Synthesis of Carbon Nanoparticles in a Compression Reactor in Atmosphere of Buffer Gases Full article
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Technical Physics
ISSN: 1063-7842 , E-ISSN: 1090-6525 |
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| Output data | Year: 2023, Volume: 68, Number: 1, Pages: 18-26 Pages count : 9 DOI: 10.1134/s1063784223010024 | ||||||||
| Tags | cyclic chemical reactor; adiabatic compression; pyrolysis of hydrocarbons; carbon nanomaterials; buffer gas | ||||||||
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 075-15-2020-797 (13.1902.21.0024) |
Abstract:
Physicochemical aspects of the gas-phase synthesis of nanopowders using a cyclic compression reactor are considered. Precursors (methane, ethylene, and acetylene) are compressed under conditions close to adiabatic ones in atmosphere of buffer monatomic gases (argon, helium, and neon). The effect of the pressure in the reactor and precursor/buffer gas volumetric ratio on the composition, morphology, and structure of carbon-containing particles (pyrolysis products) is studied. Complete pyrolysis is observed for all precursors but under different conditions. Thermal decomposition of methane, having the minimum enthalpy of formation, is observed in atmosphere with an argon content of 97.5% at a peak pressure of greater than 10 MPa. Helium shows limited possibilities for thermal relaxation under the conditions for fast reactions (<50 ms): only acetylene, having the maximum enthalpy of formation, is decomposed in the helium atmosphere. The solid reaction products represent black powders with a bulk density of 20–30 mg/cm3. The powders are studied using transmission and scanning electron microscopy, Raman scattering, and X-ray diffraction analysis. The particles represent either hollow or filled globular bulbous structures with a size of up to 100 nm. The X-ray diffraction analysis shows the presence of graphite-like crystallites with sizes of less than 10 nm in all samples. Raman analysis yields predominantly sp2 hybridization of carbon. The cyclic compression method provides wide opportunities for the pyrolysis of hydrocarbons aiming at the production of various carbon structures, which enables for the fine tuning in terms of the yield of carbon nanomaterials of the required morphology for practical use.
Cite:
Ezdin B.
, Vasiljev S.
, Yatsenko D.
, Fedorov V.
, Ivanova M.
, Kalyada V.
, Pakharukov Y.
, Shabiev F.
, Zarvin A.
Synthesis of Carbon Nanoparticles in a Compression Reactor in Atmosphere of Buffer Gases
Technical Physics. 2023. V.68. N1. P.18-26. DOI: 10.1134/s1063784223010024 WOS Scopus РИНЦ ANCAN OpenAlex
Synthesis of Carbon Nanoparticles in a Compression Reactor in Atmosphere of Buffer Gases
Technical Physics. 2023. V.68. N1. P.18-26. DOI: 10.1134/s1063784223010024 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Ездин Б.С.
, Васильев С.А.
, Яценко Д.А.
, Федоров В.Е.
, Иванова М.Н.
, Каляда В.В.
, Пахаруков Ю.В.
, Фарид Канафеович Ш.
, Зарвин А.Е.
Синтез углеродных наночастиц в реакторе сжатия в атмосфере буферных газов
Сибирский физический журнал. 2022. Т.17. №3. С.29-46. DOI: 10.25205/2541-9447-2022-17-3-29-46 РИНЦ OpenAlex
Синтез углеродных наночастиц в реакторе сжатия в атмосфере буферных газов
Сибирский физический журнал. 2022. Т.17. №3. С.29-46. DOI: 10.25205/2541-9447-2022-17-3-29-46 РИНЦ OpenAlex
Dates:
| Submitted: | Apr 29, 2022 |
| Accepted: | Sep 13, 2022 |
| Published print: | Jan 1, 2023 |
| Published online: | Jun 10, 2023 |
Identifiers:
| Web of science: | WOS:001004130200002 |
| Scopus: | 2-s2.0-85161360204 |
| Elibrary: | 54384087 |
| Chemical Abstracts: | 2023:1202261 |
| Chemical Abstracts (print): | 183:215779 |
| OpenAlex: | W4380154049 |