热稳定氧化铝改性二氧化钛的新合成:醇氧化合物在有机溶剂中的热分解

M. Kohno, Toshimi Furushima, H. Kominami, K. Kagawa, Y. Kera
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引用次数: 0

摘要

以钛和铝的醇氧化物混合物为原料,在300℃的甲苯中热分解,合成了锐钛矿形式的氧化铝改性钛样品(Al-TiO2)。由异丙醇钛(TIP)和乙醇铝(Ti/Al摩尔比为9)制备的Al - tio2在1000℃左右转化为金红石,在800℃煅烧1 h后,其表面积为48 m2 g−1。另一种由TIP和异丙醇铝制备的Al - tio2在800℃时表现出较低的热稳定性(39 m2 g−1),表明铝烷氧化物的反应性决定了制备的Al - tio2的热稳定性。
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Novel Synthesis of Thermally Stable, Alumina- modified Titania : Thermal Decomposition of Alkoxides in Organic Solvent
Alumina-modified titania sample (Al–TiO2) in anatase form was synthesized by thermal decomposition of mixtures of alkoxides of titanium and aluminum in toluene at 300 °C. The Al–TiO2 prepared from titanium(IV) isopropoxide (TIP) and aluminum ethoxide (Ti/Al mole ratio 9) transformed into rutile at around 1000 °C, and it possessed a surface area of 48 m2 g−1, even after calcination at 800 °C for 1 h. Another Al–TiO2 prepared from TIP and aluminum isopropoxide showed lesser thermal stability (39 m2 g−1 at 800 °C), suggesting that reactivity of aluminum alkoxides determines the thermal stability of produced Al–TiO2.
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