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Characteristics and Catalytic Properties of Alumina–Zirconia Mixed Oxides Prepared by a Modified Pechini Method |
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| Authors: | Patta Soisuwan Dean C. Chambers David L. Trimm Okorn Mekasuwandumrong Joongjai Panpranot Piyasan Praserthdam |
| Affiliation: | (1) Centre of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand;(2) School of Chemical Engineering and Industrial Chemistry, University of New South Wales, Sydney, NSW, 2052, Australia;(3) CSIRO Petroleum, Private Bag 10, Clayton South, VIC, 3169, Australia;(4) Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakon Pathom, 73000, Thailand |
| Abstract: | A modified Pechini method was used to prepare alumina–zirconia mixed oxides at three different molar ratios. For comparison, pure alumina and pure zirconia were prepared using the same method. The mixed oxides were characterised by the BET method for surface area, X-ray diffraction, CO2 and NH3 temperature-programmed desorption. Elimination of 2-propanol was used as a probe reaction to characterise the surface of the mixed oxides. The modified Pechini preparation resulted in a poor acid–base strength of alumina surface resulting in high acetone selectivity where imperfect crystal structure of the tetragonal zirconia favoured high propylene production in 2-propanol elimination at 200 °C. |
| Keywords: | alumina zirconia mixed oxide Pechini method 2-propanol |
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