Solvent-Free Dehydrogenation of Decahydroquinoline over Palladium Nanoparticles Supported on Modified Ceria-Based Structures

Solvent-Free Dehydrogenation of Decahydroquinoline over Palladium Nanoparticles Supported on Modified Ceria-Based Structures Full article

Journal

Catalysts
ISSN: 2073-4344

Output data

Year: 2026, Volume: 16, Number: 9, Article number : 835, Pages count : DOI: 10.3390/catal16090835

Authors

Kirichenko Olga ¹ , Shuvalova Elena ¹ , Redina Elena ¹ , Ivanova Inna ¹ , Kapustin Gennady ¹ , Kustov Leonid ^2,1

Affiliations

1	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
2	Chemistry Department, Moscow State University, Leninskie Gory 1, bldg. 3, 119992 Moscow, Russia

Hydrogen storage and transportation technologies based on liquid organic hydrogen carriers (LOHCs) are of high research interest. The next generation of LOHCs with a higher hydrogen capacity and lower dehydrogenation temperature is required, and the decahydroquinoline/quinoline (DHQ/Q) system is among promising LOHCs. The catalysts comprising palladium nanoparticles supported on the synthesized high-surface area materials (CeO2, CeO2-ZrO2 mixed oxide, and Ce0.75Zr0.25O2), as well as reverse CeO2/Pd/oxide catalysts were tested in solvent-free dehydrogenation of DHQ at a high DHQ:Pd molar ratio, with DHQ being investigated as a hydrogen-storage source. The oxide-supported Pd nanoparticles were synthesized via the deposition–precipitation of Pd poly-hydroxo complexes, while a redox method was used to prepare the reverse catalysts. The highest hydrogen yields of 45% and 55% with the DHQ conversions of 61% and 76% at molar ratios DHQ:Pd of 1000 and 500, respectively, have been reached over the Pd/Ce0.75Zr0.25O2 catalyst at 220 °C, which results in hydrogen production exceeding that of other known catalysts studied in solvent-free DHQ dehydrogenation. The challenges and prospects for further catalyst development are discussed.

Kirichenko O. , Shuvalova E. , Redina E. , Ivanova I. , Kapustin G. , Kustov L.
Solvent-Free Dehydrogenation of Decahydroquinoline over Palladium Nanoparticles Supported on Modified Ceria-Based Structures
Catalysts. 2026. V.16. N9. 835 . DOI: 10.3390/catal16090835 OpenAlex

Submitted:	Aug 27, 2026
Published online:	Sep 17, 2026

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