Ceria–Zirconia-Supported Ruthenium Catalysts for Hydrogen Production by Ammonia Decomposition

Ceria–Zirconia-Supported Ruthenium Catalysts for Hydrogen Production by Ammonia Decomposition Full article

Journal

Energies
ISSN: 1996-1073

Output data

Year: 2023, Volume: 16, Number: 4, Article number : 1743, Pages count : 1 DOI: 10.3390/en16041743

Tags

ammonia decomposition; commercial supports; cerium–zirconium oxide; ruthenium; Temkin–Pyzhov kinetics

Authors

Borisov Vadim A. ¹ , Fedorova Zaliya A. ² , Temerev Victor L. ¹ , Trenikhin Mikhail V. ¹ , Svintsitskiy Dmitry A. ² , Muromtsev Ivan V. ¹ , Arbuzov Alexey B. ¹ , Shigarov Alexey B. ² , Snytnikov Pavel V. ² , Shlyapin Dmitry A. ¹

Affiliations

1	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis SB RAS, Neftezavodskaya St., 54, 644040 Omsk, Russia
2	Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

0239-2021-0011

Commercial cerium–zirconium oxide supports (Ce0.5Zr0.5O2, Ce0.75Zr0.25O2, and Ce0.4Zr0.5Y0.05La0.05O2) were used to prepare Ru/CeZrOx catalysts. According to the XRD and IR spectroscopy data, the supports consist of ceria-based substitutional solid solutions. The specific surface areas of supports and catalysts are similar and range from 71–89 m2/g. As shown by TEM and XRD methods, the size of support particles equals 6–11 nm. According to the TEM data, the size of ruthenium particles does not exceed 1.3 nm. The catalyst activity in the ammonia decomposition process was studied. The Ru/Ce0.75Zr0.25O2 catalyst at temperature 500 °C and GHSV 120,000 h−1 demonstrated the highest hydrogen productivity of 53.3 mmol H2/(gcat·min) and compares well with the best results reported in the literature. The kinetics of ammonia decomposition reaction were calculated using the Temkin–Pyzhov exponential expression. The developed mathematical model well described the experimental data. The studied catalysts demonstrated high activity for the ammonia decomposition reaction.

Borisov V.A. , Fedorova Z.A. , Temerev V.L. , Trenikhin M.V. , Svintsitskiy D.A. , Muromtsev I.V. , Arbuzov A.B. , Shigarov A.B. , Snytnikov P.V. , Shlyapin D.A.
Ceria–Zirconia-Supported Ruthenium Catalysts for Hydrogen Production by Ammonia Decomposition
Energies. 2023. V.16. N4. 1743 :1-1. DOI: 10.3390/en16041743 WOS Scopus РИНЦ OpenAlex

Submitted:	Dec 30, 2022
Accepted:	Feb 3, 2023
Published print:	Feb 9, 2023
Published online:	Feb 9, 2023

Web of science:	WOS:000945133900001
Scopus:	2-s2.0-85149171672
Elibrary:	53962429
OpenAlex:	W4319983720

DB	Citing
Web of science	2
OpenAlex	5
Scopus	4