In:
Current Nanomaterials, Bentham Science Publishers Ltd., Vol. 5, No. 1 ( 2020-06-25), p. 79-90
Abstract:
Deposition of palladium nanoparticles from colloidal
solution on various supports produces palladium catalysts with a predetermined size and concentration of the palladium nanoparticles, which allows to study the
nanoparticle size effects and support influence on palladium catalytic properties. Objective: The goal of the present work was the development of a preparation
method of systems supported on γ-Al2O3 palladium nanoparticles with a controlled size and determination of their thermal stability in oxidizing and reducing
atmospheres. Methods: We demonstrated the preparation of Pd/γ-Al2O3 composite by
precipitation of the size-controlled palladium nanoparticles with a narrow size distribution from colloidal solution. The composites were characterized by X-ray
diffraction (XRD), and transmission electron microscope (TEM) methods. Result: The size and size distribution of the nanoparticles supported on γ-Al2O3
were found to be increasing upon precipitation due to strong Pd/γ-Al2O3 interaction. A significant enlargement of the supported nanoparticles occured at 300°C. The
aggregation of the nanoparticles was observed at temperatures above 500°C resulting in an increase in their size. Conclusion: Our findings are not only applicable for the preparation of a model
Pd supported on the γ-Al2O3 catalyst but could be applicable to the designing of the Pd-containing catalyst for important industrial high-temperature processes.
Type of Medium:
Online Resource
ISSN:
2405-4615
DOI:
10.2174/2405461505666191220114659
Language:
English
Publisher:
Bentham Science Publishers Ltd.
Publication Date:
2020
