Acidity studies of titania-silica mixed oxides
作者： P. K. Doolin , S. Alerasool , D. J. Zalewski , J. F. Hoffman
DOI: 10.1007/BF00816302
关键词:
摘要: A series of titania-silica mixed oxides were prepared by co-precipitation and sol-gel methods. The mole fraction titanium was varied from 0 to 1. effects preparation method chemical composition on the physical properties acidity profiles examined. While pure silica non-acidic titania contained only Lewis acid sites, Bronsted created Ti-O-Si interaction in binary oxides. Samples containing a titania: ratio 9 ∶ 1 possessed largest amount acidity. generation sites stability oxide strong function method. With all methods, higher calcination temperatures increased crystallinity decreased total number sites.
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