20-02-2014 дата публикации
Номер: US20140051896A1
Принадлежит:
Disclosed is a method for purifying a trans-1,3,3,3-tetrafluoropropene, in which a composition containing trans-1,3,3,3-tetrafluoropropene and at least one impurity selected from the group consisting of CHClF, CFCHCHClF, CFCHCHF, CHFCH═CF, CFCH═CHCl, CFCH═CH, CFC≡CH, and cis-1,3,3,3-tetrafluoropropene is brought into contact with a solid adsorbent to reduce an impurity content thereof. By this method, it is possible to remove the impurity in trans-1,3,3,3-tetrafluoropropene by a simple operation. 1. A method for purifying a trans-1 ,3 ,3 ,3-tetrafluoropropene , comprising the step of bringing a composition containing trans-1 ,3 ,3 ,3-tetrafluoropropene and at least one impurity selected from the group consisting of CHClF , CFCHCHClF , CFCHCHF , CHFCH═CF , CFCH═CHCl , CFCH═CH , CFC≡CH , and cis-1 ,3 ,3 ,3-tetrafluoropropene into contact with a solid adsorbent to reduce an impurity content thereof.2. The purification method according to claim 1 , wherein one of the impurities is cis-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene or CFCHCHF.3. The purification method according to claim 1 , wherein the solid adsorbent is zeolite A or zeolite X.4. A method for producing trans-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene claim 1 , comprising the step of purifying a trans-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene by bringing a composition containing trans-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene and at least one impurity selected from the group consisting of CHClF claim 1 , CFCHCHClF claim 1 , CFCHCHF claim 1 , CHFCH═CF claim 1 , CFCH═CHCl claim 1 , CFCH═CH claim 1 , CFC≡CH claim 1 , and cis-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene into contact with a solid adsorbent to reduce an impurity content thereof.5. A solid-liquid claim 1 , heterogeneous mixture claim 1 , comprising:{'sub': 2', '3', '2', '3', '2', '3', '2', '2', '2', '2', '3', '3', '2', '3, 'a composition containing trans-1,3,3,3-tetrafluoropropene and at least ...
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