Artículo
Molecular dynamics and solid-solid phase transformation kinetics studies of tert-butyl chloride confined in mesoporous silica by NQR
Fecha de publicación:
06/10/2005
Editorial:
Elsevier Science
Revista:
Catalysis Today
ISSN:
0920-5861
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Resumen
In this paper, we study the effect of a porous adsorbent, such as silica with a pore diameter of 375 Å on the molecular dynamics and the solid-solid phase transformations of tert-butyl chloride (t-BC) inside the pores by means of chlorine nuclear quadrupole resonance (NQR). The spin-lattice relaxation time (T1) and the resonance frequency (νQ) as a function of temperature for t-BC, both in bulk and confined in the silica mesopores, have been measured. Changes are observed in the molecular dynamics and in the phase transition temperatures of the t-BC confined in the pores with respect to those corresponding to the t-BC in bulk. Likewise, phase transformation kinetics would seem to be altered due to restrictions of the molecular movement as a consequence of the confinement inside the porous material.
Palabras clave:
Molecular Dynamics
,
Nqr
,
Phase Transitions
,
Silica
,
Tert-Butyl Chloride
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Eimer, Griselda Alejandra; Fernandez, Julio Daniel; Brunetti, Aldo Hector; Molecular dynamics and solid-solid phase transformation kinetics studies of tert-butyl chloride confined in mesoporous silica by NQR; Elsevier Science; Catalysis Today; 107-108; 6-10-2005; 741-749
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