Каталітична переробка хлорорганічних відходів у цінні мономери
The paper is devoted to experimental development of method for 1,1,2-trichlorethane (TCE) dehydrochlorination (DHC). The economic and environmental issues of organic chlorinated compounds processing are described. The basic principle and possible products of TCE processing are presented. The DHC of...
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| Дата: | 2021 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine
2021
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| Онлайн доступ: | https://kataliz.org.ua/index.php/journal/article/view/7 |
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| Назва журналу: | Catalysis and petrochemistry |
Репозитарії
Catalysis and petrochemistry| _version_ | 1859471923335921664 |
|---|---|
| author | Stepasiuk, B. Haievska, T. Spaska, O. Bilokopytov, Yu. Boichenko, S. Yakovlieva, A. |
| author_facet | Stepasiuk, B. Haievska, T. Spaska, O. Bilokopytov, Yu. Boichenko, S. Yakovlieva, A. |
| author_sort | Stepasiuk, B. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2021-12-10T12:35:04Z |
| description | The paper is devoted to experimental development of method for 1,1,2-trichlorethane (TCE) dehydrochlorination (DHC). The economic and environmental issues of organic chlorinated compounds processing are described. The basic principle and possible products of TCE processing are presented. The DHC of TCE, which is one of the chlorinated organic wastes produced in the ethylene dichloride process, to vinylidene chloride (VDC) was carried out over CaO, MgO supported on SiO2 and modified with CsCl catalysts. This process was carried out in a continuous flow fixed-bed reactor. The prepared catalysts were characterized by surface area and base properties before/after reaction. The methodology for determining properties of catalyst is described. Laboratory activity test apparatus was developed, and the schematic diagram is presented in the paper. The method of determination of TCE concentration of was calculated from its partial saturation vapor pressure at a given temperature is presented. Encouraging results were obtained on the catalyst containing 10 % CsCl/CaO·SiO2. The direction of the DHC reaction changed radically under described conditions: VDC was not formed at all and the major products were cis- and trans-1,2-dichloroethene. Interesting results were obtained with the catalytic system comprising 10 % (MgO-CsCl) (1:1) supported on SiO2. DHC of 2 % TCE/Ar at 302 °C proceeds quantitatively over 20 h with selectivity for VDC of more than 80%. These systems are suitable to study the factors providing the binding and removal of HCl from the reaction zone. A possible way to increase the selectivity for VDC is the creation of the conditions favoring the DHC of TCE into VDC by the radical mechanism, which was observed in experiments with 10% CsCl/CaSiO3. The directions for future researches are formulated and described. |
| first_indexed | 2026-03-12T15:50:15Z |
| format | Article |
| id | oai:katalizorgua:article-7 |
| institution | Catalysis and petrochemistry |
| keywords_txt_mv | keywords |
| language | English |
| last_indexed | 2026-03-12T15:50:15Z |
| publishDate | 2021 |
| publisher | V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine |
| record_format | ojs |
| spelling | oai:katalizorgua:article-72021-12-10T12:35:04Z Catalytic processing of organochlorine wastes into valuable monomers Каталітична переробка хлорорганічних відходів у цінні мономери Stepasiuk, B. Haievska, T. Spaska, O. Bilokopytov, Yu. Boichenko, S. Yakovlieva, A. dehydrochlorination, 1,1,2-trichloroethane, vinylidene chloride, supported catalyst дегідрохлорування, 1,1,2-трихлоретан, вініліденхлорид, каталізатор The paper is devoted to experimental development of method for 1,1,2-trichlorethane (TCE) dehydrochlorination (DHC). The economic and environmental issues of organic chlorinated compounds processing are described. The basic principle and possible products of TCE processing are presented. The DHC of TCE, which is one of the chlorinated organic wastes produced in the ethylene dichloride process, to vinylidene chloride (VDC) was carried out over CaO, MgO supported on SiO2 and modified with CsCl catalysts. This process was carried out in a continuous flow fixed-bed reactor. The prepared catalysts were characterized by surface area and base properties before/after reaction. The methodology for determining properties of catalyst is described. Laboratory activity test apparatus was developed, and the schematic diagram is presented in the paper. The method of determination of TCE concentration of was calculated from its partial saturation vapor pressure at a given temperature is presented. Encouraging results were obtained on the catalyst containing 10 % CsCl/CaO·SiO2. The direction of the DHC reaction changed radically under described conditions: VDC was not formed at all and the major products were cis- and trans-1,2-dichloroethene. Interesting results were obtained with the catalytic system comprising 10 % (MgO-CsCl) (1:1) supported on SiO2. DHC of 2 % TCE/Ar at 302 °C proceeds quantitatively over 20 h with selectivity for VDC of more than 80%. These systems are suitable to study the factors providing the binding and removal of HCl from the reaction zone. A possible way to increase the selectivity for VDC is the creation of the conditions favoring the DHC of TCE into VDC by the radical mechanism, which was observed in experiments with 10% CsCl/CaSiO3. The directions for future researches are formulated and described. Дегідрохлорування 1,1,2-трихлоретану, який є одним із хлорвмісних органічних відходів, що утворюються в процесі перероблення дихлориду етилену, до хлориду вінілідену здійснювали за допомогою каталізаторів MgO·SiO2 та CaO·SiO2, модифікованих CsCl. Цей процесс проводили в проточному реакторі з нерухомим шаром каталізатора. Синтезовані каталізатори було охарактеризовано за площею поверхні та основними властивостями до/після реакції. Перспективні результати були одержані на каталізаторі 10 % MgO-CsCl, нанесеному на SiO2. Дегідрохлорування 2 % 1,1,2-трихлоретану/N2 при 302 C відбувається кількісно протягом 20 год із селективністю щодо хлориду вінілідену понад 80 %. Ці системи придатні для вивчення факторів, що забезпечують зв'язування та виведення HCl із зони реакції. V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine 2021-11-10 Article Article application/pdf https://kataliz.org.ua/index.php/journal/article/view/7 10.15407/kataliz2021.31.041 Catalysis and petrochemistry; No. 31 (2021): Catalysis and petrochemistry; 41-47 Каталіз та нафтохімія; № 31 (2021): Каталіз та нафтохімія; 41-47 2707-5796 2412-4176 10.15407/kataliz2021.31 en https://kataliz.org.ua/index.php/journal/article/view/7/3 |
| spellingShingle | дегідрохлорування 1,1,2-трихлоретан вініліденхлорид каталізатор Stepasiuk, B. Haievska, T. Spaska, O. Bilokopytov, Yu. Boichenko, S. Yakovlieva, A. Каталітична переробка хлорорганічних відходів у цінні мономери |
| title | Каталітична переробка хлорорганічних відходів у цінні мономери |
| title_alt | Catalytic processing of organochlorine wastes into valuable monomers |
| title_full | Каталітична переробка хлорорганічних відходів у цінні мономери |
| title_fullStr | Каталітична переробка хлорорганічних відходів у цінні мономери |
| title_full_unstemmed | Каталітична переробка хлорорганічних відходів у цінні мономери |
| title_short | Каталітична переробка хлорорганічних відходів у цінні мономери |
| title_sort | каталітична переробка хлорорганічних відходів у цінні мономери |
| topic | дегідрохлорування 1,1,2-трихлоретан вініліденхлорид каталізатор |
| topic_facet | dehydrochlorination 1,1,2-trichloroethane vinylidene chloride supported catalyst дегідрохлорування 1,1,2-трихлоретан вініліденхлорид каталізатор |
| url | https://kataliz.org.ua/index.php/journal/article/view/7 |
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