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| Título : | Absolute surface coverage of tungsten^alumina catalysts |
| Autor : | Pfaff, C.
Pérez Zurita, M. Josefina
Scott, Carlos
Patiño, Pedro
Goldwasser, Mireya
Goldwasser, J.
Mulcahy, F.M.
Houalla, M.
Hercules, D.M |
| Palabras clave : | tungsten,
absolute surface coverage,
ISS,
low-temperatureCOadsorption |
| Fecha de publicación : | 20-Jul-2015 |
| Resumen : | Absolute surface coverages ( ) of a series of tungsten^alumina catalysts prepared by the equilibrium adsorption method were
determined by ion scattering spectroscopy (ISS) and low-temperature CO adsorption. The CO values for theWcatalysts were very
similar to those obtained with the ISS method, for a given W loading. A linear increase in Wcoverage with increasingW loading,
reaching 55%coverage for the 13.1%Wsolid,was observed. The calculatedWcross-sections (22.0^24.5Ð2/W)were in agreement
with other reports in the literature. Due to the inherent limitations of each method, the combined use of ISS and low-temperature
COadsorption is recommended for estimating absolute surface coverages in tungsten^alumina catalysts. |
| URI : | http://hdl.handle.net/10872/11421 |
| ISSN : | 1572-879X |
| Aparece en las colecciones: | Artículos Publicados
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