Stability of PdO-Re2O7/SO42-/ZrO2-Al2O3 catalyst for direct synthesis of propylene from ethylene Full article
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Юбилейная научная конференция "XXI век: Химия в жизнь" 24-26 Apr 2019 , Омск |
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AIP Conference Proceedings
ISSN: 0094-243X , E-ISSN: 1551-7616 |
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| Output data | Year: 2019, Volume: 2143, Pages: 020011 Pages count : 9 DOI: 10.1063/1.5122910 | ||
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 46.2.5 |
Abstract:
During tests of palladium-rhenium catalysts based on sulfated zirconia in the process of direct synthesis of propylene from ethylene, it was found out that modifying the support with γ-Al2O3 increases significantly the stability of the system. Multi-cycle tests showed that systems with alumina content of 20 and 40 wt. % maintain its activity during a few tens of hours at the level of 50-80 %. The propylene yield from cycle to cycle remains practically unchanged (28-35 wt. %). According to UV spectroscopy and GLC with MSD, changes in the palladium and rhenium valence state don’t occur during the catalysts operation. The catalyst deactivation is caused by the C8+ oligomers deposit on its surface resulting from secondary processes of butenes oligomerization on the catalyst acid sites and C6+ hydrocarbons metathesis.
Cite:
Sayfulina L.F.
, Buluchevskiy E.A.
, Lavrenov A.V.
, Arbuzov A.B.
, Karpova T.R.
Stability of PdO-Re2O7/SO42-/ZrO2-Al2O3 catalyst for direct synthesis of propylene from ethylene
AIP Conference Proceedings. 2019. V.2143. P.020011. DOI: 10.1063/1.5122910 WOS Scopus РИНЦ OpenAlex
Stability of PdO-Re2O7/SO42-/ZrO2-Al2O3 catalyst for direct synthesis of propylene from ethylene
AIP Conference Proceedings. 2019. V.2143. P.020011. DOI: 10.1063/1.5122910 WOS Scopus РИНЦ OpenAlex
Dates:
| Published online: | Aug 16, 2019 |
Identifiers:
| Web of science: | WOS:000505769900011 |
| Scopus: | 2-s2.0-85071272573 |
| Elibrary: | 41659360 |
| OpenAlex: | W2969020061 |