Decomposition of Chlorinated Hydrocarbons on Iron-Group Metals Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2001, Volume: 42, Number: 4, Pages: 543-548 Pages count : 6 DOI: 10.1023/A:1010585808978 | ||||
| Tags | Nickel; Methanation; Graphite; Cobalt; Hydrocarbon | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 00-15-97440 |
| 2 | Russian Foundation for Basic Research | 00-03-32431 |
Abstract:
The decomposition of 1,2-dichloroethane and chlorobenzene on nickel–alumina, cobalt–alumina, and iron–alumina catalysts at 400–600°C was studied. Thermodynamic calculations demonstrated that the susceptibility of metals to chlorination under exposure to HCl increases in the order Ni < Co < Fe. The addition of hydrogen to the reaction mixture was found to dramatically decrease the rate of carbon deposition in the decomposition of 1,2-dichloroethane because of the intense hydrogenation of intermediates that are graphite precursors. Two fundamentally different reaction paths were found in the degradation of 1,2-dichloroethane: decomposition via a carbide-cycle mechanism with the formation of carbon as the main product (under conditions of a deficiency of hydrogen) and 1,2-dichloroethane hydrodechlorination accompanied by methanation of the formed carbon (under conditions of an excess of hydrogen). The degradation of chlorobenzene diluted with hydrogen in a molar ratio of 1 : 50 was not accompanied by carbon formation on the catalyst. A comparison between the selectivity for reaction products on nickel–alumina and cobalt–alumina catalysts indicated that the former catalyst is more active in the rupture of C–C bonds and in the methanation reaction of deposited carbon, whereas the latter is more favorable for hydrodechlorination. The optimum conditions and thermal regime for efficient and stable operation of the catalysts were found.
Cite:
Mishakov I.V.
, Chesnokov V.V.
, Buyanov R.A.
, Pakhomov N.A.
Decomposition of Chlorinated Hydrocarbons on Iron-Group Metals
Kinetics and Catalysis. 2001. V.42. N4. P.543-548. DOI: 10.1023/A:1010585808978 WOS Scopus РИНЦ ANCAN OpenAlex
Decomposition of Chlorinated Hydrocarbons on Iron-Group Metals
Kinetics and Catalysis. 2001. V.42. N4. P.543-548. DOI: 10.1023/A:1010585808978 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Мишаков И.В.
, Чесноков В.В.
, Буянов Р.А.
, Пахомов Н.А.
Закономерности разложения хлорпроизводных углеводородов на металлах подгруппы железа
Кинетика и катализ. 2001. Т.42. №4. С.598-603. РИНЦ
Закономерности разложения хлорпроизводных углеводородов на металлах подгруппы железа
Кинетика и катализ. 2001. Т.42. №4. С.598-603. РИНЦ
Dates:
| Submitted: | Jan 21, 2000 |
| Published print: | Jul 1, 2001 |
Identifiers:
| Web of science: | WOS:000171016500019 |
| Scopus: | 2-s2.0-0011953183 |
| Elibrary: | 13373704 |
| Chemical Abstracts: | 2001:688422 |
| Chemical Abstracts (print): | 136:5651 |
| OpenAlex: | W73621800 |