利用多元醇氟化法制备了氟化铝、氟化镁及镁铝复合型氟化物等催化剂，并对所制催化剂在1，1，1，3，3-五氟丙烷（HFC-245fa）气相脱氟化氢制备1，3，3，3-四氟丙烯（HFO-1234ze）反应中的催化性能进行了研究。结果表明，单一氟化镁催化剂活性较低，HFC-245fa转化率仅为7.8%；以摩尔分数为9% Al/MgF₂作为催化HFC-245fa脱氟化氢反应催化剂，在反应温度为280℃，接触时间为25 s，催化剂用量为5 mL时，HFC-245fa的转化率、HFO-1234ze的选择性分别达到53%和100%，与单一组分氟化铝催化性能相当，且运行200 h后保持96%的初始活性。

Gas-phase catalytic dehydrofluorination of 1,1,1,3,3-pentafluoropropane (HFC-245fa) to prepare 1,3,3,3-tetrafluoropropylene (HFO-1234ze) is investigated over a series of magnesium fluoride,aluminum fluoride and magnesium-aluminum fluoride catalysts that are prepared by polyols mediated fluorination method.The results show that the conversion of HFC-245fa is only 7.9% over single magnesium fluoride catalyst.Higher conversion of HFC-245fa (53%) and higher selectivity of HFO-1234ze (100%) are achieved over 9 mol.% Al/MgF₂ catalyst when the dosage of catalyst is 5 mL,the reaction temperature is 280℃ and the contact time is 25 s.The catalytic performance is same as single aluminum fluoride catalyst.The catalyst can still retain 96% of initial activity after it has been used for 200 hours.

贾兆华(1992-),男,硕士生,研究方向为含氟化学品合成,1542320290@qq.com