Honeywell International Inc.

Cheryl L Bortz

Sudip Mukhopadhyay

Barbara A Light

Hsueh Sung Tung

Daniel C Merkel

Michael Van Der Puy

Jing Ji Ma

Steven D Phillips

Rajesh K Dubey

Kim M Fleming

Haridasan K Nair

Robert C Johnson

Cheryl Cantlon

Susan A Ferguson

Richard Udy

Susan Ferguson

Sudip Mukhopahyay

Rajesh Dubey

Dubey Rajesh

Steven Phillips

Cheryl L Cantlon

Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CFCF&#x2550;CH(1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl&#x2550;CClCHCl (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CFCCl&#x2550;CH, preferably in a 80-96% selectivity. The CFCCl&#x2550;CHis preferably converted to CFCFClCH(244-isomer) using a SbClas the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture of CrOand FeCl/C is preferably used as the catalyst to achieve high selectivity to CFCCl&#x2550;CH(96%). In the second step, SbCl/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CFCFClCH. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.

Method for producing fluorinated organic compounds

Disclosed is a process for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of Formula (I):C(X)CFC(X)&#x2003;&#x2003;(I)to at least one compound of Formula (II)CFCF&#x2550;CHZ&#x2003;&#x2003;(II)where each X and Z is independently H, F, Cl, I or Br, said process preferably not including any substantial amount of oxygen-containing catalyst in certain embodiments. Preferably Z is H.

Disclosed is a process for the synthesis of fluorinated olefins, and in particularly preferred embodiments tetrafluorinated olefins having F on an unsaturated, non-terminal carbon, such as 2,3,3,3-tetrafluoropropene. The preferred processes of the present invention in accordance with one embodiment generally comprise:

Process for synthesis of fluorinated olefins

A method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I):CF(&#x2014;CXX)CX&#x2550;H&#x2003;&#x2003;(I)to at least one compound of formula (II):CF(CXX)CX&#x2550;H&#x2003;&#x2003;(II),where Xis Cl, Br or I, each Xis independently selected from the group consisting of H, Cl, F, Br or J, and n is 0, 1, or 2.

Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CFCF&#x2550;CH(1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl&#x2550;CClCHCl is fluorinated to synthesize a compound such as CFCCl&#x2550;CH. The CFCCl&#x2550;CHis preferably converted to CFCFClCH(244-isomer) using a SbClas the catalyst which is then transformed selectively to 1234yf. For the first step, a mixture of CrOand FeCl/C is preferably used as the catalyst to achieve high selectivity to CFCCl&#x2550;CH(96%). In the second step, SbCl/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CFCFClCH. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.

A method for preparing fluorinated organic compounds comprising contacting hydrogen fluoride with at least one compound of formula I:CXCXYCH&#x2003;&#x2003;Iwhere each X is independently Cl, I or Br, and each Y is independently H or F, said contacting step being carried out under conditions effective to produce a compound of formula IICFCZCH&#x2003;&#x2003;IIwhere Z is Cl, I, Br, or F.

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N. Tonawanda, NY, United States of America

Cheryl L Bortz