Nano TiO-2 had been prepared in solution gel method. Nano TiO-2 was used for the catalyst of synthesizing polybutylene terephthalate(PBT) instead of tetrabutyl titanate.

• 用溶胶 -凝胶法制备纳米二氧化钛 (TiO2 )材料 ,替代钛酸丁酯作为合成聚对苯二甲酸丁二酯催化剂。