition and preparation method on catalytic activity in methane dry reforming. / Simonov, Mikhail; Bespalko, Yulia; Smal, Ekaterina et al.

In: Nanomaterials, Vol. 10, No. 7, 1281, 07.2020, p. 1-19.

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Simonov M, Bespalko Y, Smal E, Valeev K, Fedorova V, Krieger T et al. Nickel‐containing ceria‐zirconia doped with Ti and Nb. Effect of support composition and preparation method on catalytic activity in methane dry reforming. Nanomaterials. 2020 Jul;10(7):1-19. 1281. doi: 10.3390/nano10071281

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@article{1af97c9a8c3f480493efca72a631ad24,
title = "Nickel‐containing ceria‐zirconia doped with Ti and Nb. Effect of support composition and preparation method on catalytic activity in methane dry reforming",
abstract = "Nickel‐containing mixed ceria‐zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria‐zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single‐phased. XRD data, Raman, and UV‐Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors.",
keywords = "Fluorite, Heterogeneous catalysis, Methane dry reforming, Supercritical synthesis",
author = "Mikhail Simonov and Yulia Bespalko and Ekaterina Smal and Konstantin Valeev and Valeria Fedorova and Tamara Krieger and Vladislav Sadykov",
year = "2020",
month = jul,
doi = "10.3390/nano10071281",
language = "English",
volume = "10",
pages = "1--19",
journal = "Nanomaterials",
issn = "2079-4991",
publisher = "MDPI AG",
number = "7",

}

RIS

TY - JOUR

T1 - Nickel‐containing ceria‐zirconia doped with Ti and Nb. Effect of support composition and preparation method on catalytic activity in methane dry reforming

AU - Simonov, Mikhail

AU - Bespalko, Yulia

AU - Smal, Ekaterina

AU - Valeev, Konstantin

AU - Fedorova, Valeria

AU - Krieger, Tamara

AU - Sadykov, Vladislav

PY - 2020/7

Y1 - 2020/7

N2 - Nickel‐containing mixed ceria‐zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria‐zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single‐phased. XRD data, Raman, and UV‐Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors.

AB - Nickel‐containing mixed ceria‐zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria‐zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single‐phased. XRD data, Raman, and UV‐Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors.

KW - Fluorite

KW - Heterogeneous catalysis

KW - Methane dry reforming

KW - Supercritical synthesis

UR - http://www.scopus.com/inward/record.url?scp=85087372327&partnerID=8YFLogxK

U2 - 10.3390/nano10071281

DO - 10.3390/nano10071281

M3 - Article

C2 - 32629866

AN - SCOPUS:85087372327

VL - 10

SP - 1

EP - 19

JO - Nanomaterials

JF - Nanomaterials

SN - 2079-4991

IS - 7

M1 - 1281

ER -

ID: 24721030