Catalytic Activity of ZrO2 Nanotube Arrays Prepared by AnodizationMethod

Abstract EN

ZrO2 nanotube arrays were prepared by anodization method in aqueous electrolyte containing (NH4)2SO4 and NH4F.

The morphology and structure of nanotube arrays were characterized through scanning electron microscope, X-ray diffraction, and infrared spectra analysis.

The zirconia nanotube arrays were used as catalyst in esterification reaction.

The effects of calcination temperature and electrolyte concentration on catalytic esterification activity have been investigated in detail.

Experiments indicate that nanotube arrays have highest catalytic activity when the concentration of (NH4)2SO4 is 1 mol/L, the concentration of NH4F is 1 wt%, and the calcination temperature is 400°C.

Esterification reaction yield of as much as 97% could be obtained under optimal conditions.