Sinochem Lantian Co., Ltd.

Sinochem Modern Environmental Protection Chemicals (xi'an) Co., Ltd.

Huie Yang

Gang Yang

Shukang Chen

Lei Xu

Xintang Zhao

Wenqing Zhang

Changhua Zeng

Jianping Fan

Zhong Li

Kunfeng Liu

Yunlong Lei

En Jiang

Shaohua Yan

Hua Chai

Zhixia Zhao

Disclosed is an HFO-1234ze preparation process. The present invention is realized by loading two fluorination catalysts into the same reactor, and controlling the temperature in each section. The preparation process of the present invention is of moderate reaction condition, stable catalyst activity, and simple process.

1, 3, 3, 3-tetrafluoropropene preparation process

Disclosed is an HFO-1234ze and HFC-245fa co-production preparation method. The HFO-1234ze and HFC-245fa are prepared through a two-stage gas phase fluorination reaction by using 1,1,1,3,3-pentachloropropane (HCC-240fa) as a raw material. With the processing method of the present invention, HFO-1234ze and HFC-245fa can be prepared at the same time, and the alkene is unlikely to polymerize or carbonize during the reaction, thus being suitable for industrialized promotion.

HFO-1234ze and HFC-245fa co-production preparation process

Provided are a fluorination catalyst for preparing 2,3,3,3-tetrafluoropropene and a method using the catalyst for preparing 2,3,3,3-tetrafluoropropene. The catalyst has the following structural formula: Crx(Y,Z)OF, where Y is one or a combination of two or more among Al, Zn, and Mg, and where Z is a rare earth element having an oxygen-storing/releasing function. The catalyst has in preparing 2,3,3,3-tetrafluoropropene the advantages of increased raw material conversion rate, great product selectivity, and extended catalyst service life.

Method for preparing 2,3,3,3-tetrafluoropropene

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Shaanxi, China

Huie Yang