Selectivation of nickel catalysts : controlled-site modification and characterization
type: Dataset
description: The aim of the present study is to prepare silica-supported Ni-X bimetallic catalysts, tocharacterize them, and to compare their catalytic activity in the hydrogenation of styrene, as well as their selectivity in the hydrogenation of the styrene’s olefinic double bond instead of the hydrogenation of the aromatic ring. The element X is grafted in a controlled way on the supported nickel particles, and is chosen according to its electronegativity, which is eitherlower (Zr), or equivalent (Sn), or higher (Au) than the electronegativity of Ni, in order to study the geometrical and/or electronic effects due to the doping of Nickel. Among the prepared samples, the Ni-Au/SiO2 catalyst has exhibited high activity and high selectivity in the hydrogenation of styrene into ethylbenzene, which makes the doping of Ni by Au apromising alternative for PyGas selective hydrogenation catalysts.
identifier: NNT: 2009LYO10304
issued: 2026-05-23T05:20:45.093330
language: fr
modified: 2026-05-23T05:20:45.093335
contact point: Organization
  fn: CCSD
keyword: bimetallic-catalyst
keyword: catalyseur-bimetallique
keyword: chimothechemical-sciencesother
keyword: hydrogenation-selective
keyword: infoeu-reposemanticsdoctoralthesis
keyword: nickel
keyword: selective-hydrogenation
keyword: styrene
keyword: theses
landing page: https://theses.hal.science/tel-00683589

Selectivation of nickel catalysts : controlled-site modification and characterization
type: Distribution
format: HTML
issued: 2026-05-23T05:20:45.099567
modified: 2026-05-23T05:20:45.060569
access URL: https://theses.hal.science/tel-00683589

test_moissonnage_selune
type: Agent