928-68-7Relevant articles and documents
Tuning nano-nickel selectivity with tin in flow hydrogenation of 6-methyl-5-hepten-2-one by surface organometallic chemistry modification
Zienkiewicz-Machnik, Ma?gorzata,Goszewska, Ilona,?r?bowata, Anna,Kubas, Adam,Giziński, Damian,S?owik, Grzegorz,Matus, Krzysztof,Lisovytskiy, Dmytro,Pisarek, Marcin,Sá, Jacinto
, p. 38 - 44 (2018)
Chemoselective flow hydrogenation of 6-methyl-5-hepten-2-one was performed over nano-nickel catalysts. The parent catalyst composed solely of nickel nanoparticles grafted on the polymeric resin exhibited high activity and selectivity towards C[dbnd]C bond saturation but its modification with small quantities of tin significantly increased its ability to perform C[dbnd]O bond hydrogenation. The post-synthetic modification of the parent catalyst was achieved by surface organometallic chemistry approach and performed in the same flow micro-reactor, which was used for the catalytic studies, providing a methodology for online modification of parent catalysts.
Chemoselective Hydrogenation of Olefins Using a Nanostructured Nickel Catalyst
Klarner, Mara,Bieger, Sandra,Drechsler, Markus,Kempe, Rhett
supporting information, p. 2157 - 2161 (2021/05/21)
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 protected 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.
Tuning Nano-Nickel Catalyst Hydrogenation Aptitude by On-the-Fly Zirconium Doping
Zienkiewicz-Machnik, Ma?gorzata,Goszewska, Ilona,Giziński, Damian,?r?bowata, Anna,Kuzmowicz, Katarzyna,Kubas, Adam,Matus, Krzysztof,Lisovytskiy, Dmytro,Pisarek, Marcin,Jacinto
, p. 3132 - 3138 (2020/05/06)
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.
