TY - JOUR

T1 - Highly dispersed Rh-, Pt-, Ru/Ce0.75Zr0.25O2–δ catalysts prepared by sorption-hydrolytic deposition for diesel fuel reforming to syngas

AU - Shoynkhorova, T. B.

AU - Simonov, P. A.

AU - Potemkin, D. I.

AU - Snytnikov, P. V.

AU - Belyaev, V. D.

AU - Ishchenko, A. V.

AU - Svintsitskiy, D. A.

AU - Sobyanin, V. A.

N1 - Funding Information: The authors appreciate the financial support from the Ministry of Education and Science of the Russian Federation , project No 14.607.21.0149, Unique Identification Number RFMEFI60716X0149. Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/12/5

Y1 - 2018/12/5

N2 - Three noble metal catalysts (Rh-, Pt-, Ru/Ce0.75Zr0.25O2–δ) for reforming of hydrocarbons were studied in steam and autothermal process conditions. Each catalyst was prepared by sorption-hydrolytic deposition with a metal loading of 0.1 mmol/g. The main idea of this technical approach was to form a solution of “metal complex + alkaline agent” that was metastable at given conditions (temperature, concentrations) with respect to homogeneous metal hydroxide precipitation, due to the kinetic inertness of the metal complexes for ligand exchange. As the support surface accelerated heterogeneous nucleation and growth of metal hydroxide particles, addition of the support to the reagent mixture initiated the hydrolysis which led to uniform depositing of 1–2 nm metal particles over the support surface. The Rh-based catalyst synthesized surpassed the Ru- and Pt-based catalysts in activity and stability in that under the experimental conditions, complete n-hexadecane conversion and equilibrium reformate product distribution were observed for 1-wt. % Rh/Ce0.75Zr0.25O2–δ for 17 h. This catalyst also showed competitive performance in autothermal reforming of diesel fuel providing stable operation for 9 h.

AB - Three noble metal catalysts (Rh-, Pt-, Ru/Ce0.75Zr0.25O2–δ) for reforming of hydrocarbons were studied in steam and autothermal process conditions. Each catalyst was prepared by sorption-hydrolytic deposition with a metal loading of 0.1 mmol/g. The main idea of this technical approach was to form a solution of “metal complex + alkaline agent” that was metastable at given conditions (temperature, concentrations) with respect to homogeneous metal hydroxide precipitation, due to the kinetic inertness of the metal complexes for ligand exchange. As the support surface accelerated heterogeneous nucleation and growth of metal hydroxide particles, addition of the support to the reagent mixture initiated the hydrolysis which led to uniform depositing of 1–2 nm metal particles over the support surface. The Rh-based catalyst synthesized surpassed the Ru- and Pt-based catalysts in activity and stability in that under the experimental conditions, complete n-hexadecane conversion and equilibrium reformate product distribution were observed for 1-wt. % Rh/Ce0.75Zr0.25O2–δ for 17 h. This catalyst also showed competitive performance in autothermal reforming of diesel fuel providing stable operation for 9 h.

KW - Ceria-zirconia

KW - Diesel autothermal reforming

KW - Hydrogen-rich stream

KW - Rhodium catalysts

KW - Steam conversion of hexadecane

KW - Syngas

KW - HYDROCARBONS

KW - STEAM

KW - HYDROGEN-PRODUCTION

KW - PARTIAL OXIDATION

KW - CO

KW - ALUMINA

UR - http://www.scopus.com/inward/record.url?scp=85048026783&partnerID=8YFLogxK

U2 - 10.1016/j.apcatb.2018.06.003

DO - 10.1016/j.apcatb.2018.06.003

M3 - Article

AN - SCOPUS:85048026783

VL - 237

SP - 237

EP - 244

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

ER -