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Characterization of Al-Zr, Al-Hf and Al-Ce-pillared vermiculites by X-ray photoelectron spectroscopy
X-ray photoelectron spectroscopy was used to establish the relative concentration and the chemical environment of modifying species in a series of vermiculites pillared with mixed precursors of Al-Zr, Al-Hf and Al-Ce. The ...
Fenton-like processes and adsorption using iron oxide-pillared clay with magnetic properties for organic compound mitigation
(Springer, 2015-01-01)
In this work, a new step was added to the classic route of iron-pillared clay obtention, resulting in a material with both magnetic and oxidative properties. The saturation of the material surface intercalated with trinuclear ...
Modelagem bidimensional de hidrofobicidade e superhidrofobicidade em superfícies de pilares
(Universidade Federal de Santa MariaBRFísicaUFSMPrograma de Pós-Graduação em Física, 2010-08-02)
In this work we investigate the use of the Potts Cellular Model in simulations of the water droplets on flat hydrophobic and pillarlike surfaces surrounded by gas.
Eight tests were chosen to validate the model, based on ...
Catalytic oxidation of aromatic VOCs with Cr or Pd-impregnated Al-pillared bentonite: Byproduct formation and deactivation studies
(Elsevier Science, 2008-05)
The catalytic behavior of chromium and palladium-impregnated Al-pillared bentonite for the oxidation of aromatic VOCs, i.e. chlorobenzene or xylene, was investigated. The Cr-impregnated bentonite showed high activity for ...
Síntese e caracterização de argilas pilarizadas com pilares mistos Al/Co
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em QuímicaFísico-Química; Química, 2014-05-22)
Two pillaring methods were tested to synthesize pillared clays containing mixed Al/Co
pillars. Using the first method, based on the traditional procedure, were obtained materials
containing different Co concentrations: 10, ...
Pillaring cetyltrimethylammonium-magadiite: a stepwise method to mesoporous materials with controlled pores sizes and distribution
(E Schweizerbartsche VerlagsStuttgartAlemanha, 2012)
Processos redoxes de ferro em argilominerais: caracterização, métodos de quantificação, especiação e modificações estruturais
(Universidade Federal de Minas GeraisUFMG, 2007-02-26)
Redox processes within clays and clay minerals influence significantly in different physical and chemical properties in soils and sediments, mainly which ones related to the chemical interaction between solid and solution ...