Chemoselective hydrogenation of cinnamaldehyde over amorphous coordination polymer supported Pt-Co bimetallic nanocatalyst

Tang, Yi; Li, Hongkun; Cui, Kuncheng; Xia, Yuguo; Yuan, Guoyuan; Feng, Jian; Xiong, Wei

doi:10.1016/j.cplett.2022.139683

Cited by 7 publications

(2 citation statements)

References 45 publications

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“…However, an excessive catalyst dosage reduced the selectivity of COL increased the excessive hydrogenation by-product HCOL and other by-products. As expected, our rationally designed Co 1 Re 1 /TiO 2 catalyst exhibited higher activity and selectivity for the hydrogenation of CAL to COL compared with TiO 2 , Co/TiO 2 , and Re/TiO 2 catalysts (Table S4), and it showed significant advantages compared with the relevant literature (Table S5) [24,27,30,[32][33][34][35]45,[51][52][53][54][55][56][57][58][59][60][61]. The results of the selective hydrogenation of CAL to COL suggest that the synergistic effect among the TiO 2 support and Co and Re metals is the main reason for the enhanced performance of the Co 1 Re 1 /TiO 2 catalyst.…”

Section: Effects Of Reaction Conditionssupporting

confidence: 72%

“…The following supporting information can be downloaded at: https://www.mdpi.com/article/10.3390/molecules28083336/s1, Table S1: Hydrogenation of CAL over different Co-based catalysts; Table S2: Co 2p and Re 4f dispersion on different catalysts; Table S3: Hydrogenation of CAL to COL using different hydrogen donors; Table S4: Hydrogenation of CAL to COL over various catalysts using formic acid as the hydrogen donor; Table S5: Hydrogenation of CAL to COL over various catalytic systems; Table S6: Metal contents in fresh and spent Co 1 Re 1 /TiO 2 catalyst measured by ICP-OES; Table S7: Labels and calculated metal contents of catalysts; Figure S1: XRD patterns of fresh and spent Co 1 Re 1 /TiO 2 ; Figure S2: GC/MS spectra of substrate and products in the hydrogenation of COL; Figure S3: GC/MS spectra of the main products in the hydrogenation of other α,β-unsaturated aldehydes. References [24,27,30,32,33,[33][34][35]45,[51][52][53][54][55][56][57][58][59][60][61] are cited in the supplementary materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

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Highly Efficient Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over CoRe/TiO2 Catalyst

et al. 2023

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Allylic alcohols typically produced through selective hydrogenation of α,β-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 TiO2-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 Co1Re1/TiO2/FA system was efficient for the selective hydrogenation of various α,β-unsaturated aldehydes to the corresponding α,β-unsaturated alcohols. The presence of ReOx on the Co1Re1/TiO2 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 α,β-unsaturated alcohols.

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