Abstract: Catalytic hydrogenation of furfural under hydrothermal conditions is of great importance and has recently attracted huge attention as an approach to obtaining a wide range of valuable chemicals from a renewable source. However, the data concerning the reaction mechanism of aqueous-phase furfural hydrogenation are very scarce, and it is still not clear which reactions lead to various carbonyl compounds, such as cyclopentanone, 4-oxopentanal, 5-hydroxy-2-pentanone. Herein, we present the results of an experimental study of the mechanism of reactions occurring in the furfural hydrogenation under hydrothermal conditions over the 1% Pd/CNTs catalyst. The following approaches have been used to study the reaction mechanism: hydrogenation of key intermediates formed upon the furfural conversion, and isotopic labeling experiments using D2O as a tracer in hydrogenation of furfural, which provides direct evidence of the occurring reactions. It was found that the furfural hydrogenation process is realized through four pathways including various reductive and acid-catalyzed furan ring opening reactions. The methods and approaches used in the present work, as well as the results obtained, can be useful in studying the mechanism of aqueous-phase hydrogenation of a wide range of oxygen-containing substrates in the presence of catalysts of different compositions.

Cite: Mironenko R.M. , Belskaya O.B. , Talsi V.P. , Likholobov V.A.
Mechanism of Pd/C-catalyzed hydrogenation of furfural under hydrothermal conditions
Journal of Catalysis. 2020. V.389. P.721-734. DOI: 10.1016/j.jcat.2020.07.013 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Mar 17, 2020
Accepted:	Jul 15, 2020
Published online:	Jul 24, 2020
Published print:	Sep 1, 2020

Identifiers:

Web of science:	WOS:000566793300008
Scopus:	2-s2.0-85089011702
Elibrary:	45446525
OpenAlex:	W3044960521

Citing:

DB	Citing
Scopus	61
Web of science	42
OpenAlex	59

Altmetrics: