Purification of trans-1,3,3,3-tetrafluoropropene
AssigneeHoneywell International Inc.
InventorsRaymond Hilton Thomas, Stephen A. Cottrell
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Abstract
Disclosed is a process for removing impurities from a product stream comprising trans HFO-1234ze and an HFO-1234 impurity that uses one or more adsorbents that are selective for the HFO-1234 impurity, such that the HFO-1234 impurity is removed from the product stream. One such impurity is HFO-1234zc, which is removed from its mixture with trans HFO-1234ze by action of an adsorbent having pores in the range of from about 5 angstroms to about 10 angstroms.
Claims20
A process for removing impurities from a product stream comprising trans HFO-1234ze and an HFO-1234 impurity comprising contacting the product stream with one or more adsorbents that are selective for the HFO-1234 impurity, such that the HFO-1234 impurity is removed from the product stream.
A process for removing impurities from a product stream comprising trans HFO-1234ze and an HFO-1234 impurity that uses one or more adsorbents that are selective for the HFO-1234 impurity, such that the HFO-1234 impurity is removed from the product stream;
- wherein the impurity comprises HFO-1234zc;
- and
- wherein the adsorbent has pores in the range of from about 5 angstroms to about 10 angstroms.
Dependencies are inferred from the claim text.