公开(公告)号：US06512150B1

公开(公告)日：2003-01-28

申请号：US09618116

申请日：2000-07-17

Applicant: Paolo Cuzzato ,  Sergio Peron

Inventor： Paolo Cuzzato ,  Sergio Peron

IPC: C07C1738

CPC classification number: C07C17/23 ,  C07C17/202 ,  C07C17/395 ,  C07C19/08 ,  C07C19/12

Abstract: A gaseous process for reducing the amount of chloropentafluoroethane (CFC 115) impurity present in pentafluoroethane (HFC 125) characterized in that pentafluroethane is allowed to flow on a catalyst formed by a trivalent chromium salt, optionally supported, at temperatures in the range 200° C.-400° C., obtaining the reaction of chloropentafluoroethane with pentafluoroethane with formation of hexafluoroethane (FC 116) and tetrafluorochloroethane (HCFC 124).

Abstract translation: 用于减少存在于五氟乙烷（HFC 125）中的五氟乙烷（CFC 115）杂质的量的气体方法，其特征在于使五氟乙烷在任选负载的三价铬盐形成的催化剂上流动，温度范围为200℃ 400℃，得到五氟乙烷与五氟乙烷与六氟乙烷（FC 116）和四氟氯乙烷（HCFC 124）的反应。

公开(公告)号：US06437200B1

公开(公告)日：2002-08-20

申请号：US09568535

申请日：2000-05-11

Applicant: Paolo Cuzzato

Inventor： Paolo Cuzzato

IPC: C07C1908

CPC classification number: B01J23/26 ,  B01J23/02 ,  C07C17/37 ,  C07C19/08

Abstract: A gaseous process for obtaining pentafluoroethane by dismutation of chlorotetrafluoroethane in the presence of a supported catalyst, said catalyst being formed of a mixture of trivalent chromium oxide with at least an alkaline-earth metal oxide selected from Mg, Ca, Sr and Ba.

Abstract translation: 一种用于通过在负载型催化剂存在下分解氯四氟乙烷获得五氟乙烷的气态方法，所述催化剂由三价铬氧化物与至少一种选自Mg，Ca，Sr和Ba的碱土金属氧化物的混合物形成。

公开(公告)号：US6150572A

公开(公告)日：2000-11-21

申请号：US850767

申请日：1997-05-02

Applicant: Francesco Rinaldi ,  Paolo Cuzzato ,  Letanzio Bragante

Inventor： Francesco Rinaldi ,  Paolo Cuzzato ,  Letanzio Bragante

IPC: B01J23/26 ,  B01J23/92 ,  B01J38/10 ,  B01J38/12 ,  B01J38/18 ,  C07B61/00 ,  C07C17/20 ,  C07C19/08 ,  C07C17/00 ,  B01J20/34

CPC classification number: B01J23/92 ,  B01J38/12 ,  B01J38/18

Abstract: Process for the regeneration of a fluorination catalyst based on Cr(III) compounds optionallay supported comprising a) the treatment at 350.degree. C.-400.degree. C. with an air/inert gas mixture and b) treatment at 300.degree. C.-380.degree. C. with a mixture of an inert gas containing from 1 to 10% by volume of hydrogen.

Abstract translation: 基于Cr（III）化合物的氟化催化剂的再生方法可选择的方法包括a）在空气/惰性气体混合物中在350℃-400℃下处理，和b）在300℃-380℃下处理 与含有1至10体积％氢气的惰性气体的混合物。

公开(公告)号：US5880316A

公开(公告)日：1999-03-09

申请号：US752685

申请日：1996-11-19

Applicant: Paolo Cuzzato ,  Antonio Masiero

Inventor： Paolo Cuzzato ,  Antonio Masiero

IPC: B01J27/12 ,  B01J23/26 ,  B01J27/125 ,  C07B61/00 ,  C07C17/04 ,  C07C17/10 ,  C07C17/20 ,  C07C17/21 ,  C07C19/08 ,  C07C17/08

CPC classification number: C07C17/206 ,  B01J23/26 ,  B01J27/125 ,  C07C17/21

Abstract: 1,1,1,2-tetrafluoroethane (134a) is prepared by reacting, in the gas phase, trichloroethylene with 1,1,1-trifluorochloroethane (133a) and hydrofluoric acid with trichloroethylene/133a molar ratios ranging from 5/95 to 50/50, in the presence of a catalyst consisting of Cr.sub.2 O.sub.3 carried on AlF.sub.3.The process provides 134a yields higher than 90% and permits an exceptionally long life of the catalyst. In this way it is possible to realize a continuous process by recycling the unreacted trichloroethylene and 133a, thereby making up for the relatively low global conversion of the reagents.

公开(公告)号：US5414167A

公开(公告)日：1995-05-09

申请号：US234708

申请日：1994-04-28

Applicant: Letanzio Bragante ,  Paolo Cuzzato ,  Antonio Masiero

Inventor： Letanzio Bragante ,  Paolo Cuzzato ,  Antonio Masiero

IPC: B01J23/26 ,  C07C17/38 ,  C07C17/389 ,  C07C17/395 ,  C07C19/08 ,  C07C19/12

CPC classification number: C07C17/389 ,  C07C17/395

Abstract: The 1,1,2-trifluoro-1,2-dichloroethane content is reduced or removed from 1,1,1-trifluoro-2,2-dichloroethane by contacting a gaseous mixture comprising said compounds with chrome oxide (Cr.sub.2 O.sub.3) either as such or supported, at temperatures from 180.degree. to 400.degree. C.

Abstract translation: 通过使包含所述化合物的气体混合物与氧化铬（Cr 2 O 3）接触，将1,1,2-三氟-1,2-二氯乙烷含量从1,1,1-三氟-2,2-二氯乙烷中还原或除去 或在180°至400℃的温度下负载

公开(公告)号：US06323379B1

公开(公告)日：2001-11-27

申请号：US09568594

申请日：2000-05-11

Applicant: Paolo Cuzzato ,  Letanzio Bragante ,  Francesco Rinaldi

Inventor： Paolo Cuzzato ,  Letanzio Bragante ,  Francesco Rinaldi

IPC: C07C1908

CPC classification number: B01J27/125 ,  B01J23/26 ,  C07C17/37 ,  C07C19/08

Abstract: A process for obtaining pentafluoroethane HFC 125 by dismutation of gaseous tetrafluorochloroethane HCFC 124, at temperatures in the range 200°-300° C., on a trivalent chromium oxide (Cr2O3) catalyst, supported on aluminum fluoride, by feeding HF in such amount that the HCFC 124/HF molar ratio is in the range 10/1-1/1.

Abstract translation: 通过将氟化氢负载在负载在氟化铝上的三价铬氧化物（Cr 2 O 3）催化剂上，在200℃-300℃的温度范围内气化的四氟氯乙烷HCFC 124的取代，通过将HF加入到这样的量中来获得五氟乙烷HFC 125的方法， HCFC 124 / HF的摩尔比在10 / 1-1 / 1的范围内。

公开(公告)号：US06232514B1

公开(公告)日：2001-05-15

申请号：US08812311

申请日：1997-03-05

Applicant: Paolo Cuzzato ,  Antonio Masiero ,  Francesco Rinaldi

Inventor： Paolo Cuzzato ,  Antonio Masiero ,  Francesco Rinaldi

IPC: C07C1700

CPC classification number: B01J23/26 ,  C07C17/206 ,  C07C19/08

Abstract: Process for preparing pentafluoroethane (HFC-125) wherein 1,1,1-trifluorodichloroethane (HFC-123) is reacted with HF at a temperature from 310° to 380° C., in the presence of a catalyst comprising Cr2O3 supported on preformed AlF3. HFC-125 is obtained with high yields (up to 60-70% and over), high conversions (over 80%) and high selectivity, i.e. formation of by-product in very low amounts (5% by moles at most) Moreover, the catalyst maintains a high activity for a long time also with high organic charges.

Abstract translation: 制备五氟乙烷（HFC-125）的方法，其中1,1,1-三氟二氯乙烷（HFC-123）与HF在310℃至380℃的温度下，在载有预先形成的AlF 3的Cr 2 O 3 。 以高产率（高达60-70％及以上），高转化率（超过80％）和高选择性获得HFC-125，即以非常低的量（最多5摩尔％）形成副产物。此外， 催化剂长时间保持高活性，同时也具有高有机电荷。

公开(公告)号：US06187975B1

公开(公告)日：2001-02-13

申请号：US09333683

申请日：1999-06-16

Applicant: Letanzio Bragante ,  Paolo Cuzzato

Inventor： Letanzio Bragante ,  Paolo Cuzzato

IPC: C07C1708

CPC classification number: C07C17/087 ,  Y02P20/582 ,  C07C19/08

Abstract: Perfluoropropene (PFP) hydrofluorination process in gaseous phase to obtain CF3—CHF—CF3 (A-227ea), characterized in that as catalyst fluorinated alumina containing at least 90% by weight of AlF3, is used, the HF/PFP molar ratios range from about 4:1 to 20:1, the hydrofluorination process temperature being in the range 320°-420° C.

Abstract translation: 全氟丙烯（PFP）氢氟化方法，得到CF 3 -CHF-CF 3（A-227ea），其特征在于使用含有至少90重量％AlF 3的催化剂氟化氧化铝，HF / PFP摩尔比范围为 约4：1至20：1，氢氟化处理温度在320°-420°C的范围内

公开(公告)号：US5919728A

公开(公告)日：1999-07-06

申请号：US843356

申请日：1997-04-15

Applicant: Francesco Rinaldi ,  Paolo Cuzzato ,  Letanzio Bragante

Inventor： Francesco Rinaldi ,  Paolo Cuzzato ,  Letanzio Bragante

IPC: C01G37/00 ,  B01J23/26 ,  B01J27/125 ,  B01J27/132 ,  B01J27/135 ,  B01J27/138 ,  C07C17/20 ,  C07C17/21 ,  C07C19/08

CPC classification number: B01J27/125 ,  B01J23/26 ,  C07C17/206 ,  C07C17/21

Abstract: A fluorination catalyst based on of an amorphous Cr (III) compound and on a compound of another metal selected from Mg, Ca, Sr, Ba, Sc, Ti and Zr, wherein the atomic ratio of Cr/other metal is between 50:1 and 1:1, said compounds are supported on a AlF.sub.3 support and being prepared by impregnating the support with a concentrated aqueous solution containing a soluble Cr (III) salt and a soluble salt of the other metal. The catalyst can be used in gaseous phase reactions.

Abstract translation: 一种基于无定形Cr（III）化合物和选自Mg，Ca，Sr，Ba，Sc，Ti和Zr的另一种金属的化合物的氟化催化剂，其中Cr /其它金属的原子比为50:1 和1：1，所述化合物负载在AlF 3载体上，并通过用含有可溶性Cr（III）盐和另一种金属的可溶性盐的浓缩水溶液浸渍载体来制备。 催化剂可用于气相反应。

公开(公告)号：US5463151A

公开(公告)日：1995-10-31

申请号：US337128

申请日：1994-11-10

Applicant: Paolo Cuzzato ,  Antonio Masiero

Inventor： Paolo Cuzzato ,  Antonio Masiero

IPC: B01J27/12 ,  B01J23/26 ,  B01J27/125 ,  C07B61/00 ,  C07C17/04 ,  C07C17/10 ,  C07C17/20 ,  C07C17/21 ,  C07C19/08 ,  C07C17/08

CPC classification number: C07C17/206 ,  B01J23/26 ,  B01J27/125 ,  C07C17/21

Abstract: 1,1,1,2-tetrafluoroethane (134a) is prepared by reacting, in the gas phase, trichloroethylene with 1,1,1-trifluorochloroethane (133a) and hydrofluoric acid with trichloroethylene/133a molar ratios ranging from 5/95 to 50/50, in the presence of a catalyst consisting of Cr.sub.2 O.sub.3 carried on AlF.sub.3.The process provides 134a yields higher than 90% and permits an exceptionally long life of the catalyst. In this way it is possible to realize a continuous process by recycling the unreacted trichloroethylene and 133a, thereby making up for the relatively low global conversion of the reagents.