TY - JOUR

T1 - Efficient and stable to coking catalysts of ethanol steam reforming comprised of Ni + Ru loaded on MgAl2O4 + LnFe0.7Ni0.3O3 (Ln = La, Pr) nanocomposites prepared via cost-effective procedure with Pluronic P123 copolymer

AU - Massalimova, Bakytgul

AU - Sadykov, Vladislav

AU - Totenova, Nurzada

AU - Fedorova, Julia

AU - Glazneva, Tatyana

AU - Krieger, Tamara

AU - Ishchenko, Arkady

AU - Rogov, Vladimir

N1 - Сведения о финансировании Ministry of Education and Science of the Russian Federation 075-12-2021-697

PY - 2024/12/11

Y1 - 2024/12/11

N2 - Mesoporous MgAl2O4 + LnFe0.7Ni0.3O3 (Ln = La, Pr) nanocomposites were prepared by a cost-effective one-pot procedure with the Pluronic P123 copolymer and Ni + Ru active components were supported on them by wet impregnation. The real structure of samples was studied by X-ray diffraction and transmission electron microscopy with energy-dispersive X-ray spectroscopy, surface properties were determined by Fourier transform infrared spectroscopy of adsorbed CO, reactivity was evaluated by temperature programmed reduction by H2, and catalytic activity was tested in ethanol steam reforming (ESR). Disordering of the real structure of nanocomposite supports due to incorporation of transition metal cations into MgAl2O4 results in the development of a metal-support interface and domination of single surface metal centers. This provides a high catalytic activity in the ESR reaction in the intermediate temperature range ∼550°C, close to that of the best known catalysts, and stability to coking. A higher activity for the Pr-containing catalyst is provided by the high reactivity of surface oxygen species bound with Pr cations.

AB - Mesoporous MgAl2O4 + LnFe0.7Ni0.3O3 (Ln = La, Pr) nanocomposites were prepared by a cost-effective one-pot procedure with the Pluronic P123 copolymer and Ni + Ru active components were supported on them by wet impregnation. The real structure of samples was studied by X-ray diffraction and transmission electron microscopy with energy-dispersive X-ray spectroscopy, surface properties were determined by Fourier transform infrared spectroscopy of adsorbed CO, reactivity was evaluated by temperature programmed reduction by H2, and catalytic activity was tested in ethanol steam reforming (ESR). Disordering of the real structure of nanocomposite supports due to incorporation of transition metal cations into MgAl2O4 results in the development of a metal-support interface and domination of single surface metal centers. This provides a high catalytic activity in the ESR reaction in the intermediate temperature range ∼550°C, close to that of the best known catalysts, and stability to coking. A higher activity for the Pr-containing catalyst is provided by the high reactivity of surface oxygen species bound with Pr cations.

KW - FTIRS of adsorbed CO

KW - ethanol steam reforming

KW - nanocomposite spinel + perovskite supports + Ni + Ru

KW - one-pot synthesis with the Pluronic P123 copolymer

KW - surface sites

UR - https://www.mendeley.com/catalogue/c3a8981d-eca2-3b41-9ed1-c8e6f0d001f0/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85213723047&origin=inward&txGid=0bf79dbd333b432d1485b8abd5c8acfd

U2 - 10.1515/chem-2024-0118

DO - 10.1515/chem-2024-0118

M3 - Article

VL - 22

JO - Open Chemistry

JF - Open Chemistry

SN - 2391-5420

IS - 1

ER -