Picture of DNA strand

Pioneering chemical biology & medicinal chemistry through Open Access research...

Strathprints makes available scholarly Open Access content by researchers in the Department of Pure & Applied Chemistry, based within the Faculty of Science.

Research here spans a wide range of topics from analytical chemistry to materials science, and from biological chemistry to theoretical chemistry. The specific work in chemical biology and medicinal chemistry, as an example, encompasses pioneering techniques in synthesis, bioinformatics, nucleic acid chemistry, amino acid chemistry, heterocyclic chemistry, biophysical chemistry and NMR spectroscopy.

Explore the Open Access research of the Department of Pure & Applied Chemistry. Or explore all of Strathclyde's Open Access research...

Pore-network connectivity and molecular sieving of normal and isoalkanes in the mesoporous silica SBA-2

Pérez-Mendoza, Manuel and González, Jorge and Ferreiro-Rangel, Carlos A. and Lozinska, Magdalena M. and Fairén-Jiménez, David and Düren, Tina and Wright, Paul A. and Seaton, Nigel A. (2014) Pore-network connectivity and molecular sieving of normal and isoalkanes in the mesoporous silica SBA-2. Journal of Physical Chemistry C, 118 (19). pp. 10183-10190. ISSN 1932-7447

Full text not available in this repository.Request a copy from the Strathclyde author


We have studied the adsorption of n-butane and isobutane in the mesoporous silica SBA-2. Our work has two purposes: (i) to better understand the structure of the material, and in particular the impact of calcination on the evolution of the pore network, and (ii) to investigate our ability to tune the structure of SBA-2 to separate normal and isoalkanes by molecular sieving. By a combination of experimental adsorption measurements, molecular simulation, and percolation analysis, we determined the evolution of the sizes of the pores and the connectivity of the pore network as the calcination temperature increases. For a certain range of calcination temperatures, the pore network drops below its percolation threshold for isobutane, while allowing the percolation of n-butane, giving an extremely high selectivity for n-butane over isobutane. This suggests that tuning the window size of SBA-2 and other structured mesoporous materials of this general type has the potential to generate optimized adsorbents for particular applications.