Please use this identifier to cite or link to this item:
https://dspace.ctu.edu.vn/jspui/handle/123456789/61884
Title: | Vanilin conversion by aldol condensation using hydrotalcite Mg-Al modified –Y zeolite as heterogeneous catalysts |
Authors: | Nguyen, Thi Thai Nguyen, Thi Minh Thu |
Keywords: | Vanillin Aldol condensation Feruloyl mathane Heterogeneous catalyst Modified-Y zeolite |
Issue Date: | 2021 |
Series/Report no.: | Vietnam Journal of Science and Technology;Vol.59, No.01 .- P.66-78 |
Abstract: | Mg-Al hydrotalcite, MgO-Al2O3 mixed oxides and modified-Y zeolite (sulfated Y zeolite and copper ion-exchanged Y zeolite) were prepared and characterized by XRD, EDX and XRF techniques. These materials were used as heterogeneous catalysts in aldol condensation of vanillin and acetone.The obtained results showed that the heterogeneous acid catalysts as modified-Y zeolites were more effective than the heterogeneous base catalysts as hydrotalcite Mg-Al and MgO-Al2O3 mixed oxides in aldol condensation reaction of vanillin. The highest conversion of vanillin was 95.5% when the reaction was carried out at 120oC in 5 hours, using sulfated Y zeolite. The catalytic activity of copper ion-exchanged Y zeolite is more stable than sulfated Y zeolite with the same reaction conditions. |
URI: | https://dspace.ctu.edu.vn/jspui/handle/123456789/61884 |
ISSN: | 2525-2518 |
Appears in Collections: | Vietnam journal of science and technology |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
_file_ Restricted Access | 2.57 MB | Adobe PDF | ||
Your IP: 3.144.252.243 |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.