Zobrazeno 1 - 10
of 83
pro vyhledávání: '"B. Zeifert"'
Publikováno v:
Revista de Metalurgia, Vol 46, Iss 3, Pp 219-226 (2010)
En este trabajo, se utiliza un sensor de zirconia estabilizada con itria (ZEI) para determinar la presión parcial y el contenido de oxígeno, en aleaciones líquidas Cu-Mn entre 1.100 y 1.300 °C. Los sensores ZEI fueron recubiertos con una películ
Externí odkaz:
https://doaj.org/article/c8a1f63f0a6641378856ce422778e96f
Autor:
V. Arredondo-Torres, A. Romero-Serrano, B. Zeifert, J. Cruz-Rivera, P. Flores-Sánchez, A. Cruz-Ramírez
Publikováno v:
Revista de Metalurgia, Vol 42, Iss 6, Pp 417-424 (2006)
El objetivo de este estudio es analizar el efecto del contenido de MgO y la basicidad de la escoria sobre la estabilidad de las especies mineralógicas del sistema de escoria SiO2-CaOMgO-Cr2O3. Se realizaron ensayos al equilibrio a 1600 °C bajo cond
Externí odkaz:
https://doaj.org/article/cd828bc5ba384f419114846b4570f866
Publikováno v:
Revista de Metalurgia, Vol 41, Iss Extra, Pp 443-446 (2005)
En el presente trabajo se realiza un estudio teórico y experimental para determinar el efecto de la basicidad de la escoria y la cantidad de agentes reductores sobre la reducción de óxidos de cromo contenidos en la escoria, la cual está en contac
Externí odkaz:
https://doaj.org/article/eee6fba4bb6341a5a94dc7339e91e99e
Textural Characterisation of Iron-Promoted Raney Nickel Catalysts Synthesised by Mechanical Alloying
Publikováno v:
Adsorption Science & Technology, Vol 19 (2001)
Mesoporous binary Al x Ni y and ternary Al x Ni y Fe z Raney-type catalysts were synthesised by a two-step procedure involving two main processes, i.e. (i) mechanical metal alloying and (ii) alkaline aluminium leaching. Pure metallic powders of Al, N
Externí odkaz:
https://doaj.org/article/475e9414139a403695203809980f6209
Publikováno v:
Chemical Engineering Science. 119:174-181
Mg–Al hydrotalcite substrates having an X=Al +3 /(Al +3 +Mg +2 ) metal molar ratio equal to 0.2, were synthesized at pH=8 from a coprecipitation method combined with microwave radiation exposure to induce the crystalline network growth of the precu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9f852406d8a2c5418c5ad30ec5c5b03
https://doi.org/10.1016/j.ces.2014.08.009
https://doi.org/10.1016/j.ces.2014.08.009
Akademický článek
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Publikováno v:
Energy & Fuels. 20:1281-1286
Magnetic and nonmagnetic iron compounds were detected as part of asphaltene deposits formed on tubing wall surface. To shed light on the probable role of the iron compounds in the formation of such deposits, magnetite (Fe3O4), one of the intrinsic co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331654e61cd583875068e19e3bc2a9fb
https://doi.org/10.1021/ef0502958
https://doi.org/10.1021/ef0502958
Akademický článek
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Autor:
Victor Lara, B. Zeifert, J.R Vargas, A. Cosultchi, A. Garcı́a-Bórquez, Pedro Bosch, E. Garciafigueroa
Publikováno v:
Materials Letters. 55:312-317
Two techniques, Auger electron spectroscopy (AES) and energy dispersive spectroscopy (EDS), were applied to obtain the composition of the cross-section of a piece of tubing used within a petroleum well. The structure and composition of the steel wall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c7abc8650be50c7692c0e157703e7ca
https://doi.org/10.1016/s0167-577x(02)00384-1
https://doi.org/10.1016/s0167-577x(02)00384-1
Autor:
A. Muñoz-Flores, E. Garciafigueroa, Victor Lara, Pedro Bosch, B. Zeifert, A. Garcı́a-Bórquez, A. Cosultchi
Publikováno v:
Surface Review and Letters. :1299-1306
Reduction of petroleum wells production is often observed and related to the presence of solid deposits adhered on the internal wall of the tubing. A piece of tubing with organic material adhered on its surface was recovered from a Mexican southeaste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a51e4e5a1a0da0bdef3388f02135d834
https://doi.org/10.1142/s0218625x99001463
https://doi.org/10.1142/s0218625x99001463