Synthesis of Nanomaterials in a Coaxial Flame
The paper presents the results of experimental studies of the synthesis of fullerenes C60 in a coaxial flame of benzene and acetylene at low pressures; of the synthesis of graphene in a coaxial flame of ethanol and propane, benzene, and acetylene; of the soot formation process in the coaxial flame o...
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| Format: | Article |
| Language: | English |
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al-Farabi Kazakh National University
2020-09-01
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| Series: | Eurasian Chemico-Technological Journal |
| Subjects: | |
| Online Access: | https://ect-journal.kz/index.php/ectj/article/view/977 |
| _version_ | 1818643307064983552 |
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| author | B. Т. Lesbayev |
| author_facet | B. Т. Lesbayev |
| author_sort | B. Т. Lesbayev |
| collection | DOAJ |
| description | The paper presents the results of experimental studies of the synthesis of fullerenes C60 in a coaxial flame of benzene and acetylene at low pressures; of the synthesis of graphene in a coaxial flame of ethanol and propane, benzene, and acetylene; of the soot formation process in the coaxial flame of propane and ethanol. It has been established that the optimum temperature of a coaxial flame for the formation of fullerenes C60 is 970‒1000 °C with the carbon to oxygen ratio in the internal benzene-oxygen flame C/O ≈ 0.9 ÷ 1. The C/O ratio in an external acetylene-oxygen flame was maintained at a stoichiometric ratio. It was found that the preliminary (before feeding into the burner) treatment of the benzene-oxygen mixture using ultraviolet (UV) radiation with a wavelength of 254 nm promotes an increase in the yield of fullerenes. The synthesis conditions were optimized for: 5‒10 layers graphene in a coaxial flame of acetylene and ethanol; graphene containing more than 10 layers in a coaxial flame of propane and ethanol; one and two-layer graphene in a coaxial flame of ethanol and benzene. The possibility of a significant reduction of the formation of soot particles in the diffusion flame of propane by organizing its coaxial combustion with ethanol is shown. |
| first_indexed | 2024-12-16T23:56:52Z |
| format | Article |
| id | doaj.art-754f0661415641cd8273731c46218482 |
| institution | Directory Open Access Journal |
| issn | 1562-3920 2522-4867 |
| language | English |
| last_indexed | 2024-12-16T23:56:52Z |
| publishDate | 2020-09-01 |
| publisher | al-Farabi Kazakh National University |
| record_format | Article |
| series | Eurasian Chemico-Technological Journal |
| spelling | doaj.art-754f0661415641cd8273731c462184822022-12-21T22:11:12Zengal-Farabi Kazakh National UniversityEurasian Chemico-Technological Journal1562-39202522-48672020-09-0122310.18321/ectj977Synthesis of Nanomaterials in a Coaxial FlameB. Т. Lesbayev0Institute of Combustion Problems, 172 Bogenbai Batyr St., 050012, Almaty, Kazakhstan; al-Farabi Kazakh National University, 71 al-Farabi Ave., 050040, Almaty, KazakhstanThe paper presents the results of experimental studies of the synthesis of fullerenes C60 in a coaxial flame of benzene and acetylene at low pressures; of the synthesis of graphene in a coaxial flame of ethanol and propane, benzene, and acetylene; of the soot formation process in the coaxial flame of propane and ethanol. It has been established that the optimum temperature of a coaxial flame for the formation of fullerenes C60 is 970‒1000 °C with the carbon to oxygen ratio in the internal benzene-oxygen flame C/O ≈ 0.9 ÷ 1. The C/O ratio in an external acetylene-oxygen flame was maintained at a stoichiometric ratio. It was found that the preliminary (before feeding into the burner) treatment of the benzene-oxygen mixture using ultraviolet (UV) radiation with a wavelength of 254 nm promotes an increase in the yield of fullerenes. The synthesis conditions were optimized for: 5‒10 layers graphene in a coaxial flame of acetylene and ethanol; graphene containing more than 10 layers in a coaxial flame of propane and ethanol; one and two-layer graphene in a coaxial flame of ethanol and benzene. The possibility of a significant reduction of the formation of soot particles in the diffusion flame of propane by organizing its coaxial combustion with ethanol is shown.https://ect-journal.kz/index.php/ectj/article/view/977Coaxial flameGrapheneFullereneSoot formationEthanol flame |
| spellingShingle | B. Т. Lesbayev Synthesis of Nanomaterials in a Coaxial Flame Eurasian Chemico-Technological Journal Coaxial flame Graphene Fullerene Soot formation Ethanol flame |
| title | Synthesis of Nanomaterials in a Coaxial Flame |
| title_full | Synthesis of Nanomaterials in a Coaxial Flame |
| title_fullStr | Synthesis of Nanomaterials in a Coaxial Flame |
| title_full_unstemmed | Synthesis of Nanomaterials in a Coaxial Flame |
| title_short | Synthesis of Nanomaterials in a Coaxial Flame |
| title_sort | synthesis of nanomaterials in a coaxial flame |
| topic | Coaxial flame Graphene Fullerene Soot formation Ethanol flame |
| url | https://ect-journal.kz/index.php/ectj/article/view/977 |
| work_keys_str_mv | AT btlesbayev synthesisofnanomaterialsinacoaxialflame |