INVESTIGADORES
BRANDA Maria Marta
artículos
Título:
Ab initio study of the isocyanate surface
Autor/es:
R. M. FERULLO; M. M. BRANDA; G. R. GARDA; N. J. CASTELLANI
Revista:
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Editorial:
Elsevier
Referencias:
Año: 2001 p. 115 - 119
ISSN:
1381-1169
Resumen:
surfaces. Mulliken and natural bond population analysis methods have been used in order to analyze charge distributions and
the direction of charge transfer processes. The results indicate that the NCO group adsorbs linearly and perpendicularly to
both surfaces; namely, on top site over silica and on bridge site over alumina. It was observed that the charge transfer from
the oxygen lone pairs of NCO to the NC antibonds produces a weakening of NC link. This phenomenon is more important
over alumina, yielding to an easier NCO decomposition over the surface of this oxide.