Synthesis of Different Ruthenium Nickel Bimetallic Nanostructures and an Investigation of the Structure–Activity Relationship for Benzene Hydrogenation to Cyclohexane

Abstract

The catalytic properties of catalysts are generally highly dependent on their nanostructures in most heterogeneous catalytic reactions. Therefore, to acquire targeted catalytic activity, selectivity, and stability, catalysts with a specific nanostructure should be designed and synthesized. Herein, Ru‐Ni bimetallic nanoparticles with different nanostructures, Ru‐Ni alloy, Ru@Ni, and Ru clusters‐on‐Ni on carbon, have been synthesized by annealing Ru‐Ni/C in flowing N2+10 % H2 at different temperatures. The various nanostructures of the Ru‐Ni bimetallic nanoparticles have been characterized and their catalytic behaviors were evaluated using benzene hydrogenation to cyclohexane. The relationship between the Ru‐Ni bimetallic nanostructures and their catalytic performance is presented. It was found that Ru‐Ni alloy/C and Ru clusters‐on‐Ni/C are much more active than Ru@Ni/C. This study also provides a simple method to design and control the nanostructures of the Ru‐Ni bimetallic nanoparticles.

Ultrafine Nanoparticle‐Supported Ru Nanoclusters with Ultrahigh Catalytic Activity

“…Ni/Ni(OH) 2 /C was prepared at room temperature (RT) via a hydrazine hydrate reduction method, using carbon black as support . Ni/NiO/C was gained after Ni/Ni(OH) 2 /C calcined in N 2 at 380 °C for 3 h. The Ni (Ni element) loading was 2.48 wt%.…”

Supported nanometric platinum–nickel catalysts for solvent-free hydrogenation of tetralin

“…The Pt-Ni/AC sample was prepared by a galvanic replacement reaction with 0.5 g the as-prepared nano-Ni catalysts and an aqueous H 2 PtCl 6 ·6H 2 O solution (50 mL, 1.55 mM) at 30°C for another 12 h [13][14][15][16][17]. The loading of Pt on the nano-Ni catalysts was 2.8 wt.%.…”

Structural Isomerism of Two Ce‐BTC for Fabricating Pt/CeO2 Nanorods toward Low‐Temperature CO Oxidation

“…catalytically active nanoparticles (NPs) to enhance their catalytic properties based on the synergistic effect principle. [10] For instance, Jiang et al have exploited ZIF-8 as a support for loading Au NPs for gasphase CO oxidation reaction with 50% CO conversion are around 170 °C. [11] Although MOFs are less active in catalysis as compared to the NPs, it is well established that the coordination environment in MOFs is also critically important to the catalytic performance.…”

“…[ 9 ] Regarding the catalytic applications, many reports have focused on the composite catalysts by functionalization of MOFs with various catalytically active nanoparticles (NPs) to enhance their catalytic properties based on the synergistic effect principle. [ 10 ] For instance, Jiang et al have exploited ZIF‐8 as a support for loading Au NPs for gas‐phase CO oxidation reaction with 50% CO conversion are around 170 °C. [ 11 ]…”