Methods of Increasing the Stability of the Catalytic Effect of MFI Type Zeolites and the Total Service Life of Catalysts Based on Them Full article
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Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
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| Output data | Year: 2013, Volume: 5, Number: 4, Pages: 275-282 Pages count : 7 DOI: 10.1134/S2070050413040041 | ||
| Tags | methanol into aromatic hydrocarbons, MFI, zeolite | ||
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Abstract:
Increasing the operational stability of MFI-type zeolite catalysts is topical for the creation of highly efficient catalysts for the conversion of methanol or C2-C4 hydrocarbon gases into aromatic hydrocarbons, i.e., important industrial processes. This study proposes three new approaches to increasing the stability of zeolite catalysts: selective dealumination on the outer surface of MFI zeolite crystals, structurally selective ion exchange on the outer surface of crystals, and the application of an isothermal (multitube) reactor. The effect of selective dealumination and structurally selective ion exchange conditions on the SiO2/Al2O3 molar ratio in the zeolite on the interregeneration period duration in the conversion of methanol into hydrocarbons has been studied. It has been established that the selective dealumination of the outer surface increased the interregeneration period duration by 3–5 times. Structurally selective ion exchange on the outer surface of zeolite crystals allows us to increase the interregeneration period duration by 2–4 times and to decrease the regeneration temperature and duration due to the change of the properties of deposited coke. The application of a multitube reactor facilitates the procedure of regeneration in comparison with an adiabatic reactor due to the formation of less condensed coke depositions.
Cite:
Echevskii G.V.
, Kodenev E.G.
, Nosyreva G.N.
Methods of Increasing the Stability of the Catalytic Effect of MFI Type Zeolites and the Total Service Life of Catalysts Based on Them
Catalysis in Industry. 2013. V.5. N4. P.275-282. DOI: 10.1134/S2070050413040041 WOS Scopus РИНЦ OpenAlex
Methods of Increasing the Stability of the Catalytic Effect of MFI Type Zeolites and the Total Service Life of Catalysts Based on Them
Catalysis in Industry. 2013. V.5. N4. P.275-282. DOI: 10.1134/S2070050413040041 WOS Scopus РИНЦ OpenAlex
Original:
Ечевский Г.В.
, Коденев Е.Г.
, Носырева Г.Н.
Способы повышения стабильности каталитического действия цеолитов типа MFI и увеличения общего срока службы катализаторов на их основе
Катализ в промышленности. 2013. №4. С.6-10. РИНЦ ANCAN
Способы повышения стабильности каталитического действия цеолитов типа MFI и увеличения общего срока службы катализаторов на их основе
Катализ в промышленности. 2013. №4. С.6-10. РИНЦ ANCAN
Dates:
| Submitted: | Jul 3, 2012 |
| Published print: | Oct 1, 2013 |
| Published online: | Dec 17, 2013 |
Identifiers:
| Web of science: | WOS:000433667800001 |
| Scopus: | 2-s2.0-84891789215 |
| Elibrary: | 21466518 |
| OpenAlex: | W2089380166 |