Buscar
Mostrando ítems 1-10 de 109
Thermoanalytical and spectroscopic characteristics of young and old leaves powder and methanolic extracts of Niedenzuella multiglandulosa
(2018-04-01)
Niedenzuella multiglandulosa is a plant species known for having high toxicity and to cause death in cattle and sheep, promoting economic losses in Brazilian trade balance difficult to estimate. This work aims to evaluate ...
Mechanism of the decomposition of adsorbed methanol over a Pd/α,β-Ga2O3 catalyst
(Elsevier Science, 2005-12)
The thermal decomposition of adsorbed methanol on 2 wt.% Pd/silica, 2 wt.% Pd/gallia and pure gallia, was studied by temperatureprogrammed surface reaction (TPSR), between 323 and 723 K under He flow, using FT-IR spectroscopy. ...
Reformado de metanol para la producción de hidrógeno sobre catalizadores de Pd/CeO2-ZnO
(2013-11-21)
Se presentan estudios sobre catalizadores de paladio soportado en óxidos de cinc y de cerio, aptos para la reacción de reformado de metanol con vapor de agua (SRM). Así, se sintetizaron soportes de ZnO, CeO2, y ZnO-CeO2 ...
Methanol synthesis from CO2/H2 using Ga2O3-Pd/silica catalysts: Kinetic modeling
(Elsevier Science Sa, 2009-12)
The synthesis of methanol from CO2/H2 on a Ga2O3?Pd/silica catalyst, together with the reverse water gas shift reaction, was modeled for a wide range of temperatures (508?538 K), pressures (1?4MPa), compositions (H2/CO2 = ...
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property
(2019-11-01)
Resins of polyurethane were prepared from vegetable oils (crambe and castor) and modified by adding green corrosion inhibitor (condensed tannin). The oils were characterized by gas chromatography with flame-ionization ...
Thermochemistry of n-alkylamines interaction with ETS-10 titaniunsilicate
(Elsevier Science BvAmsterdamHolanda, 2004)
Lignin from sugar cane bagasse: Extraction, fabrication of nanostructured films, and application
(Amer Chemical Soc, 2007-06-05)
Four lignin samples were extracted from sugar cane bagasse using four different alcohols (methanol, ethanol, n-propanol, and 1-butanol) via the organosolv-CO2 supercritical pulping process. Langmuir films were characterized ...