Highly selective catalysts for the hydrogenation of alkynols: A review

Chen, Xiao; Shi, Chuang; Liang, Changhai

doi:10.1016/s1872-2067(20)63773-1

Cited by 41 publications

(21 citation statements)

References 96 publications

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“…The semi‐hydrogenation of alkynols to cis ‐alkenols is known to depend on either electronic or steric effects exerted by the heterogeneous catalyst [11b] . In this context, we found that the hydrogenation reaction of 3‐hexyn‐1‐ol to cis ‐3‐hexen‐1‐ol is much more sensitive to the structure of the catalysts, compared to the reaction of 2‐butyne‐1,4‐diol to cis ‐2‐butene‐1,4‐diol ( i. e .…”

Section: Resultsmentioning

confidence: 99%

“…−1.02 eV for propene adsorption on the 111 surface of Pd), [11a] and the formation of a Pd‐hydride phase which fosters over‐hydrogenation to the corresponding saturated compound. In fact, DRIFT spectroscopic studies conducted on alkynol hydrogenation reactions, [7k,11b] along with DFT‐based calculations carried out on a Pd 9 (H) 2 model cluster surface confirmed a much faster carbon‐carbon triple than double bond hydrogenation, with an energy gap of approximately 50 kJ mol −1 [11c] . Hence the formation of Pd‐alloys with other metals such as Cu ( i. e .…”

Section: Introductionmentioning

confidence: 98%

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Selective Alkyne Semi‐Hydrogenation by PdCu Nanoparticles Immobilized on Stereocomplexed Poly(lactic acid)

et al. 2022

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Polymer-supported PdCu alloy nanoparticles with a palladium to copper atom ratio of 1 have been synthesized upon: (i) Coordination of palladium/copper acetate to 2,2'-bipyridineend functionalized poly(lactic acid) (PLA); (ii) Stereocomplexaation of PLA-based macrocomplexes of opposite stereochemistry, and (iii) metal reduction with hydrogen. The obtained supported PdCu nanoparticles were successfully applied in the semi-hydrogenation of industrially important alkynols, such as 3-hexyn-1-ol and 2-butyne-1,4-diol leading to the correspond-ing cis-alkenol in high selectivity (98 %) under mild reaction conditions (i. e. ethanol, T (25 °C), p(H 2 ) = 3 bar) in the absence of any further additive. From a comparison of the catalytic performance of supported PdCu nanoparticles with those of Pd and Cu, located in the same chemical environment, emerged a clear alloy effect (i. e. high chemoselectivity for the alkene at high alkyne conversion). Recycling experiments conducted with the PdCu-based catalyst proved the stability of the catalyst with time, even by its recovering in air atmosphere.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Selective Alkyne Semi‐Hydrogenation by PdCu Nanoparticles Immobilized on Stereocomplexed Poly(lactic acid)

et al. 2022

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“…The semi-hydrogenation of alkynols to enols also has attracted considerable attention in recent years. 44,62 Surprisingly, Pd 0.43 Co 1 /m-NC also exhibited excellent catalytic performance with high selectivity for the semi-hydrogenation of alkynols to enol products (Table 2, entries 1-8). Thus, the obtained Pd 0.43 Co 1 /m-NC catalyst exhibits excellent general applicability for the semi-hydrogenation of alkyl compounds.…”

Section: Paper Dalton Transactionsmentioning

confidence: 99%

Ultrafine PdCo bimetallic nanoclusters confined in N-doped porous carbon for the efficient semi-hydrogenation of alkynes

Zhan

Zhu

et al. 2022

Dalton Trans.

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“…However, the ability of aromatic molecules with reducible functional groups (such as C=C, NO 2 , C=O, etc.) to be activated or reduced is different [ 5 , 6 ]. How to accurately reduce the appointed groups is still a challenge.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Biomass Derived Pt-Ni Bimetallic Catalyst and Its Selective Hydrogenation for 4-Nitrostyrene

et al. 2022

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The hydrogenation products of aromatic molecules with reducible groups (such as C=C, NO2, C=O, etc.) are relatively critical intermediate compounds in fine chemicals, but how to accurately reduce only specific groups is still challenging. In this work, a bimetallic Pt-Ni/Chitin catalyst was prepared for the first time by using renewable biomass resource chitin as support. As the carrier, the chitin was constructed into porous nanofibrous microspheres through the sol-gel strategy, which was favorable for the adhesion of nano-metals and the exchange of reactive substances due to its large surface area, porous structure, and rich functional groups. Then the Pt-Ni/Chitin catalyst was applied to selective hydrogenation with the model substrate of 4-nitrostyrene. As the highly dispersed Pt-Ni NPs with abundant exposed active sites and the synergistic effect of bimetals, the Pt-Ni/Chitin catalyst could efficiently and selectively hydrogenate only NO2 or C=C with yields of ~99% and TOF of 660 h−1, as well as good stability. This utilization of biomass resources to build catalyst materials would be important for the green and sustainable chemistry.

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Highly selective catalysts for the hydrogenation of alkynols: A review

Cited by 41 publications

References 96 publications

Selective Alkyne Semi‐Hydrogenation by PdCu Nanoparticles Immobilized on Stereocomplexed Poly(lactic acid)

Selective Alkyne Semi‐Hydrogenation by PdCu Nanoparticles Immobilized on Stereocomplexed Poly(lactic acid)

Ultrafine PdCo bimetallic nanoclusters confined in N-doped porous carbon for the efficient semi-hydrogenation of alkynes

Fabrication of Biomass Derived Pt-Ni Bimetallic Catalyst and Its Selective Hydrogenation for 4-Nitrostyrene

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