
%0 Journal Article
%A Liu, Li 
%A Liu, Li 
%A Chen, Zu-Xing 
%A Chen, Zu-Xing 
%A Liu, Shi-Zhong 
%A Liu, Shi-Zhong 
%A Zhang, Hesheng 
%A Zhang, Hesheng 
%T Studies on the Preparation, Characterization and Catalytic Activity of the Nanosolid Heteropoly Acid H<emph type="8">3</emph>PW<emph type="8">12</emph>O<emph type="8">40</emph>/SiO<emph type="8">2</emph> Using the Sol-Gel Method
%J Australian Journal of Chemistry
%D 2001/11/29
%V 54
%N 5
%P 299-301
%K 
%R https://doi.org/10.1071/CH01038
%U https://www.publish.csiro.au/paper/CH01038 
%X A new nanosolid heteropoly acid H3PW12O40/SiO 2has been prepared by using the sol&#8211;gel method. The structure of this acid has been studied by infrared (IR) spectroscopy, X-ray diffraction (XRD) methods, transmission electron microscopy (TEM), X-ray photoemission spectroscopy (XPS) and specific area detector analysis. The results show that the nanosolid (diameter: 30&#8211;70 nm) is amorphous and has a large surface area (506.5 m2 g-1). Infrared spectra revealed that the skeleton of the heteropoly anion PW12O403&#8211;still exists in the silica structure. The catalytic activity was measured by monitoring the synthesis of methyl t-butyl ether (MTBE); MTBE was obtained in yields of up to 84.0% and the catalyst remained highly active after five uses. 
