Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.

In this paper we present a mathematical model for the surface-controlled dissolution of cylindrical solid particles. This is employed to interpret experimental data published previously for the dissolution of potassium bicarbonate in dimethylformamide at elevated temperatures. Significant kinetic di...

Descripción completa

Detalles Bibliográficos
Autores principales: Forryan, C, Klymenko, O, Wilkins, S, Brennan, C, Compton, R
Formato: Journal article
Lenguaje:English
Publicado: 2005
_version_ 1826299494948405248
author Forryan, C
Klymenko, O
Wilkins, S
Brennan, C
Compton, R
author_facet Forryan, C
Klymenko, O
Wilkins, S
Brennan, C
Compton, R
author_sort Forryan, C
collection OXFORD
description In this paper we present a mathematical model for the surface-controlled dissolution of cylindrical solid particles. This is employed to interpret experimental data published previously for the dissolution of potassium bicarbonate in dimethylformamide at elevated temperatures. Significant kinetic differences in assuming cylindrical rather than spherical shapes are reported with the former representing a closer approximation to the true shape of the particles as revealed by scanning electron microscopy. From the fits of experimental data to the cylindrical model for the surface-controlled dissolution, the dissolution rate constant, k, for the dissolution of KHCO(3) in DMF was found to be (9.6 +/- 1.6) x 10(-9) mol cm(-2) s(-1) at 100 degrees C, and the activation energy for the dissolution was 34.5 kJ mol(-1) over the temperature range of 60-100 degrees C. Comparison between cylindrical and spherical dissolution theory highlights the importance of considering the particle shapes for realistic modeling of surface-controlled dissolution kinetics.
first_indexed 2024-03-07T05:02:47Z
format Journal article
id oxford-uuid:d8e11a6c-57d6-490d-acb7-c1a410d0a6aa
institution University of Oxford
language English
last_indexed 2024-03-07T05:02:47Z
publishDate 2005
record_format dspace
spelling oxford-uuid:d8e11a6c-57d6-490d-acb7-c1a410d0a6aa2022-03-27T08:51:55ZExperimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d8e11a6c-57d6-490d-acb7-c1a410d0a6aaEnglishSymplectic Elements at Oxford2005Forryan, CKlymenko, OWilkins, SBrennan, CCompton, RIn this paper we present a mathematical model for the surface-controlled dissolution of cylindrical solid particles. This is employed to interpret experimental data published previously for the dissolution of potassium bicarbonate in dimethylformamide at elevated temperatures. Significant kinetic differences in assuming cylindrical rather than spherical shapes are reported with the former representing a closer approximation to the true shape of the particles as revealed by scanning electron microscopy. From the fits of experimental data to the cylindrical model for the surface-controlled dissolution, the dissolution rate constant, k, for the dissolution of KHCO(3) in DMF was found to be (9.6 +/- 1.6) x 10(-9) mol cm(-2) s(-1) at 100 degrees C, and the activation energy for the dissolution was 34.5 kJ mol(-1) over the temperature range of 60-100 degrees C. Comparison between cylindrical and spherical dissolution theory highlights the importance of considering the particle shapes for realistic modeling of surface-controlled dissolution kinetics.
spellingShingle Forryan, C
Klymenko, O
Wilkins, S
Brennan, C
Compton, R
Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.
title Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.
title_full Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.
title_fullStr Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.
title_full_unstemmed Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.
title_short Experimental and theoretical study of the surface-controlled dissolution of cylindrical particles. Application to solubilization of potassium hydrogen carbonate in hot dimethylformamide.
title_sort experimental and theoretical study of the surface controlled dissolution of cylindrical particles application to solubilization of potassium hydrogen carbonate in hot dimethylformamide
work_keys_str_mv AT forryanc experimentalandtheoreticalstudyofthesurfacecontrolleddissolutionofcylindricalparticlesapplicationtosolubilizationofpotassiumhydrogencarbonateinhotdimethylformamide
AT klymenkoo experimentalandtheoreticalstudyofthesurfacecontrolleddissolutionofcylindricalparticlesapplicationtosolubilizationofpotassiumhydrogencarbonateinhotdimethylformamide
AT wilkinss experimentalandtheoreticalstudyofthesurfacecontrolleddissolutionofcylindricalparticlesapplicationtosolubilizationofpotassiumhydrogencarbonateinhotdimethylformamide
AT brennanc experimentalandtheoreticalstudyofthesurfacecontrolleddissolutionofcylindricalparticlesapplicationtosolubilizationofpotassiumhydrogencarbonateinhotdimethylformamide
AT comptonr experimentalandtheoreticalstudyofthesurfacecontrolleddissolutionofcylindricalparticlesapplicationtosolubilizationofpotassiumhydrogencarbonateinhotdimethylformamide