Síntese hidrotermal de sodalita básica a partir de um rejeito de caulim termicamente ativado


Autoria(s): Paz,Simone Patrícia Aranha da; Angélica,Rômulo Simões; Neves,Roberto de Freitas
Data(s)

01/01/2010

Resumo

Basic sodalite was successfully synthesized by hydrothermal method using kaolin waste as source of Aluminum and Silicon. This waste is mainly composed by kaolinite and is produced in large amount by kaolin processing industries for paper coating from the Amazon region. Initially, the waste has been calcined at 700 ºC for 2 h and then reacted with the following solutions: Na2CO3 and mixture of Na2CO3 + NaOH to 150 ºC with autogenous pressure for 24 h. The raw materials and transformed materials were characterized by XRD, FTIR and SEM. In both studied media, well-crystallized, basic sodalite was the only phase synthesized, while in the literature usually a mixture of zeolites is obtained.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000300017

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.33 n.3 2010

Palavras-Chave #synthesis #basic sodalite #kaolin waste
Tipo

journal article