
Tuning the acidic-basic properties by Zn-substitution in Mg-Al hydrotalcites as optimal catalysts for the aldol condensation reaction
- Author
- Willinton Yesid Hernández Enciso (UGent) , Funda Aliç (UGent) , An Verberckmoes (UGent) and Pascal Van Der Voort (UGent)
- Organization
- Abstract
- Mg-Zn-Al hydrotalcites and derived mixed oxides with different Mg2+-to-Zn2+ ratios were prepared by co-precipitation in super-saturated conditions, followed by thermal decomposition at 500 A degrees C. The synthesized materials were evaluated as catalysts for the self-condensation of octanal in order to establish structure-to-functionality properties of the prepared materials. The presence of zinc affects the structural and textural properties of the as-synthesized hydrotalcites and derived mixed oxides, and provokes a remarkable modification on the acidic-basic properties of the materials as studied by CO2 and NH3-TPD. The presence of Zn2+ caused an increment in the concentration of surface acidic sites compared to the binary Mg-Al system. The samples characterized by a Zn/Mg ratio aecurrency sign1 showed the optimal ratio of acidic and basic sites and the best catalytic performance for the production of the alpha,beta-unsaturated aldehyde. The reconstruction of the layered materials (starting from the mixed oxides) caused an increment in the concentration of surface OH- groups, further modifying the selectivity of the reaction.
- Keywords
- SURFACE, ACETONE, HALIDES, REHYDRATION, TRANSITION-METAL, ALDEHYDES, ANIONIC CLAYS, MIXED OXIDES, HETEROGENEOUS CATALYSIS, LAYERED DOUBLE HYDROXIDES
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8172887
- MLA
- Hernández Enciso, Willinton Yesid, et al. “Tuning the Acidic-Basic Properties by Zn-Substitution in Mg-Al Hydrotalcites as Optimal Catalysts for the Aldol Condensation Reaction.” JOURNAL OF MATERIALS SCIENCE, vol. 52, no. 1, 2017, pp. 628–42.
- APA
- Hernández Enciso, W. Y., Aliç, F., Verberckmoes, A., & Van Der Voort, P. (2017). Tuning the acidic-basic properties by Zn-substitution in Mg-Al hydrotalcites as optimal catalysts for the aldol condensation reaction. JOURNAL OF MATERIALS SCIENCE, 52(1), 628–642.
- Chicago author-date
- Hernández Enciso, Willinton Yesid, Funda Aliç, An Verberckmoes, and Pascal Van Der Voort. 2017. “Tuning the Acidic-Basic Properties by Zn-Substitution in Mg-Al Hydrotalcites as Optimal Catalysts for the Aldol Condensation Reaction.” JOURNAL OF MATERIALS SCIENCE 52 (1): 628–42.
- Chicago author-date (all authors)
- Hernández Enciso, Willinton Yesid, Funda Aliç, An Verberckmoes, and Pascal Van Der Voort. 2017. “Tuning the Acidic-Basic Properties by Zn-Substitution in Mg-Al Hydrotalcites as Optimal Catalysts for the Aldol Condensation Reaction.” JOURNAL OF MATERIALS SCIENCE 52 (1): 628–642.
- Vancouver
- 1.Hernández Enciso WY, Aliç F, Verberckmoes A, Van Der Voort P. Tuning the acidic-basic properties by Zn-substitution in Mg-Al hydrotalcites as optimal catalysts for the aldol condensation reaction. JOURNAL OF MATERIALS SCIENCE. 2017;52(1):628–42.
- IEEE
- [1]W. Y. Hernández Enciso, F. Aliç, A. Verberckmoes, and P. Van Der Voort, “Tuning the acidic-basic properties by Zn-substitution in Mg-Al hydrotalcites as optimal catalysts for the aldol condensation reaction,” JOURNAL OF MATERIALS SCIENCE, vol. 52, no. 1, pp. 628–642, 2017.
@article{8172887, abstract = {Mg-Zn-Al hydrotalcites and derived mixed oxides with different Mg2+-to-Zn2+ ratios were prepared by co-precipitation in super-saturated conditions, followed by thermal decomposition at 500 A degrees C. The synthesized materials were evaluated as catalysts for the self-condensation of octanal in order to establish structure-to-functionality properties of the prepared materials. The presence of zinc affects the structural and textural properties of the as-synthesized hydrotalcites and derived mixed oxides, and provokes a remarkable modification on the acidic-basic properties of the materials as studied by CO2 and NH3-TPD. The presence of Zn2+ caused an increment in the concentration of surface acidic sites compared to the binary Mg-Al system. The samples characterized by a Zn/Mg ratio aecurrency sign1 showed the optimal ratio of acidic and basic sites and the best catalytic performance for the production of the alpha,beta-unsaturated aldehyde. The reconstruction of the layered materials (starting from the mixed oxides) caused an increment in the concentration of surface OH- groups, further modifying the selectivity of the reaction.}, author = {Hernández Enciso, Willinton Yesid and Aliç, Funda and Verberckmoes, An and Van Der Voort, Pascal}, issn = {0022-2461}, journal = {JOURNAL OF MATERIALS SCIENCE}, keywords = {SURFACE,ACETONE,HALIDES,REHYDRATION,TRANSITION-METAL,ALDEHYDES,ANIONIC CLAYS,MIXED OXIDES,HETEROGENEOUS CATALYSIS,LAYERED DOUBLE HYDROXIDES}, language = {eng}, number = {1}, pages = {628--642}, title = {Tuning the acidic-basic properties by Zn-substitution in Mg-Al hydrotalcites as optimal catalysts for the aldol condensation reaction}, url = {http://dx.doi.org/10.1007/s10853-016-0360-3}, volume = {52}, year = {2017}, }
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