Two Scenarios of Dechlorination of the Chlorinated Hydrocarbons over Nickel-Alumina Catalyst | Sciact - CRIS-система Института катализа

Two Scenarios of Dechlorination of the Chlorinated Hydrocarbons over Nickel-Alumina Catalyst Научная публикация

Журнал

Catalysts
ISSN: 2073-4344

Вых. Данные

Год: 2020, Том: 10, Номер: 12, Номер статьи : 1446, Страниц : 17 DOI: 10.3390/catal10121446

Ключевые слова

hydrodechlorination; catalytic pyrolysis; carbon nanofibers; nickel catalyst; 1,2-dichloroethane; chloroform; chlorobenzene

Авторы

Mishakov Ilya V. ^1,2 , Vedyagin Aleksey A. ^1,2 , Bauman Yury I. ^1,2 , Potylitsyna Arina R. ^1,3 , Kadtsyna Anastasiya S. ^1,3 , Chesnokov Vladimir V. ¹ , Nalivaiko Anton Yu. ² , Gromov Alexander A. ² , Buyanov Roman A. ¹

Организации

1	Department of Materials Science and Functional Materials, Boreskov Institute of Catalysis SB RAS
2	Catalysis Lab, National University of Science and Technology MISIS
3	Department of Natural Sciences, Novosibirsk State University

Информация о финансировании (2)

1	Федеральное агентство научных организаций России	0303-2016-0014
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	075-00268-20-02 (0718-2020-0040)(АААА-А20-120070890064-3)

Dechlorination processes attract great interest since they are involved in environmental protection and waste disposal technologies. In this paper, the process of gas-phase dechlorination of 1,2-dichloroethane, chloroform, and chlorobenzene over Ni/Al2O3 catalyst (90 wt% Ni) prepared by a coprecipitation technique was investigated. The reduction behavior of the oxide precursor NiO/Al2O3 was studied by thermogravimetric analysis in a hydrogen medium. A thermodynamic assessment of the conditions under which metallic nickel undergoes deactivation due to the formation of nickel chloride was performed. The dechlorination of chlorinated substrates was studied using a gravimetric flow-through system equipped with McBain balances in a wide range of temperatures (350–650 °C) and hydrogen concentrations (0–98 vol%). The impact of these parameters on selectivity towards the products of hydrodechlorination (C2H4, C2H6, and C6H6) and catalytic pyrolysis (carbon nanomaterial and CH4) was explored. The relationship between the mechanisms of the catalytic hydrodechlorination and the carbide cycle was discussed, and the specific reaction conditions for the implementation of both scenarios were revealed. According to the electron microscopy data, the carbonaceous products deposited on nickel particles during catalytic pyrolysis are represented by nanofibers with a disordered structure formed due to the peculiarity of the process including the side carbon methanation reaction.

Mishakov I.V. , Vedyagin A.A. , Bauman Y.I. , Potylitsyna A.R. , Kadtsyna A.S. , Chesnokov V.V. , Nalivaiko A.Y. , Gromov A.A. , Buyanov R.A.
Two Scenarios of Dechlorination of the Chlorinated Hydrocarbons over Nickel-Alumina Catalyst

Catalysts. 2020. V.10. N12. 1446 :1-17. DOI: 10.3390/catal10121446 WOS Scopus РИНЦ CAPlus OpenAlex

Полный текст от издателя

Поступила в редакцию:	31 окт. 2020 г.
Принята к публикации:	8 дек. 2020 г.
Опубликована в печати:	10 дек. 2020 г.
Опубликована online:	10 дек. 2020 г.

Web of science:	WOS:000602268900001
Scopus:	2-s2.0-85098489351
РИНЦ:	45048382
Chemical Abstracts:	2021:35620
OpenAlex:	W3111198069

БД	Цитирований
Scopus	6
Web of science	6
РИНЦ	6
OpenAlex	6