Mechanochemically synthesized LiAlOx catalyst for aqueous aldol condensation of furfural with acetone

Mechanochemically synthesized LiAlOx catalyst for aqueous aldol condensation of furfural with acetone Full article

Journal

Catalysis for Sustainable Energy
ISSN: 2084-6819

Output data

Year: 2017, Volume: 4, Pages: 8-16 Pages count : 9 DOI: 10.1515/cse-2017-0003

Tags

layered double hydroxides, mechanical activation, aqueous-phase processing, furfural, aldol condensation

Authors

Stepanova L. N. ^1,2 , Mironenko R. M. ^1,2 , Belskaya O. B. ^1,3 , Likholobov V. A. ^1,3,4

Affiliations

1	Institute of Hydrocarbons Processing, Siberian Branch of Russian Academy of Sciences, Neftezavodskaya st., 54, 644040 Omsk, Russia,
2	Dostoevsky Omsk State University, Mira ave., 55a, 644077 Omsk, Russia
3	Omsk State Technical University, Mira ave., 11, 644050 Omsk, Russia
4	Omsk Scientific Centre, Siberian Branch of Russian Academy of Sciences, Karla Marksa ave., 15, 644024 Omsk, Russia

Funding (1)

Russian Foundation for Basic Research

15-03-04405

: In the present study, the mechanochemical method is proposed for synthesis of LiAl-layered double hydroxides (LDHs). This method is eco-friendly and allows obtaining LiAl-LDH under relatively mild conditions (centripetal acceleration of milling bodies 300 m s-2) and in a short period of time (15 minutes). The structures of as-prepared LiAl-LDH, LiAl-mixed oxide (calcined LDH) and “activated” LiAl-LDH obtained after rehydration of the corresponding mixed oxide were confirmed by X-ray diffraction. The basicity of LiAlOx was measured by temperature-programmed desorption of CO2 and double isotherm technique. According to data obtained, LiAl-mixed oxide has a significant higher carbon dioxide adsorption capacity compared to MgAlmixed oxides prepared by conventional co-precipitation method. This indicates a large amount of basic surface sites with different strength (strong, medium and weak) for Li-containing systems. The formation of “activated” LiAl-LDH having Brønsted basic sites (OH groups in the interlayer space) provides an increased catalytic activity of LiAlOx in the reaction of aqueous-phase aldol condensation between furfural and acetone.

Stepanova L.N. , Mironenko R.M. , Belskaya O.B. , Likholobov V.A.
Mechanochemically synthesized LiAlOx catalyst for aqueous aldol condensation of furfural with acetone

Catalysis for Sustainable Energy. 2017. V.4. P.8-16. DOI: 10.1515/cse-2017-0003 OpenAlex

Full text from publisher

Submitted:	Jan 30, 2017
Accepted:	Mar 13, 2017
Published print:	Oct 26, 2017

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