Measurement of pore diffusivity of R,S-alpha-Tetralol enantiomers in chiral adsorbent CHIRALPAK AD by zero length column method

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Zabka, M (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Separation and Purification Technology

Vol. 57 Nº 1

Páginas: 74-84

ISSN: 1383-5866

Editora: Elsevier

Indexação

ISI Proceedings

ISI Web of Knowledge - 2 Citações

Scopus - 1 Citação

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-004-7C3

DOI: 10.1016/j.seppur.2007.03.011

Resumo (PT): CHROMATOGRAPHIC-SEPARATION; 5A ZEOLITE; ZLC METHOD; COEFFICIENTS; PELLETS; EQUILIBRIUM; PARAMETERS; ADSORPTION; KINETICS; SORPTION

Abstract (EN): The zero length column (ZLC) technique for measurement of pore diffusivity in chiral adsorbent CHIRALPAK AD with particle size 20 and 50 mu m at temperature of 25 degrees C was used. Due to limited sensitivity of the detectors and higher liquid density, the experimental conditions under which the reliable pore diffusivity measurements can be provided are limited. Simulations have been carried out in order to analyze the effect of the model parameters and to choose the proper experimental conditions. The theoretical model which considers the ZLC cell as a continuous stirred tank has been applied. For both particle sizes, pore diffusivity at temperature of 25 degrees C is 4.0 x 10(-6) cm(2) A and tortuosity 7 was calculated. Good agreement was found between the experimental and simulated desorption curves.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11