JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Print ISSN : 0021-9592
Particle Engineering
Preparation of Nickel Nanoparticle-Deposited Silica Microsphere Catalysts
Yoshiki OkadaShoki MatsumotoTakuya Kinoshita
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2019 Volume 52 Issue 7 Pages 605-609

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Abstract

We prepared Ni nanoparticle-deposited silica (SiO2) microspheres using a method based on the collision of Ni nanoparticles, which were generated by hydrogen reduction of NiCl2, with SiO2 microspheres. SiO2 microspheres were heated in a gas-phase reactor to a temperature sufficiently high to soften their surfaces. Notably, when SiO2 microspheres were heated to temperatures higher than 973 K before collision with Ni nanoparticles, the nanoparticles showed no signs of sintering on the SiO2 microsphere surfaces during heat treatment at a high temperature of 1,073 K. In addition, we independently controlled the diameter and content of Ni nanoparticles on the SiO2 microspheres by changing NiCl2 evaporation temperature and NiCl2-carrier gas flow rate.

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© 2019 The Society of Chemical Engineers, Japan
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