Ulsan Chemical Co., Ltd.

Hyang Ja Jang

Yuichi Iikubo

Dae Hyun Kim

Young Su Kim

Cheol Ho Kim

Young Gu Cho

Jung Eun Lee

The method of preparing a chromium oxide catalyst for preparation of pentafluoroethane using a chloroethane compound includes heat treating chromium hydroxide powder at a temperature not higher than 300&#xb0; C. to obtain chromium oxide powder, heat treating metal hydroxide, at a temperature not higher than 300&#xb0; C. to obtain metal oxide powder, mixing 85&#x2dc;99.5 wt % of the chromium oxide powder with 0.5&#x2dc;15 wt % of the metal oxide powder to obtain a mixture, forming the mixture into a pellet, calcining the pellet at 200-300&#xb0; C. using nitrogen gas, and fluorinating the pellet at 300-320&#xb0; C. using a gas mixture including Nand HF, and then at 320-380&#xb0; C. using HF gas. The fluorination catalyst prepared using the method of this invention can be effectively used to prepare pentafluoroethane at a high yield using a chloroethane compound.

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Ulsan, South Korea

Hyang Ja Jang