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Hydrogen production by ethanol steam reforming over Rh nanoparticles supported on lanthana/silica systems
(Elsevier Science, 2014-06)
The aim of the present work was to investigate Rh nanoparticle catalysts supported on La2O3?SiO2, with different contents of La2O3, in the ethanol steam reforming reaction. The size of Rh particles was determined by both ...
Nucleation and crystallization of titania nanoparticles in silica titania planar waveguides: A study by low frequency Raman scattering
(2004-07-28)
SiO2 (1-x) - TiO2 (x) waveguides, with the mole fraction x in the range 0.07 - 0.20 and thickness of about 0.4 μm, were deposited on silica substrates by a dip-coating technique. The thermal treatments at 700-900°C, used ...
Nucleation and crystallization of titania nanoparticles in silica titania planar waveguides: A study by low frequency Raman scattering
(2004-07-28)
SiO2 (1-x) - TiO2 (x) waveguides, with the mole fraction x in the range 0.07 - 0.20 and thickness of about 0.4 μm, were deposited on silica substrates by a dip-coating technique. The thermal treatments at 700-900°C, used ...
Synthesis of mesoporous silica-coated magnetic nanoparticles modified with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole and its application as Cu(II) adsorbent from aqueous samples
(2016-03-30)
This study presents an alternative, rapid, and environment-friendly synthesis procedure of a magnetic core-shell mesoporous SBA-15 silica composite, its functionalization with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole ...
Poli(óxido de etileno-co-dimetilsiloxano) termicamente imobilizado sobre sílica aluminizada como fase estacionária seletiva e estável para CLAEPoly(ethylene oxide-co-dimethylsiloxane) thermally immobilized on aluminized silica as selective and stable HPLC stationary phase
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Química, 2019)
Efeito da nanossílica em matrizes cimentícias de ultra alta resistência
(Universidade Federal de Santa CatarinaLondrinaBrasilEngenharia CivilUFSC, 2016-08-12)
Ultra high performance concretes are estrutural composites, which exhibit a higher structural efficiency, allowing the implementation of lighter structures. Recent researchies have demonstrated that the use of nanossílica ...