Al_2O_3/TiO_2的制备及光催化降解吡啶  

Preparation of Al_2O_3/TiO_2 and Photocatalytic Degradation of Pyridine

作　　者：于丽华[1] 钟俊波[1] 沈昱[1] 徐锁洪[1] 

机构地区：[1]大连铁道学院环境科学与工程系,辽宁大连116028

出　　处：《大连铁道学院学报》2004年第1期85-88,共4页Journal of Dalian Railway Institute

摘　　要：以钛酸四丁酯为原料,Al2O3为载体,用溶胶-凝胶法制备负载型TiO2,在UV-TiO2体系中对吡啶(PD)进行光催化降解,并研究了将TiO2负载在不同铝源所制备的Al2O3后光催化剂的差异,结果表明:负载型TiO2光催化剂加入量为10mg/40mL,吡啶的光催化降解反应符合一级动力学方程;吡啶中氮转化成氨氮.将TiO2负载在Al2O3上后利用率提高了6倍左右.In this paper, the preparation of TiO_2 photocatalyst coated on the aluminum oxide surface by sol-gel technique using tetrabutyl titanate as material was studied. In the suspension systems of aluminum oxide coated TiO_2, photocatalytic degradation of pyridine (PD) with medical violet lamp was studied. The photoactivity of the catalyst which coated on different aluminum oxide was studied.The results shows that the amount of catalyst is 10 mg/40 ml, the photocatalytic degradation reaction is a firstorder reaction, nitrogen in pyridine converts to ammonia nitrogen, and utilization ratio of the catalyst which coated on aluminum oxide is seven times of TiO_2 powers.

关 键 词：二氧化钛 氧化铝 光催化 吡啶 环境污染控制 氨氮 

分 类 号：O643.36[理学—物理化学] X506[理学—化学]