Results 51 to 60 of about 11,125 (140)
Evaluation of Ceramic Properties of Bauxitic Materials from SE of Iberian Range
ChemEngineeringThe use of aluminum-rich clays and bauxites as refractory materials is common. Upon firing, these materials form mullite crystals in the shape of needles embedded in a siliceous and vitreous matrix, with mullite being responsible for the refractory ...
Domingo Martín +7 more
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ChemCatChem, Volume 17, Issue 21, November 10, 2025.Desulfurization in the FCC riser is achieved by modifying zeolite catalysts with La3+ ions, promoting H2S formation from thiophenic compounds while suppressing secondary reactions. This approach enhances gasoline quality by increasing selectivity for H2S and enabling efficient condensation and alkylation, supporting cleaner fuel production and ...
Ronaldo C. Santos +8 more
wiley +1 more source
Boletín Geológico, 1966 La investigación moderna de arcillas se basa en el estudio de la red molecular. En estos estudios se usan rayos X, ensayos termodiferenciales y exámenes con el microscopio electrónico.
Reinaldo Ellwanger
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Ru‐Doped Fe₂TiO₅ as a High‐Performance Electrocatalyst for Urea‐Assisted Water Splitting
Small, Volume 21, Issue 41, October 16, 2025.Ru doping in Fe₂TiO₅ enhances urea oxidation reaction (UOR) kinetics by inducing structural distortion and creating favorable adsorption sites. The optimized 2−xRuxTiO5 exhibits superior performance with a lower onset potential and robust durability, demonstrating its potential as an efficient electrocatalyst beyond traditional photocatalytic ...
Kassa Belay Ibrahim +13 more
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Geofísica Internacional, 1996 La región, que abarca a la unidad paleogeográfica Mesozoica denominada Plataforma Valles-San Luis Potosí, tiene influencia volcánica tanto del dominio Cordillerano como del Golfo de México, por lo que es un área favorable para el estudio de los sucesivos
Juan José Valencia-Islas +2 more
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Biofuels, Bioproducts and Biorefining, Volume 19, Issue 5, Page 1271-1288, September/October 2025.Abstract This paper presents a novel technology for converting glycerol, a byproduct of the biodiesel industry, into glycerol carbonate, a high‐value bioproduct. The effect of calcination temperature on the synthesis of quaternary Cu‐Ni‐Mg‐Al catalysts (MMO‐Cu15Ni15‐Tz) and their application in the transesterification reaction was investigated ...
Dalma S. Argüello +5 more
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Contribución al conocimiento del entorno geológico de las mineralizaciones de Fe al sur de El Pedroso (Sevilla) [PDF]
, 1986 New data on the geological setting of the el Pedroso magnetite deposits (Southern Iberian Massif) are presented. Magnetite is found in a carbonate band whih was skarn transformed by the El Pedroso granitoid intrusion. The skarn is thought to be of lime
Miras Ruiz, Adolfo +1 more
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Revista de Indias, 2013 Este ensayo examina el papel que juega la «tropicalidad» en la taxonomía de la naturaleza y cultura americanas que ofrece Oviedo en el Sumario de la natural historia de las Indias (1526).
Nicolás Wey Gómez
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ChemCatChem, Volume 17, Issue 17, September 5, 2025.Catalysts with varying palladium (Pd) loading supported on activated carbon were assessed for their effectiveness in the oxidative condensation of furfural. Furan‐2‐acrolein was the primary product, depending on the palladium content. Reusability tests showed a decline in the yield of furan‐2‐acrolein.
Rocío Maderuelo Solera +6 more
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Estudios Geologicos, 2007 El yacimiento de Las Higueruelas constituye un escenario singular para el estudio de procesos diagenéticos relacionados con un contexto tafonómico complejo.
E. R. Badiola +2 more
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