Advanced search
Start date
Betweenand
(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

RARE EARTHS: PERIODIC TABLE, DISCOVERY, EXPLORATION IN BRAZIL AND APPLICATIONS

Full text
Author(s):
Paulo C. de Sousa Filho [1] ; Ayla R. B.S. Galaço [2] ; Osvaldo A. Serra [3]
Total Authors: 3
Affiliation:
[1] Universidade Estadual de Campinas. Instituto de Química. Departamento de Química Inorgânica - Brasil
[2] Universidade de São Paulo. Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Departamento de Química - Brasil
[3] Universidade de São Paulo. Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Departamento de Química - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Química Nova; v. 42, n. 10, p. 1208-1224, 2020-02-14.
Abstract

In the ~150 years comprised between the discovery of yttrium (1794) and promethium (1947), the rare earth metals were an incomplete chapter and a stone in the shoe of the periodic classification of the chemical elements. This group of 17 elements with remarkable chemical similarity raised confusion on many brilliant scientists, including Mendeleev, and led to the consolidation of many theories in Chemistry, from atomic spectroscopy to quantum theory. Nowadays we know that the special properties of these elements arise from filling 4f orbitals, which results in unique spectroscopic, magnetic and catalytic behavior. Such properties make rare earths essential elements on optical devices, lasers, telecommunications and magnetic materials for sustainable energy. The importance of rare earths far exceeds the science and technology domains, reaching the same level of other strategic materials for energy and defense. Hence, this work presents a brief discussion about the historical path of the rare earth elements in the Periodic Table and about the exploration of these resources in Brazil, detailing some of the extractive activities since the 19th century and some perspectives for future activities concerning this group of elements in Brazil. (AU)

FAPESP's process: 18/07514-3 - Rare earths: catalysts, UV filters, recovery and MOFS/LOFS: Synthetic Procedures and potential aplications.
Grantee:Osvaldo Antonio Serra
Support Opportunities: Regular Research Grants
FAPESP's process: 17/11764-2 - Strategies on the synthesis of luminescent nanomaterials for the design of new multimodal optical sensors
Grantee:Paulo Cesar de Sousa Filho
Support Opportunities: Regular Research Grants