Biosynthesis of amorphous mesoporous aluminophosphates using yeast cells as templates

Abstract:

In this study aluminophosphates have been synthesized from aluminum isopropoxide and phosphoric acid solutions using yeast cells as template. The physicochemical characterization was carried out by thermogravimetric analysis; X-ray diffraction; Fourier transform infrared; N2 adsorption-desorption isotherms; scanning electron microscopy; transmission electron microscopy and potentiometric titration with N-butylamine for determination of: thermal stability; crystalline structure; textural properties; morphology and surface acidity, respectively. The calcined powders consisted of an intimate mixture of amorphous and crystallized AlPO particles with sizes between 23 and 30 nm. The average pore size observed is 13-16 nm and the specific surface area after calcinations (at 650 °C) ranged between 176 and 214 m2 g-1. © 2012 Elsevier Ltd.

Año de publicación:

2013

Keywords:

• A. Inorganic compounds
• D. Surface properties
• C. Electron microscopy
• B. Chemical synthesis

Fuente:

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