Evidence of aluminum oxide monolayer formation on a silica gel surface using grafting reactions

Química Nova

Baibich, Ione M.¹  Benvenutti, Edilson V.¹  Universidade Federal do Rio Grande do Sul, Porto Alegre¹  Cónsul, Julia M. D.¹  Thiele, Daniel¹ 

关键词: grafting;    atomic dispersion;    surface synthesis.;   

DOI  :  10.1590/S0100-40422005000300005

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Aluminum oxide was dispersed on a commercial silica gel surface, using successive grafting reactions. The reaction products were characterized by N2 adsorption-desorption isotherms, scanning electron microscopy and infrared spectroscopy. The progressive incorporation of aluminum, up to 5.5% (w/w), does not produce agglomeration of alumina, since changes in the original pore size distribution of the silica matrix were not observed. The aluminum oxide covers homogeneously the silica surface.

【 授权许可】

Unknown