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Mostrando ítems 41-50 de 113
Desenvolvimento e caracterização eletroquímica de pilha a combustível de óxido sólido
(Universidade Federal de Minas GeraisUFMG, 2016-08-05)
Nowadays there is an ever growing demand for energy. In this context, various studies are conducted, searching for new forms of efficient power generation. The solid oxide fuel cells come as strong candidates since it is ...
Otimização da microestrutura de componentes de pilhas a combustível de óxido sólido a temperaturas intermediárias
(Universidade Federal de Minas GeraisUFMG, 2014-12-12)
The solid oxide fuel cells are devices capable of converting chemical energy into electrical energy in a highly efficient manner and with low waste generation. Therefore they are likely to be one of the major energy devices ...
Rheology of aqueous mullite-starch suspensions
(Elsevier, 2011-04-12)
One of the forming methods developed for the manufacture of porous materials by direct consolidation, in which a ceramic suspension consolidates into non-porous molds (e.g. metal molds) by thermogelation of an organic ...
Pseudopodosira boltovskoyi sp. nov. (Pseudopodosiraceae, Bacillariophyta) from coastal waters of Argentina
(International Phycological Society, 2017-01)
A new extant marine diatom, Pseudopodosira boltovskoyi sp. nov. (Pseudopodosiraceae, Bacillariophyta), is described with light and scanning electron microscopy from Argentinean coastal waters. Pseudopodosira boltovskoyi ...
Nitrate uptake from water by means of tailored adsorbents
(Springer, 2015-07)
Two different adsorbents directed to nitrate removal from water were developed from Parkinsonia aculeata wood. An activated carbon was obtained by chemical activation with K2CO3 at 800 °C, whereas another adsorbent was ...
Synthesis, chemical and microstructural characterization of micro macroporous biphasic calcium phosphate granules
(John Wiley & Sons Ltd, 2017-07-06)
A route based on calcium phosphate emulsions with addition of glycolic acid as pore former was developed for synthesizing porous nanocrystalline biphasic calcium phosphate ceramics. The method is low cost and gives a ...
Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
(Springer, 2016-04)
Activated carbons from invasive Parkinsonia aculeata wood sawdust were developed by microwave assisted H3PO4 acid activation varying the radiation time (2–10 min). Their main physicochemical characteristics were determined, ...
Nanostructured LnBaCo2O6-δ (Ln = Sm, Gd) with layered structure for intermediate temperature solid oxide fuel cell cathodes
(American Institute of Physics, 2017-04)
In this work, we present the combination of two characteristics that are beneficial for solid oxide fuel cell (SOFC) cathodic performance in one material. We developed and evaluated for the first time nanostructured layered ...
Development of microporous-activated carbons derived from two renewable precursors for CO2 capture
(Springer, 2019-08)
Wood sawdust from an invasive arboreal species, Parkinsonia aculeata, and seeds from a tropical fruit of massive consumption, Pouteria sapota, were used as precursors for the development of activated carbons (ACs) directed ...