Effects of different treatments on purity of silica from soluble sodium silicate
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/01/2000
|
Resumo |
Noncrystalline silica was obtained with low iron, sodium, and nitrate ions concentrations from soluble sodium silicate (water glass) and nitric acid solution. Extractions with nitric acid solution and/or deionized water and/or dialysis were carried out to eliminate soluble metal ions. Products were dried in a microwave oven and characterized by chemical analysis, XRD, and IR. Dialysis seems to be the best treatment for the elimination of sodium and nitrate ions. Silica purified by nitric acid and water extractions followed by dialysis yields the purest silica sample. |
Formato |
287-298 |
Identificador |
http://dx.doi.org/10.1081/SS-100100157 Separation Science and Technology. Philadelphia: Taylor & Francis Inc., v. 35, n. 2, p. 287-298, 2000. 0149-6395 http://hdl.handle.net/11449/35596 10.1081/SS-100100157 WOS:000084766000008 |
Idioma(s) |
eng |
Publicador |
Taylor & Francis Inc |
Relação |
Separation Science and Technology |
Direitos |
closedAccess |
Palavras-Chave | #silica #soxhlet extraction #dialysis |
Tipo |
info:eu-repo/semantics/article |