Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde
AbstractA kind of highly dispersed ZrO2 modified Cs/SiO2-based catalyst was prepared via ligand–assisted impregnation strategy. The catalyst was then used to the aldol condensation reaction of methyl acetate (MAc) with formaldehyde (FA) to produce methyl acrylate (MA). The effect of highly dispersed...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | Journal of Chemical Engineering of Japan |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/00219592.2023.2300818 |
| _version_ | 1797301969332731904 |
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| author | Kai Zhao Senlin Deng Guoliang Zhang Chunshan Li |
| author_facet | Kai Zhao Senlin Deng Guoliang Zhang Chunshan Li |
| author_sort | Kai Zhao |
| collection | DOAJ |
| description | AbstractA kind of highly dispersed ZrO2 modified Cs/SiO2-based catalyst was prepared via ligand–assisted impregnation strategy. The catalyst was then used to the aldol condensation reaction of methyl acetate (MAc) with formaldehyde (FA) to produce methyl acrylate (MA). The effect of highly dispersed ZrO2 promotion on Cs/SiO2 catalyst selectivity and activity was studied as well. Various techniques such as XRD, FT-IR, TEM, XPS, NH3-TPD, CO2-TPD, N2 physical adsorption, and solid-state MAS NMR were used to characterize the structural features, Cs species states, and acid–base properties of these catalysts. The use of Zr(acac)4 as a zirconium source for modifying Cs/SiO2 could be considered optimal for ligand-assisted impregnation. By modifying the highly dispersed ZrO2, more Cs–O–Si species and a suitable balance of acid–base sites were formed in the Zr–Cs/SiO2 catalyst. As a result, the catalyst showed significant improvements in selectivity and yield of MA under optimized reaction conditions. This study is beneficial for the development and optimization of catalysts for aldol condensation and provides a reference for future industrial applications. |
| first_indexed | 2024-03-07T23:30:09Z |
| format | Article |
| id | doaj.art-f31be7b8ac8e4ba2b293674a4a5dc7c8 |
| institution | Directory Open Access Journal |
| issn | 0021-9592 1881-1299 |
| language | English |
| last_indexed | 2024-03-07T23:30:09Z |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Chemical Engineering of Japan |
| spelling | doaj.art-f31be7b8ac8e4ba2b293674a4a5dc7c82024-02-20T19:21:05ZengTaylor & Francis GroupJournal of Chemical Engineering of Japan0021-95921881-12992024-12-0157110.1080/00219592.2023.2300818Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with FormaldehydeKai Zhao0Senlin Deng1Guoliang Zhang2Chunshan Li3Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, The National Key Laboratory of Clean and Efficient Coking Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, P. R. ChinaBeijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, The National Key Laboratory of Clean and Efficient Coking Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, P. R. ChinaBeijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, The National Key Laboratory of Clean and Efficient Coking Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, P. R. ChinaBeijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, The National Key Laboratory of Clean and Efficient Coking Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, P. R. ChinaAbstractA kind of highly dispersed ZrO2 modified Cs/SiO2-based catalyst was prepared via ligand–assisted impregnation strategy. The catalyst was then used to the aldol condensation reaction of methyl acetate (MAc) with formaldehyde (FA) to produce methyl acrylate (MA). The effect of highly dispersed ZrO2 promotion on Cs/SiO2 catalyst selectivity and activity was studied as well. Various techniques such as XRD, FT-IR, TEM, XPS, NH3-TPD, CO2-TPD, N2 physical adsorption, and solid-state MAS NMR were used to characterize the structural features, Cs species states, and acid–base properties of these catalysts. The use of Zr(acac)4 as a zirconium source for modifying Cs/SiO2 could be considered optimal for ligand-assisted impregnation. By modifying the highly dispersed ZrO2, more Cs–O–Si species and a suitable balance of acid–base sites were formed in the Zr–Cs/SiO2 catalyst. As a result, the catalyst showed significant improvements in selectivity and yield of MA under optimized reaction conditions. This study is beneficial for the development and optimization of catalysts for aldol condensation and provides a reference for future industrial applications.https://www.tandfonline.com/doi/10.1080/00219592.2023.2300818Cs/SiO2 catalystZrO2 modificationAldol condensationMethyl acrylateAcid–base synergy |
| spellingShingle | Kai Zhao Senlin Deng Guoliang Zhang Chunshan Li Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde Journal of Chemical Engineering of Japan Cs/SiO2 catalyst ZrO2 modification Aldol condensation Methyl acrylate Acid–base synergy |
| title | Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde |
| title_full | Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde |
| title_fullStr | Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde |
| title_full_unstemmed | Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde |
| title_short | Highly Dispersed ZrO2 Modified Cs/SiO2-Based Catalyst via Ligand–Assisted Strategy for Aldol Condensation of Methyl Acetate with Formaldehyde |
| title_sort | highly dispersed zro2 modified cs sio2 based catalyst via ligand assisted strategy for aldol condensation of methyl acetate with formaldehyde |
| topic | Cs/SiO2 catalyst ZrO2 modification Aldol condensation Methyl acrylate Acid–base synergy |
| url | https://www.tandfonline.com/doi/10.1080/00219592.2023.2300818 |
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