Evidence for the Cumulene Cyclo[n]carbon Formation in a Compression Reactor During the Pyrolysis of Acetylene in Neon Atmosphere | Sciact - CRIS-system of Boreskov Institute of Catalysis

Evidence for the Cumulene Cyclo[n]carbon Formation in a Compression Reactor During the Pyrolysis of Acetylene in Neon Atmosphere Full article

Journal

Fullerenes Nanotubes and Carbon Nanostructures
ISSN: 1536-383X , E-ISSN: 1536-4046

Output data

Year: 2025, DOI: 10.1080/1536383x.2024.2447350

Tags

Carbon nanoparticles; hydrocarbon pyrolysis; cyclo[n]carbon; ring carbon structures; carbyne; fullerenes

Authors

Vasiljev Sergei ¹ , Ezdin Boris ¹ , Shabiev Farid ^2,3 , Pakharukov Yuri ³ , Kalyada Valery ¹ , Mavrinsky Viktor ⁴ , Shklyaev Aleksandr ^1,5 , Yanshole Vadim ⁶ , Ishchenko Arkadiy ⁷

Affiliations

1	Department of Applied Physics, Faculty of Physics, Novosibirsk State University, Novosibirsk, Russia
2	Department of Applied and Technical Physics, Tyumen State University, Tyumen, Russia
3	Department of Physics and Instrumentation, Tyumen Industrial University, Tyumen, Russia
4	Department of Physics, Magnitogorsk State Technical University, Magnitogorsk, Russia
5	Rzhanov Institute of Semiconductor Physics SB RAS, Novosibirsk, Russia
6	Institute "International Tomographic Center" SB RAS, Novosibirsk, Russia
7	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

Funding (2)

1	Russian Science Foundation	19-72-30023
2	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0032

The article is dedicated to the experimental study of ultra-small carbon particles, containing from several to several tens of carbon atoms. In the absence of sufficient experimental data in this area, the theoretical notion considers carbon polyene structures as of flat rings with alternating triple and single bonds between carbon atoms and an even number of carbon atoms in ring structures as being the more favorable energy-wise. However, currently reliable evidence of the true structure of carbon rings that can occur naturally is lacking. Here, we show that the carbon nanoparticle synthesis by pyrolysis of gaseous hydrocarbons in a cyclic piston-cylinder compression reactor produces carbon rings with double bonds between carbon atoms, i.e. with a cumulene structure, contrary to the current theoretical notion. We believe that the cumulene structures are more favorable energy-wise due to the specific shape of carbon rings, which appear as a Grover washer or a helix turn. Our results are corroborated by MALDI-TOF mass spectrometry, IR spectroscopy, and high-resolution transmission electron microscopy of the samples obtained, as well as by density functional theory calculations. We believe that our work will bring more clarity to the issues surrounding the formation of carbon particles of the smallest sizes.

Vasiljev S. , Ezdin B. , Shabiev F. , Pakharukov Y. , Kalyada V. , Mavrinsky V. , Shklyaev A. , Yanshole V. , Ishchenko A.
Evidence for the Cumulene Cyclo[n]carbon Formation in a Compression Reactor During the Pyrolysis of Acetylene in Neon Atmosphere
Fullerenes Nanotubes and Carbon Nanostructures. 2025. DOI: 10.1080/1536383x.2024.2447350 WOS Scopus OpenAlex

Submitted:	Oct 9, 2024
Accepted:	Dec 20, 2024
Published online:	Jan 10, 2025

Web of science:	WOS:001394195200001
Scopus:	2-s2.0-85214456952
OpenAlex:	W4406249233

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