Реферат: 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.

Библиографическая ссылка: 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

Даты:

Опубликована online:

16 авг. 2019 г.

Идентификаторы БД:

Web of science:	WOS:000505769900011
Scopus:	2-s2.0-85071272573
РИНЦ:	41659360
OpenAlex:	W2969020061

Цитирование в БД:

БД	Цитирований
Scopus	2
Web of science	1
OpenAlex	2

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