Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst
Allylic alcohols typically produced through selective hydrogenation of <i>α</i>,<i>β</i>-unsaturated aldehydes are important intermediates in fine chemical industry, but it is still a challenge to achieve its high selectivity transformation. Herein, we report a series of TiO&...
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MDPI AG
2023-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/8/3336 |
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| author | Mengting Chen Yun Wang Limin Jiang Yuran Cheng Yingxin Liu Zuojun Wei |
| author_facet | Mengting Chen Yun Wang Limin Jiang Yuran Cheng Yingxin Liu Zuojun Wei |
| author_sort | Mengting Chen |
| collection | DOAJ |
| description | Allylic alcohols typically produced through selective hydrogenation of <i>α</i>,<i>β</i>-unsaturated aldehydes are important intermediates in fine chemical industry, but it is still a challenge to achieve its high selectivity transformation. Herein, we report a series of TiO<sub>2</sub>-supported CoRe bimetallic catalysts for the selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) using formic acid (FA) as a hydrogen donor. The resultant catalyst with the optimized Co/Re ratio of 1:1 can achieve an exceptional COL selectivity of 89% with a CAL conversion of 99% under mild conditions of 140 °C for 4 h, and the catalyst can be reused four times without loss of activity. Meanwhile, the Co<sub>1</sub>Re<sub>1</sub>/TiO<sub>2</sub>/FA system was efficient for the selective hydrogenation of various <i>α</i>,<i>β</i>-unsaturated aldehydes to the corresponding <i>α</i>,<i>β</i>-unsaturated alcohols. The presence of ReO<sub>x</sub> on the Co<sub>1</sub>Re<sub>1</sub>/TiO<sub>2</sub> catalyst surface was advantageous to the adsorption of C=O, and the ultrafine Co nanoparticles provided abundant hydrogenation active sites for the selective hydrogenation. Moreover, FA as a hydrogen donor improved the selectivity to <i>α</i>,<i>β</i>-unsaturated alcohols. |
| first_indexed | 2024-03-11T04:43:04Z |
| format | Article |
| id | doaj.art-fb5d3936ab76467e8d00ce977296ea3e |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T04:43:04Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-fb5d3936ab76467e8d00ce977296ea3e2023-11-17T20:37:31ZengMDPI AGMolecules1420-30492023-04-01288333610.3390/molecules28083336Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> CatalystMengting Chen0Yun Wang1Limin Jiang2Yuran Cheng3Yingxin Liu4Zuojun Wei5College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, ChinaKey Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, ChinaKey Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, ChinaAllylic alcohols typically produced through selective hydrogenation of <i>α</i>,<i>β</i>-unsaturated aldehydes are important intermediates in fine chemical industry, but it is still a challenge to achieve its high selectivity transformation. Herein, we report a series of TiO<sub>2</sub>-supported CoRe bimetallic catalysts for the selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) using formic acid (FA) as a hydrogen donor. The resultant catalyst with the optimized Co/Re ratio of 1:1 can achieve an exceptional COL selectivity of 89% with a CAL conversion of 99% under mild conditions of 140 °C for 4 h, and the catalyst can be reused four times without loss of activity. Meanwhile, the Co<sub>1</sub>Re<sub>1</sub>/TiO<sub>2</sub>/FA system was efficient for the selective hydrogenation of various <i>α</i>,<i>β</i>-unsaturated aldehydes to the corresponding <i>α</i>,<i>β</i>-unsaturated alcohols. The presence of ReO<sub>x</sub> on the Co<sub>1</sub>Re<sub>1</sub>/TiO<sub>2</sub> catalyst surface was advantageous to the adsorption of C=O, and the ultrafine Co nanoparticles provided abundant hydrogenation active sites for the selective hydrogenation. Moreover, FA as a hydrogen donor improved the selectivity to <i>α</i>,<i>β</i>-unsaturated alcohols.https://www.mdpi.com/1420-3049/28/8/3336cinnamaldehydecinnamyl alcoholCoRe bimetallic catalystselective hydrogenationformic acid |
| spellingShingle | Mengting Chen Yun Wang Limin Jiang Yuran Cheng Yingxin Liu Zuojun Wei Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst Molecules cinnamaldehyde cinnamyl alcohol CoRe bimetallic catalyst selective hydrogenation formic acid |
| title | Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst |
| title_full | Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst |
| title_fullStr | Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst |
| title_full_unstemmed | Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst |
| title_short | Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO<sub>2</sub> Catalyst |
| title_sort | highly efficient selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over core tio sub 2 sub catalyst |
| topic | cinnamaldehyde cinnamyl alcohol CoRe bimetallic catalyst selective hydrogenation formic acid |
| url | https://www.mdpi.com/1420-3049/28/8/3336 |
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