TY - JOUR

T1 - Nickel-Based Ni–Ce1–xZrxO2 Catalysts Prepared by the Pechini Method for CO2 Methanation

AU - Pakharukova, V. P.

AU - Stonkus, O. A.

AU - Kharchenko, N. A.

AU - Rogozhnikov, V. N.

AU - Chesalov, Yu A.

AU - Gorlova, A. M.

AU - Saraev, A. A.

AU - Potemkin, D. I.

N1 - This study was supported by the Russian Science Foundation (grant no. 21-73-20075). The electron microscopy and X-ray photoelectron spectroscopy studies were performed using the equipment of the Multiaccess Center “National Center for the Study of Catalysts.” We also used the equipment of the Siberian Synchrotron and Terahertz Radiation Center (SSTRC) based on the “VEPP-4–VEPP-2000 Complex” unit at the Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences. Публикация для корректировки.

PY - 2023/10

Y1 - 2023/10

N2 - Nickel-based Ni–Ce1 –xZrxO2 catalysts were prepared by the Pechini method. The catalyst performance in the CO2 methanation reaction was studied. The catalysts exhibit high catalytic activity comparable to that of the commercial NIAP-07-05 catalyst of methanation. The catalysts were characterized by X‑ray diffraction methods with experiments using synchrotron radiation, and also by high-resolution electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. The method for the preparation makes it possible to obtain fine nickel-containing particles formed during the decomposition of the Ni–Ce–Zr–O substitution solid solution obtained during the synthesis. Because of the decorating effect, however, the surface of nickel-containing particles is poorly accessible to reagents. For this reason, the Ni–Ce1 –xZrxO2 catalysts obtained by the Pechini method are less active than supported Ni/Ce1 –xZrxO2 catalysts.

AB - Nickel-based Ni–Ce1 –xZrxO2 catalysts were prepared by the Pechini method. The catalyst performance in the CO2 methanation reaction was studied. The catalysts exhibit high catalytic activity comparable to that of the commercial NIAP-07-05 catalyst of methanation. The catalysts were characterized by X‑ray diffraction methods with experiments using synchrotron radiation, and also by high-resolution electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. The method for the preparation makes it possible to obtain fine nickel-containing particles formed during the decomposition of the Ni–Ce–Zr–O substitution solid solution obtained during the synthesis. Because of the decorating effect, however, the surface of nickel-containing particles is poorly accessible to reagents. For this reason, the Ni–Ce1 –xZrxO2 catalysts obtained by the Pechini method are less active than supported Ni/Ce1 –xZrxO2 catalysts.

KW - CO2 methanation

KW - atomic pair distribution function analysis

KW - cerium–zirconium oxide

KW - electron microscopy

KW - nickel-based catalyst

KW - synchrotron radiation

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85173745872&origin=inward&txGid=00d274e62d91d5871f330fd9553a0d6e

UR - https://www.mendeley.com/catalogue/bc03f5c4-b83c-3d73-bb1d-8ffbbff2e17c/

U2 - 10.1134/S0023158423050063

DO - 10.1134/S0023158423050063

M3 - Article

VL - 64

SP - 671

EP - 682

JO - Kinetics and Catalysis

JF - Kinetics and Catalysis

SN - 0023-1584

IS - 5

ER -