Selective hydrogenation of 3-Hexyn-1-ol with Pd nanoparticles synthesized via microemulsions

Montsch, Thomas; Heuchel, Moritz; Traa, Yvonne; Klemm, Elias

doi:10.1016/j.apcata.2017.03.038

Cited by 8 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Palladium (Pd) is a significant noble metal catalyst, which is widely applied in the processes of organic synthesis, such as hydrogenation, − dehydrogenation, , oxidation, , and carbon–carbon (C–C) cross-coupling reaction, , especially in catalytic hydrogenation.…”

Section: Introductionmentioning

confidence: 99%

Silica/Chitosan Core–Shell Hybrid-Microsphere-Supported Pd Catalyst for Hydrogenation of Cyclohexene Reaction

Chen

et al. 2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This paper presents a simple microfluidic method to prepare monodispersed palladium nanoparticles supported on silica/ chitosan core−shell hybrid microspheres. Because a large amount of −NH 2 provided by chitosan has a strong force with metal ions, Pd nanoparticles loaded on the microspheres kept monodispersed and had a mean diameter of only 2−3 nm. In addition, the core−shell structure indicating that the chitosan was mainly distributed on the shell of the microspheres results in that palladium is mainly loaded on the shell too, which can effectively reduce mass transfer distance between reactant and catalyst. Therefore, the supported Pd catalyst showed a superb catalytic performance through the hydrogenation of cyclohexene. Furthermore, silica/chitosan-supported catalyst can be reused many times without an obvious loss of its activity, and it will have promising application in other similar hydrogenation reactions.

show abstract

Section: Introductionmentioning

confidence: 99%

Silica/Chitosan Core–Shell Hybrid-Microsphere-Supported Pd Catalyst for Hydrogenation of Cyclohexene Reaction

Chen

et al. 2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…In the next step, we studied whether the formation of aggregates (as a fused collection of Pd nanoparticles) through thermal sintering can change the availability of the catalytic sites by blocking the nonselective corner and edge sites of Pd particles. In our previous study [15], Pd nanoparticles were supported on FDU-12 via different synthesis methods. It was shown that in a selective catalyst, Pd aggregates were produced by the addition of the microemulsion-prepared Pd agglomerates to the FDU-12 precursors, followed by thermal treatment at 823 K and further removal of structure-directing agents through a sintering process.…”

Section: Resultsmentioning

confidence: 99%

“…In our previous work [15], it was shown that when spherical cavities of a silica support (FDU-12) were impregnated by microemulsion-prepared Pd agglomerates having a rather broad distribution of particles (d P = 2 − 15 nm), these could not efficiently block the accessibility of the intermediate cis-hexenol species to the surface sites. Mainly 1-hexanol was obtained as a final product during the catalytic hydrogenation of 3-hexyn-1-ol.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Long-Term Kinetics of Pd Nanoparticles Prepared from Microemulsions and the Lindlar Catalyst for Selective Hydrogenation of 3-Hexyn-1-ol

Tari,

Hertle,

Wang

et al. 2024

Catalysts

Self Cite

View full text Add to dashboard Cite

The effect of non-saturated corner and edge sites of Pd particles on the long-term selectivity of cis-3-hexen-1-ol in the hydrogenation of 3-hexyn-1-ol was studied in this work. Non-supported Pd agglomerates were synthesized through the microemulsion synthesis route and used at nalkynol/APd ratios between 0.08 and 21 mol/m2 for the catalytic conversion of 3-hexyn-1-ol for 20 h. The selectivity of the cis-hexenol product increased by reducing the quantity of Pd catalytic sites (increasing the nalkynol/APd ratio) without introducing any modifier or doping agent to poison the nonselective sites. Then, Pd aggregates with fused primary particles and, thus, fewer corner and edge sites were produced through thermal sintering of the agglomerates at 473–723 K. By comparing the catalytic performance of the agglomerates and aggregates, it was observed that at a rather similar kinetic behavior (99.99% conversion and 85–89% selectivity to cis-hexenol), the sintered aggregates could stay selective despite a catalytic surface area about seven times larger. This emphasizes the role of low-coordinated edge and corner sites on the final selectivity of the cis product and demonstrates that thermal sintering allows the number of non-selective sites to be reduced without any need for toxic or organic doping agents or modifiers.

show abstract

“…43 The effect of the thermal activation of Pd 3 NCs on carbon supports on the catalytic activity was examined for the hydrogenation of 3-hexyn-1-ol (HY). HY can be converted to different hydrogenated products due to the presence of several competitive mechanistic pathways, 47,48 thus it is an interesting substrate to investigate the thermally treated Pd NCs on the basis of their stereo-as well as chemo-selectivity. The catalytic performances of the samples in this reaction are shown in Table 2.…”

Section: Catalysis Science and Technologymentioning

confidence: 99%

Following the temperature-induced activation of carbon-supported trigonal Pd₃ nanoclusters for catalysis

Singh,

Sulaiman,

Mahwar

et al. 2024

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Selective hydrogenation of 3-Hexyn-1-ol with Pd nanoparticles synthesized via microemulsions

Cited by 8 publications

References 32 publications

Silica/Chitosan Core–Shell Hybrid-Microsphere-Supported Pd Catalyst for Hydrogenation of Cyclohexene Reaction

Silica/Chitosan Core–Shell Hybrid-Microsphere-Supported Pd Catalyst for Hydrogenation of Cyclohexene Reaction

Investigating the Long-Term Kinetics of Pd Nanoparticles Prepared from Microemulsions and the Lindlar Catalyst for Selective Hydrogenation of 3-Hexyn-1-ol

Following the temperature-induced activation of carbon-supported trigonal Pd₃ nanoclusters for catalysis

Contact Info

Product

Resources

About

Selective hydrogenation of 3-Hexyn-1-ol with Pd nanoparticles synthesized via microemulsions

Cited by 8 publications

References 32 publications

Silica/Chitosan Core–Shell Hybrid-Microsphere-Supported Pd Catalyst for Hydrogenation of Cyclohexene Reaction

Silica/Chitosan Core–Shell Hybrid-Microsphere-Supported Pd Catalyst for Hydrogenation of Cyclohexene Reaction

Investigating the Long-Term Kinetics of Pd Nanoparticles Prepared from Microemulsions and the Lindlar Catalyst for Selective Hydrogenation of 3-Hexyn-1-ol

Following the temperature-induced activation of carbon-supported trigonal Pd3 nanoclusters for catalysis

Contact Info

Product

Resources

About

Following the temperature-induced activation of carbon-supported trigonal Pd₃ nanoclusters for catalysis