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L- and D-proline adsorption by chiral ordered mesoporous silica

Abstract: Chiral ordered mesoporous silica (COMS) was synthesized in the presence of amino acid proline by combining tetraethyl orthosilicate and quaternized aminosilane silica sources. The as-prepared materials were activated by calcination or microwave chemical extraction to remove the organic templates. The powder X-ray diffraction and N2 adsorption characterization revealed in COMS the structural and textural features of MCM-41-type silica. The chirality of the material was disclosed by mixed and separate L- and D-proline adsorption on the COMS prepared with L-proline (L-Pro-COMS) and D-proline (D-Pro-COMS). It was found that the maximum L-proline and D-proline adsorption capacities on L-Pro-COMS were ca. 2.3 and 0.6 mmol/g, respectively, while the adsorption of D-proline was higher than that of L-proline on D-Pro-COMS. Finally, both activation routes yielded enantioselective silicas able to separate proline racemate.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Langmuir, 2012, 28(16), 6638-6644

Editorial: American Chemical Society

 Fecha de publicación: 24/04/2012

Nº de páginas: 7

Tipo de publicación: Artículo de Revista

 DOI: 10.1021/la300864n

ISSN: 0743-7463,1520-5827

Proyecto español: MAT2007-61028 ; CTQ2008- 00187

Url de la publicación: https://doi.org/10.1021/la300864n

Autores/as

CASTÁN LAFUENTE, JOAQUÍN

GRACIA GARZA, ISMAEL

YUS, MIRIAM

MAYORAL GARCÍA, ÁLVARO

SEBASTIÁN CABEZA, VÍCTOR

LÓPEZ RAM DE VIU, MARÍA PILAR

URIEL RUBIO, SANTIAGO

JOAQUIN CORONAS CERESUELA