Ethylene production by the oxidative condensation of methane in the presence of MnMW/SiO2 catalysts (M = Na, K, and Rb)
- Авторы: Ismagilov I.Z.1, Matus E.V.1, Popkova V.S.1,2, Kuznetsov V.V.1, Ushakov V.A.1, Yashnik S.A.1, Prosvirin I.P.1, Kerzhentsev M.A.1, Ismagilov Z.R.1,3
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Учреждения:
- Boreskov Institute of Catalysis, Siberian Branch
- Novosibirsk State Technical University
- Institute of Coal Chemistry and Chemical Materials Science, Siberian Branch
- Выпуск: Том 58, № 5 (2017)
- Страницы: 622-629
- Раздел: Article
- URL: https://journals.rcsi.science/0023-1584/article/view/163307
- DOI: https://doi.org/10.1134/S0023158417050068
- ID: 163307
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Аннотация
The samples of MnMW/SiO2 (M = Na, K, and Rb) were synthesized using various synthesis methods under varied heat treatment conditions and their physicochemical properties and activity in the reaction of the oxidative condensation of methane (OCM) were studied for the development of an effective catalyst for the resource-saving process of natural gas conversion into ethylene. It was found that the preparation method exerts an effect on the textural characteristics of the samples and the reducing properties of the cations of manganese and tungsten. It was determined that the composition of a W-containing phase depends on the alkali metal, and a ratio between the polymorphous modifications of SiO2 is controlled by the method of synthesis and the conditions of catalyst heat treatment. It was established that the yield of C2 hydrocarbons in the OCM reaction increased with the use of incipient wetness impregnation instead of the method of mixing with a suspension for catalyst preparation and with an increase in the catalyst heat treatment temperature from 700 to 1000°C. The optimum composition of the catalyst and the condition of its synthesis were found: 2Mn0.8Na3W/SiO2 obtained by the impregnation method and calcined at 1000°C ensured the yield of target products of ~20% with a CH4 conversion of ~35% at a reaction temperature of 850°C.
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Об авторах
I. Ismagilov
Boreskov Institute of Catalysis, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
E. Matus
Boreskov Institute of Catalysis, Siberian Branch
Автор, ответственный за переписку.
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
V. Popkova
Boreskov Institute of Catalysis, Siberian Branch; Novosibirsk State Technical University
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090; Novosibirsk, 630073
V. Kuznetsov
Boreskov Institute of Catalysis, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
V. Ushakov
Boreskov Institute of Catalysis, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
S. Yashnik
Boreskov Institute of Catalysis, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
I. Prosvirin
Boreskov Institute of Catalysis, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
M. Kerzhentsev
Boreskov Institute of Catalysis, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090
Z. Ismagilov
Boreskov Institute of Catalysis, Siberian Branch; Institute of Coal Chemistry and Chemical Materials Science, Siberian Branch
Email: matus@catalysis.ru
Россия, Novosibirsk, 630090; Kemerovo, 650000
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