Tuning nano-nickel selectivity with tin in flow hydrogenation of 6-methyl-5-hepten-2-one by surface organometallic chemistry modification

Zienkiewicz-Machnik, Małgorzata; Goszewska, Ilona; Śrębowata, Anna; Kubas, Adam; Giziński, Damian; Słowik, Grzegorz; Matus, Krzysztof; Lisovytskiy, Dmytro; Pisarek, Marcin; Sá, Jacinto

doi:10.1016/j.cattod.2017.08.062

Cited by 10 publications

(25 citation statements)

References 56 publications

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“…Two modifications were carried out, namely (i) particle accretion and (ii) Sn doping . Both modifications were achieved via surface organometallic chemistry (SOMC) routes.…”

Section: Selective Surface Modificationmentioning

confidence: 99%

On‐the‐fly Catalyst Modification: Strategy to Improve Catalytic Processes Selectivity and Understanding

Sá

Medlin

2019

ChemCatChem

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Hydrogenation is a quintessential process to the chemical industry. It is heavily involved in organic synthesis and fuel production, among other processes. Preferentially the reactions are carried out with heterogeneous catalysts and when possible in flow mode. Herein, we provide a retrospective on selective surface modification of catalysts for improved selectivity and understanding of catalytic reactivity. In addition, we provide a prospectus for an emerging strategy of carrying out surface modification on-the-fly to produce novel catalysts in a fast and reproducible way and to understand catalytic phenomena.

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“…Two modifications were carried out, namely (i) particle accretion and (ii) Sn doping . Both modifications were achieved via surface organometallic chemistry (SOMC) routes.…”

Section: Selective Surface Modificationmentioning

confidence: 99%

On‐the‐fly Catalyst Modification: Strategy to Improve Catalytic Processes Selectivity and Understanding

Sá

Medlin

2019

ChemCatChem

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“…Nano‐Ni parent catalyst (NiTSNH 2 ) was obtained at room temperature conditions, during one‐pot, two‐step synthesis where Ni NPs were grafted on the polymeric resin terminated with amino groups (TentaGel‐S‐NH 2 , TSNH 2 ) . The metal content in NiTSNH 2 was found to be 0.68 % wt . For the modification of the parent catalyst with Zr we applied the procedure adopted to synthesize the Ni−Sn catalyst .…”

Section: Resultsmentioning

confidence: 99%

“…Our research efforts have been so far focused on hydrogenation reactions catalysed by nano‐Ni catalysts supported on inert polymeric resins and their alteration via on‐the‐fly surface modification to increase the understanding of the processes and improve catalytic performance. We reported on the impact of particle accretion and Sn‐doping on the activity and selectivity in the hydrogenation of α, β – unsaturated aldehydes and ketones. The obtained results showed that on‐the‐fly modification offers a simple workflow, cost‐effective and adaptable strategy for process intensification and optimization.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Sn‐doping of parent Ni catalyst decreased the stability of the adsorption complex and a switch of the thermodynamic order of the favoured products . Spurred by these findings, we decided to extend our studies on the hydrogenation of 6‐methyl‐5‐hepten‐2‐one to nano‐Ni surface modification with zirconium . Zirconium was selected as dopant due to its difference in the electronic structure including electronegativity compared to Ni and Sn, which allows exploring both, the geometric and electronic effects on hydrogenation of 6‐methyl‐5‐hepten‐2‐one to produce fine chemicals .…”

Section: Introductionmentioning

confidence: 99%

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Tuning Nano‐Nickel Catalyst Hydrogenation Aptitude by On‐the‐Fly Zirconium Doping

et al. 2020

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The effect of nano‐Ni catalyst post‐synthetic Zr‐modification on hydrogenation reaction of 6‐methyl‐5‐hepten‐2‐one was investigated in a fixed bed continuous‐flow micro‐reactor to produce fine chemicals. The catalytic performance revealed that Zr‐doping achieved by surface organometallic chemistry approach modifies the natural aptitude of nickel to hydrogenate C=C bond, since the addition of small quantities of zirconium significantly increased the amount of unsaturated and saturated alcohols formed in 6‐methyl‐5‐hepten‐2‐one hydrogenation. Quantum chemical calculations revealed a stronger interaction between Zr←O=C that promotes the formation of C=C semihydrogenation product and enhances the probability of complete hydrogenation. The on‐the‐fly strategy presented herein enables for rapid optimization and understanding of catalytic processes.

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Chemoselective Hydrogenation of Olefins Using a Nanostructured Nickel Catalyst

Klarner

Bieger

Drechsler

et al. 2021

Zeitschrift anorg allge chemie

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The selective hydrogenation of functionalized olefins is of great importance in the chemical and pharmaceutical industry. Here, we report on a nanostructured nickel catalyst that enables the selective hydrogenation of purely aliphatic and functionalized olefins under mild conditions. The earth-abundant metal catalyst allows the selective hydrogenation of sterically pro-tected olefins and further tolerates functional groups such as carbonyls, esters, ethers and nitriles. The characterization of our catalyst revealed the formation of surface oxidized metallic nickel nanoparticles stabilized by a N-doped carbon layer on the active carbon support.

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Tuning nano-nickel selectivity with tin in flow hydrogenation of 6-methyl-5-hepten-2-one by surface organometallic chemistry modification

Cited by 10 publications

References 56 publications

On‐the‐fly Catalyst Modification: Strategy to Improve Catalytic Processes Selectivity and Understanding

On‐the‐fly Catalyst Modification: Strategy to Improve Catalytic Processes Selectivity and Understanding

Tuning Nano‐Nickel Catalyst Hydrogenation Aptitude by On‐the‐Fly Zirconium Doping

Chemoselective Hydrogenation of Olefins Using a Nanostructured Nickel Catalyst

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