Progress of Cryogenics and Isotopes Separation

Newsflash

The National Conference with international participation on New Cryogenic and Isotope Technologies for Energy and Environment - EnergEn 2018 is organized by the National Research-Development Institute for Cryogenic and Isotopic Technologies - ICSI Rm. Valcea with the scientific participation of the University of Pitesti and the University of Craiova and will be held at Baile Govora, in 2018.

ENVIRONMENTALLY FRIENDLY METHODS FOR HIGH QUALITY LANTHANUM COBALTITE PEROVSKITE CATALYSTS SYNTHESIS Print

 

ENVIRONMENTALLY FRIENDLY METHODS FOR HIGH QUALITY LANTHANUM COBALTITE PEROVSKITE CATALYSTS SYNTHESIS


Stanica Enache1*, Mirela Dragan1*, Amalia Soare1, Konstantin Petrov1,2, Mihai Varlam1



 

1National Research and Development Institute for Cryogenics and Isotopic Technologies – ICSI Rm. Valcea, 4 Uzinei Street, P.O. Box Râureni 7, 240050, Rm. Valcea, Romania

2Acad. Evgeni Budevski Institute of Electrochemistry and Energy Systems, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl.10, 1113 Sofia, Bulgaria






ABSTRACT


In this work, two dry and direct routes for LaCoO3 perovskite synthesis are presented: solid-state synthesis and high-energy ball milling. These synthesis routes are clean and do not make use of materials other than the reaction precursors. The following methods for physical characterization have been applied: X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive electron diffraction (EDS).

The solid-state synthesised powders are polycrystalline within a single-phase, proving that the preparation method is efficient to produce LaCoO3 perovskites. The high-energy ball-milling method produces finer powders. The heat-treatment of these powders leads to high crystalline quality. Both powders have the same stoichiometry.
The developed methods have lower preparation temperatures, simpler synthesis protocols and less expensive precursors, leading to energy and price savings.
Keywords: perovskite powders, solid-state synthesis, high energy ball-milling.


________________________


*Corresponding authors: Stanica Enache, Mirela Dragan, E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it