Polystyrene-divinylbenzene (4%) copolymer beads were combined with tellurium tetrach-toride in chloroform to form a complex containing 8.86% of chlorine which corresponding to 3.29×10-4mol TeCl4/lg complex beads. The complex can be used to catalyze a lot of organic react ions in higher yield

such as esterification

acetalization

ketal formation

and ethierifica-tion. The complex catalyst is stable in air at least one year and can be resused a few times.