Abstract:
The present invention relates in part to a method of stabilizing chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf).
Abstract:
A process for the manufacture of halogenated olefins in semi-batch mode by dehydrohalogenation of halogenated alkanes in the presence of an aqueous base such as KOH which simultaneously neutralizes the resulting hydrogen halide. During the process, aqueous base is continuously added to the haloalkane which results in better yields, lower by-product formation and safer/more controllable operation.
Abstract:
Disclosed is a process to separate halogenated organic contaminants such as 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), 2,3,3,3-tetrafluoropropene (HFO-1234yf), trifluoropropyne (TFPY) from hydrochloric acid (HCl) with an adsorbent selected from an activated carbon, an MFI molecular sieve, a carbon molecular sieve, silica, and combinations thereof.
Abstract:
The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefm starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.
Abstract:
The present disclosure provides a method for separating 244bb from 1233xf by using solid adsorbent selected from molecular sieves having an average pore size of 5A or greater.
Abstract:
A reactor apparatus is provided having a reaction chamber; a compartmentalizing apparatus including a plurality of compartments, each compartment being open at a top end and bottom end, the compartmentalizing apparatus being disposed within the reaction chamber; and an inlet disposed at an area of the reactor and in fluid communication between the reaction chamber and a feed source. Also provided is a reactor apparatus having an assembly having a reaction chamber; at least one agitator assembly configured to generate mixing within the reaction chamber, the agitator assembly including: a shaft partially lined or coated with a fluoropolymer or other non-metallic corrosion-resistant material, and an impeller lined or coated with the fluoropolymer or other non-metallic corrosion-resistant material; and an inlet disposed at an area of the reactor and in fluid communication between the reaction chamber and a feed source. The provided reactor apparatus can be utilized in hydrofluorination processes.
Abstract:
The present invention relates in part to a container for stabilized chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf).
Abstract:
A method for conversion of a composition containing HCFO-1233zd(Z) and HCFC-244fa to form HCFO-1233zd(E) by reacting a mixture including HCFO-1233zd(Z) and HCFC-244fa in a vapor phase in the presence of a catalyst to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E). The catalyst may be a chromium-based catalyst such as chromium trifluoride, chromium oxyfluoride, or chromium oxide, for example.
Abstract:
The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, oligomerization/polymerization of such reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that vaporizing such starting reagents in the presence of one or more organic co-feed reduces such oligomerization/polymerization and improves catalytic stability.
Abstract:
The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.