Titre:	Aplicação e modificação química da sílica gel obtida de areia
Autre(s) titre(s):	Aplication and chemical modification of silica-gel obtained from sand
Auteur(s):	Prado, Alexandre Gustavo Soares do Faria, Elaine Alves de Padilha, Pedro M.
Assunto::	Sílica Química experimental Adsorção
Date de publication:	2005
Editeur:	Sociedade Brasileira de Química
Référence bibliographique:	PRADO, Alexandre G. S.; FARIA, Elaine A.; Padilha, Pedro M. Aplicação e modificação química da sílica gel obtida de areia. Química Nova, v. 28, n. 3, p. 544-547, 2005. DOI: https://doi.org/10.1590/S0100-40422005000300030. Disponível em: https://www.scielo.br/j/qn/a/W56jy53HjpWCnG3BBwc4jRH/?lang=pt#. Acesso em: 10 ago. 2021.
Abstract:	The silica gel was obtained from sand and its surface was modified with POCl3 to produce Si-Cl bonds on the silica surface. Ethylenediamine was covalently bonded onto the chlorinated silica surface. The adsorption of the chlorides of divalent cobalt, nickel and copper was qualitatively studied to show that the bonding of ethylenediamine onto the silica gel surface produces a solid base capable of chelating metal ions from solution. The experiments illustrate the extraction of silica gel, its reactivity, the development of modified surfaces and its application in removing metal ions from water and are deigned for undergraduate inorganic chemistry laboratories.
metadata.dc.description.unidade:	Instituto de Química (IQ)
Licença::	Química Nova - This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY NC). Fonte: https://www.scielo.br/j/qn/a/W56jy53HjpWCnG3BBwc4jRH/?lang=pt. Acesso em: 10 ago. 2021.
DOI:	https://dx.doi.org/10.1590/S0100-40422005000300030
Collection(s) :	Artigos publicados em periódicos e afins

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