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