Реферат: PdCu/Al2O3 (Pd = 0.1 wt.%, Cu = 0.1 wt.%) catalyst and its monometallic analogues (Pd/Al2O3 and Cu/Al2O3) were prepared by combination of deposition-precipitation and impregnation methods. The structure of the catalysts was studied by means of XRD, TEM, EDS, TPD-NH3, and DRIFTS. In a standard run (275 ○C, 5 h), Cu/Al2O3 converts 11 % of ethanol to α-alcohols with 0.6 % selectivity, whereas Pd/Al2O3 converts 24 % of ethanol to α-alcohols with 70 % selectivity. The high performance of Pd/Al2O3 was attributed to the catalysis on the Pd°-Al2O3 interfaces. After 3 sequential runs, the activity of Pd/Al2O3 decreases by 98 %. It was explained by blocking of Pd° sites in Pd/Al2O3 by CO molecules produced in side reactions. Modification of Pd/Al2O3 with Cu species results in the formation of PdCu/Al2O3 catalyst containing PdCu alloy particles with the size of 4 nm. This leads to an increased durability of bimetallic sample, because of suppressing CO sorption on Pd° sites in alloy particles. As a result, for the PdCu/Al2O3 catalyst, sustained and high conversion (41 %) accompanied by high selectivity to α-alcohols (91 %) was observed in 20 sequential runs.

Библиографическая ссылка: Nikolaev S.A. , Tsodikov M.V. , Chistyakov A.V. , Chistyakova P.A. , Ezzhelenko D.I. , Shilina M.I.
PdCu nanoalloy supported on alumina: A stable and selective catalyst for the conversion of bioethanol to linear α-alcohols
Catalysis Today. 2020. V.379. P.50-61. DOI: 10.1016/j.cattod.2020.06.061 Scopus РИНЦ OpenAlex

Идентификаторы БД:

Scopus:	2-s2.0-85087428056
РИНЦ:	45495357
OpenAlex:	W3038707510

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БД	Цитирований
OpenAlex	13

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