Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis
This work reports on the ultrasonic synthesis of layered double hydroxides (LDH), also known as hydrotalcite-type materials. We have studied the influence of ultrasonic irradiation parameters (power, time, temperature) on the physicochemical properties of Ni2Mg4Al1.8La0.2 hydrotalcite-type precursor...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417724000543 |
| _version_ | 1797244999856816128 |
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| author | H. Kalawoun C. Ciotonea M. Marinova C. Gennequin F. Delattre |
| author_facet | H. Kalawoun C. Ciotonea M. Marinova C. Gennequin F. Delattre |
| author_sort | H. Kalawoun |
| collection | DOAJ |
| description | This work reports on the ultrasonic synthesis of layered double hydroxides (LDH), also known as hydrotalcite-type materials. We have studied the influence of ultrasonic irradiation parameters (power, time, temperature) on the physicochemical properties of Ni2Mg4Al1.8La0.2 hydrotalcite-type precursors and related mixed oxides (MO). The low-frequency acoustic cavitation (22 kHz) was applied during the precipitation and aging steps of co-precipitation synthesis and the results were compared to the classical preparation route. The materials were characterized by ATR-FTIR, XRD, N2 adsorption–desorption, SEM-EDX, S/TEM-HAADF, and XPS. Using the combination of acoustic cavitation-assisted precipitation and aging steps, XRD experiments show a higher purity hydrotalcite phase and a better incorporation of lanthanum ions into the LDH structure. As expected, morphological characterization shows a reduction in average crystallite size and an increase in surface area and pore volume, combined with a drastic reduction in synthesis time (45 min at room temperature versus 19 h at 60 °C in conventional synthesis). The insertion of a larger quantity of La is observed by S/TEM-EDSX mapping which also shows a better distribution of lanthanum atoms within the LDH and mixed oxide structures. |
| first_indexed | 2024-04-24T19:19:56Z |
| format | Article |
| id | doaj.art-b0866fbce5da46b5b17f38aab654c8ff |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-04-24T19:19:56Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-b0866fbce5da46b5b17f38aab654c8ff2024-03-26T04:26:32ZengElsevierUltrasonics Sonochemistry1350-41772024-03-01104106806Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesisH. Kalawoun0C. Ciotonea1M. Marinova2C. Gennequin3F. Delattre4Unité de Chimie Environnementale et Interactions sur le Vivant UCEIV), UR 4492, Université du Littoral-Côte d’Opale, 59140 Dunkerque, FranceUnité de Chimie Environnementale et Interactions sur le Vivant UCEIV), UR 4492, Université du Littoral-Côte d’Opale, 59140 Dunkerque, FranceUnité Matériaux et Transformations (UMET), UMR 8207, Institut Michel-Eugène Chevreul, Université de Lille, 59000 Lille, FranceUnité de Chimie Environnementale et Interactions sur le Vivant UCEIV), UR 4492, Université du Littoral-Côte d’Opale, 59140 Dunkerque, FranceUnité de Chimie Environnementale et Interactions sur le Vivant UCEIV), UR 4492, Université du Littoral-Côte d’Opale, 59140 Dunkerque, France; Corresponding author.This work reports on the ultrasonic synthesis of layered double hydroxides (LDH), also known as hydrotalcite-type materials. We have studied the influence of ultrasonic irradiation parameters (power, time, temperature) on the physicochemical properties of Ni2Mg4Al1.8La0.2 hydrotalcite-type precursors and related mixed oxides (MO). The low-frequency acoustic cavitation (22 kHz) was applied during the precipitation and aging steps of co-precipitation synthesis and the results were compared to the classical preparation route. The materials were characterized by ATR-FTIR, XRD, N2 adsorption–desorption, SEM-EDX, S/TEM-HAADF, and XPS. Using the combination of acoustic cavitation-assisted precipitation and aging steps, XRD experiments show a higher purity hydrotalcite phase and a better incorporation of lanthanum ions into the LDH structure. As expected, morphological characterization shows a reduction in average crystallite size and an increase in surface area and pore volume, combined with a drastic reduction in synthesis time (45 min at room temperature versus 19 h at 60 °C in conventional synthesis). The insertion of a larger quantity of La is observed by S/TEM-EDSX mapping which also shows a better distribution of lanthanum atoms within the LDH and mixed oxide structures.http://www.sciencedirect.com/science/article/pii/S1350417724000543Layered double hydroxides synthesisNi-Mg-Al-La catalystsUltrasonic synthesisMixed oxidesLanthanum insertion |
| spellingShingle | H. Kalawoun C. Ciotonea M. Marinova C. Gennequin F. Delattre Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis Ultrasonics Sonochemistry Layered double hydroxides synthesis Ni-Mg-Al-La catalysts Ultrasonic synthesis Mixed oxides Lanthanum insertion |
| title | Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis |
| title_full | Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis |
| title_fullStr | Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis |
| title_full_unstemmed | Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis |
| title_short | Investigation of the physico-chemical properties of Ni-Mg-Al-La catalysts from ultrasound-assisted synthesis |
| title_sort | investigation of the physico chemical properties of ni mg al la catalysts from ultrasound assisted synthesis |
| topic | Layered double hydroxides synthesis Ni-Mg-Al-La catalysts Ultrasonic synthesis Mixed oxides Lanthanum insertion |
| url | http://www.sciencedirect.com/science/article/pii/S1350417724000543 |
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