Morfologia e cristalinidade de hidroxicarbonato de zinco obtido via precipitação homogênea: influência dos ânions cloreto e nitrato

Química Nova

Fernando Aparecido Sigoli¹  Ana Maria Pires¹  Elizabeth Berweth Stucchi¹  Miguel Jafelicci Jr¹  Marian Rosaly Davolos¹ 

[1] ,Universidade Estadual Paulista Instituto de Química Araraquara SP

关键词: zinc hydroxide carbonate;    homogeneous precipitation;    morphology;    spherulites;   

DOI  :  10.1590/S0100-40422000000500011

来源: SciELO

【 摘 要 】

The effects of chloride and nitrate anions and their respective concentrations, as well as urea presence, on solid phase morphologies were investigated. Zinc hydroxide carbonate was prepared by aging diluted zinc salt solution in presence of urea at 90ºC. Samples were identified by X-ray powder diffractograms showing the characteristic patterns of hydrozincite. The crystallinity was correlated with the concentrations of reagents. Spherulitic-type aggregates and single acicular particles were obtained from diluted chloride and nitrate solutions while porous aggregates of uniform size were formed from solutions with high chloride and urea concentrations.

【 授权许可】

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