Fibrous bimetallic silver palladium and ruthenium palladium nanocrystals exhibit an exceptionally high active catalytic process in acetone hydrogenation

E. R. Mawarnis, Ali Umar Akrajas

Research output: Contribution to journalArticle

Abstract

Highly dynamic catalytic reaction requires synergetic process of active adsorption and desorption of reactants on the catalyst's surface. This can be measured from the product yield and the catalyst's lifetime during the catalysis process. In this study, we discovered that bimetallization of the well-known Pd catalyst with Ag or Ru atoms modifies its crystal growth orientation and catalytic properties, leading to the generation of large area (due to fibrous structure) and unusual surface physicochemical properties for a highly energetic catalytic reaction in a model of a catalytic reaction, that is, acetone hydrogenation to produce isopropanol. In typical process, the kinetic rate of the reaction can be up to as high as 5.5 × 10−2 and 6 × 10−3 for AgPd and RuPd nanocatalysts, respectively, which are equivalent to the turnover frequency as high as of 2.3 × 102 s−1 and 1.4 × 102 s−1 for AgPd and RuPd nanocatalysts, respectively. This performance is much higher than the pristine Pd nanocatalyst and other nanocatalysts reported recently. The synthesis and the mechanism of catalytic properties enhancement will be discussed.

Original languageEnglish
Article number100178
JournalMaterials Today Chemistry
Volume14
DOIs
Publication statusPublished - 1 Dec 2019

Fingerprint

Ruthenium
Palladium
Acetone
Silver
Nanocrystals
Hydrogenation
Catalysts
2-Propanol
Crystallization
Crystal growth
Crystal orientation
Catalysis
Surface properties
Desorption
Adsorption
Atoms
Kinetics

Keywords

  • AgPd
  • Bimetallic nanocatalyst
  • Hydrogenation reaction
  • Nanocatalyst
  • Nanofibrous
  • RuPd

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

Cite this

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abstract = "Highly dynamic catalytic reaction requires synergetic process of active adsorption and desorption of reactants on the catalyst's surface. This can be measured from the product yield and the catalyst's lifetime during the catalysis process. In this study, we discovered that bimetallization of the well-known Pd catalyst with Ag or Ru atoms modifies its crystal growth orientation and catalytic properties, leading to the generation of large area (due to fibrous structure) and unusual surface physicochemical properties for a highly energetic catalytic reaction in a model of a catalytic reaction, that is, acetone hydrogenation to produce isopropanol. In typical process, the kinetic rate of the reaction can be up to as high as 5.5 × 10−2 and 6 × 10−3 for AgPd and RuPd nanocatalysts, respectively, which are equivalent to the turnover frequency as high as of 2.3 × 102 s−1 and 1.4 × 102 s−1 for AgPd and RuPd nanocatalysts, respectively. This performance is much higher than the pristine Pd nanocatalyst and other nanocatalysts reported recently. The synthesis and the mechanism of catalytic properties enhancement will be discussed.",
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AU - Akrajas, Ali Umar

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N2 - Highly dynamic catalytic reaction requires synergetic process of active adsorption and desorption of reactants on the catalyst's surface. This can be measured from the product yield and the catalyst's lifetime during the catalysis process. In this study, we discovered that bimetallization of the well-known Pd catalyst with Ag or Ru atoms modifies its crystal growth orientation and catalytic properties, leading to the generation of large area (due to fibrous structure) and unusual surface physicochemical properties for a highly energetic catalytic reaction in a model of a catalytic reaction, that is, acetone hydrogenation to produce isopropanol. In typical process, the kinetic rate of the reaction can be up to as high as 5.5 × 10−2 and 6 × 10−3 for AgPd and RuPd nanocatalysts, respectively, which are equivalent to the turnover frequency as high as of 2.3 × 102 s−1 and 1.4 × 102 s−1 for AgPd and RuPd nanocatalysts, respectively. This performance is much higher than the pristine Pd nanocatalyst and other nanocatalysts reported recently. The synthesis and the mechanism of catalytic properties enhancement will be discussed.

AB - Highly dynamic catalytic reaction requires synergetic process of active adsorption and desorption of reactants on the catalyst's surface. This can be measured from the product yield and the catalyst's lifetime during the catalysis process. In this study, we discovered that bimetallization of the well-known Pd catalyst with Ag or Ru atoms modifies its crystal growth orientation and catalytic properties, leading to the generation of large area (due to fibrous structure) and unusual surface physicochemical properties for a highly energetic catalytic reaction in a model of a catalytic reaction, that is, acetone hydrogenation to produce isopropanol. In typical process, the kinetic rate of the reaction can be up to as high as 5.5 × 10−2 and 6 × 10−3 for AgPd and RuPd nanocatalysts, respectively, which are equivalent to the turnover frequency as high as of 2.3 × 102 s−1 and 1.4 × 102 s−1 for AgPd and RuPd nanocatalysts, respectively. This performance is much higher than the pristine Pd nanocatalyst and other nanocatalysts reported recently. The synthesis and the mechanism of catalytic properties enhancement will be discussed.

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