Comparação estrutural entre amostras de materiais tipo hidrotalcita obtidas a partir de diferentes rotas de síntese

Química Nova

Luciano H. Chagas²  Stephane B. P. De Farias²  Alexandre A. Leitão²  Renata Diniz²  Sandra S. X. Chiaro¹  Nivaldo L. Speziali¹  Heitor A. De Abreu¹  Wagner N. Mussel¹ 

[1] ,Universidade Federal de Juiz de Fora Departamento de Química Juiz de Fora MG ,Brasil

关键词: layered double hydroxides;    catalysts supports;    Rietveld refinement;   

DOI  :  10.1590/S0100-40422012000600008

来源: SciELO

【 摘 要 】

Three samples of hydrotalcite-like materials (HTC) were synthesized and their structural characteristics were compared with two HTCs obtained commercially. Thermal analyses, FT-IR, PXRD and textural analyses were used to investigate the structural differences between commercial and synthetic samples. Particularly, the memory effect was observed at temperature higher than 600 ºC. The Rietveld refinements were obtained with expressive accuracy and the statistical parameters of goodness of fit are quite satisfactory. In conclusion, the procedures adopted in synthesis of HTC produced crystalline materials with high surface area materials.

【 授权许可】

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