SciELO - Scientific Electronic Library Online

vol.31 issue2Lead ions determination in ethanol fuel by differential pulse anodic stripping voltammetry using a carbon paste electrode modified with ion-exchange resin Amberlite IR120Prochloraz residue levels in ginger submitted to Sportak 450 CE" postharvest treatment author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Eclética Química

Print version ISSN 0100-4670On-line version ISSN 1678-4618


ARENAS, L. T. et al. A water soluble 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride silsesquioxane grafted onto Al/SiO2 surface: chromium adsorption study. Eclet. Quím. [online]. 2006, vol.31, n.2, pp.53-58. ISSN 0100-4670.

The water soluble material, 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride silsesquioxane (dabcosil silsesquioxane) was obtained. The dabcosil silsesquioxane was grafted onto a silica surface, previously modified with aluminum oxide. The resulting solid, dabcosil-Al/SiO2, presents 0.15 mmol of dabco groups per gram of material. The product of the grafting reaction was analyzed by infrared spectroscopy and N2 adsorption-desorption isotherms. The dabcosil-Al/SiO2 material was used as sorbent for chromium (VI) adsorption in aqueous solution.

Keywords : dabco; sol-gel; chromium (VI).

        · abstract in Portuguese     · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License