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Mostrando ítems 91-98 de 98
Artículo
Gold catalysts screening in base-free aerobic oxidation of glucose to gluconic acid
(Elsevier, 2017-01-01)
Base-free aerobic oxidation of glucose in presence of Au/Al2O3, Au/CeO2, Au/CeO2(20 wt%)/Al2O3, Au/CeO2(25 wt%)/ZrO2 and Au/CeO2(50 wt%)/ZrO2 catalysts using molecular oxygen at atmospheric pressure is studied. Within the ...
Artículo
Dihydrogen and Acetylene Activation by a Gold(I)/Platinum(0) Transition Metal Only Frustrated Lewis Pair
(American Chemical Society, 2017)
The first example of a Frustrated Lewis Pair (FLP) solely constructed around transition metal centers is described in this work. We have focused on the established capacity of Au(I) and Pt(0) complexes to act as Lewis ...
Artículo
Optical gas sensing of ammonia and amines based on protonated porphyrin/TiO2 composite thin films
(Multidisciplinary Digital Publishing Institute (MDPI), 2017)
Open porous and transparent microcolumnar structures of TiO2 prepared by physical vapour deposition in glancing angle configuration (GLAD-PVD) have been used as host matrices for two different fluorescent cationic ...
Artículo
Marie Skłodowska-Curie y la radioactividad
(Universidad Nacional Autónoma de México (UNAM), 2015)
There is no other woman in the history of science better known than Marie Curie. She was the first woman Professor at the Sorbonne, the University of Paris, after more than six hundreds years, the first woman to obtain ...
Artículo
Artículo
Síntesis y caracterización del nitruro ternario de titanio y vanadio (TixV1-xN)
(Sociedad Española de Cerámica y Vidrio, 2011)
En el presente trabajo se aborda la síntesis del nitruro ternario de titanio y vanadio por reducción carbotérmica de una mezcla de óxidos o bien por nitruración directa de la mezcla de metales, en todo el rango de composiciones ...
Artículo
Effect of the crystal chemistry on the hydration mechanism of swelling micas
(Elsevier, 2017)
Swelling and dehydration under minor changes in temperature and water vapor pressure is an important property that clays and clay minerals exhibit. In particular, their interlayer space, the solid-water interface and the ...
Artículo
Mujeres y química Parte I. De la antigüedad al siglo XVII
(Universidad Nacional Autónoma de México (UNAM), 2013)
Little has been written about the exquisite passion of discovering. This has been the main driving force of the greatest scientists — with the masculine gender — that have been in the world. But what happened with the ...