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특허 상세정보

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Catalytic hydrogenolysis

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C07C-017/10   
미국특허분류(USC) 570/176 ; 570/153 ; 570/175
출원번호 US-0734407 (1991-07-23)
발명자 / 주소
  • Rao V. N. M. (Wilmington DE)
출원인 / 주소
  • E. I. Du Pont de Nemours and Company (Wilmington DE 02)
인용정보 피인용 횟수 : 43  인용 특허 : 0
초록

Catalytic hydrogenolysis of fluorohalocarbons (e.g., CFCs) and fluorohalohydrocarbons (e.g., HCFCs), using catalysts of Re, Co, Ni, Ru, Rh, Pd, Os, Ir, and/or Pt on a carbon having low ash content. Preferred catalysts use carbon which is acid-washed, first with an acid other than hydrofluoric acid and then with hydrofluoric acid; and also have a low content of phosphorus, sulfur, potassium, sodium and iron.

대표
청구항
▼

A process for the catalytic hydrogenolysis of a cyclic or acyclic compound having the formula CnHmFpXq wherein n is an integer from 1 to 6, m is an integer from 0 to 12, p is an integer from 1 to 13, q is an integer from 1 to 13 and each X is independently selected from Cl and Br, provided that m+p+q equals 2n+2 when the compound is saturated and acyclic, equals 2n when the compound is saturated and cyclic or is olefinic and acyclic, and equals 2n-2 when the compound is olefinic and cyclic, using a catalyst of at least one metal selected from the group c...

이 특허를 인용한 특허 (43)

  1. Nappa Mario Joseph ; Rao V. N. Mallikarjuna ; Sievert Allen Capron, 1,1,1,2,3,3,3-heptafluoropropane manufacturing process.
  2. Sievert, Allen Capron; Nappa, Mario Joseph; Mahler, Barry Asher, 1,2,3,3,3-pentafluoropropene production processes.
  3. Miller,Ralph Newton; Nappa,Mario Joseph; Rao,Velliyur Nott Mallikarjuna; Sievert,Allen Capron, Azeotrope compositions comprising 2,3,3,3-tetrafluoropropene and hydrogen fluoride and uses thereof.
  4. Ahn, Byoung Sung; Song, Jung Hwan; Moon, Dong Ju; Park, Kun You, Catalyst and method for producing 1,1-difluoroethane.
  5. Sun, Xuehui; Nappa, Mario Joseph, Catalytic dehydrochlorination of hydrochlorofluorocarbons.
  6. Cheung, Patricia; Lamarca, Concetta, Catalytic hydrogenation of fluoroolefins, alpha-alumina supported palladium compositions and their use as hydrogenation catalysts.
  7. Cheung, Patricia; Sievert, Allen Capron; Lamarca, Concetta, Catalytic hydrogenation of fluoroolefins, alpha-alumina supported palladium compositions and their use as hydrogenation catalysts.
  8. Nappa, Mario Joseph; Toton, Donald J.; Rao, Velliyur Nott Mallikarjuna, Catalytic isomerization between E and Z isomers of 1,2,3,3,3-pentafluoropropene.
  9. Nappa, Mario Joseph, Catalytic isomerization of 2,3,3,3-tetrafluoropropene.
  10. Mario Joseph Nappa ; V.N.Mallikarjuna Rao, Catalytic manufacture of pentafluoropropenes.
  11. Nappa Mario Joseph ; Rao V. N. Mallikarjuna, Catalytic manufacture of vinyl fluoride.
  12. Rao V. N. Mallikarjuna (Wilmington DE), Catalytic process for producing CF3CH2F.
  13. Mahler, Barry Asher; Nappa, Mario Joseph; Knapp, Jeffrey P., Compositions comprising 1,1,1,2,3-pentafluoropropane or 2,3,3,3- tetrafluoropropene.
  14. Mahler, Barry Asher; Nappa, Mario Joseph; Knapp, Jeffrey P, Compositions comprising 1,1,1,2,3-pentafluoropropane or 2,3,3,3-tetrafluoropropene.
  15. Mahler, Barry Asher; Nappa, Mario Joseph; Knapp, Jeffrey P., Compositions comprising 3,3,3-trifluoropropyne.
  16. Nappa, Mario Joseph, Coproduction of hydrofluoroolefins.
  17. Rao V. N. Mallikarjuna (Wilmington DE), Hydrodehalogenation catalysts and their preparation and use.
  18. Francis Anthony Via ; Grigorii Lev Soloveichik ; Philip George Kosky ; Walter Vladimir Cicha, Method for producing phosgene.
  19. Francis Anthony Via ; Grigorii Lev Soloveichlk ; Philip George Kosky ; Walter Vladimir Cicha, Method for producing phosgene.
  20. Cicha Walter V. ; Manzer Leo Ernest, Phosgene manufacturing process.
  21. Cicha Walter Vladimir ; Manzer Leo E., Phosgene manufacturing process.
  22. Rao Velliyur Nott Mallikarjuna, Process for manufacture of high purity 1,1-dichlorotetrafluoroethane.
  23. Rao Velliyur Nott Mallikarjuna, Process for manufacture of trichlorotrifluoroethanes.
  24. Takagi, Hirokazu; Okamoto, Hidekazu; Kawaguchi, Satoshi; Takeuchi, Yu; Watanabe, Kunio; Yanase, Koichi; Nomura, Shingo, Process for producing 2,3,3,3-tetrafluoropropene.
  25. Cicha Walter Vladimir ; Manzer Leo Ernest, Process for producing oxochlorides of sulfur.
  26. Cicha Walter Vladimir ; Manzer Leo Ernest, Process for producing oxochlorides of sulfur.
  27. Nappa Mario Joseph ; Rao V. N. Mallikarjuna ; Sievert Allen Capron, Process for the manufacture of 1,1,1,3,3-pentafluoropropane.
  28. Nappa Mario Joseph ; Rao V. N. Mallikarjuna ; Sievert Allen Capron, Process for the manufacture of 1,1,1,3,3-pentafluoropropane.
  29. Manogue, William H.; Rao, V. N. Mallikarjuna; Sievert, Allen Capron; Swearingen, Steven H., Process for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof.
  30. Requieme Benoit,FRX ; Perdrieux Sylvain,FRX ; Cheminal Bernard,FRX ; Lacroix Eric,FRX ; Lantz Andre,FRX, Process for the manufacture of difluoromethane.
  31. Requieme, Benoit; Perdrieux, Sylvain; Cheminal, Bernard; Lacroix, Eric; Lantz, Andre, Process for the manufacture of difluoromethane.
  32. Rao,Velliyur Nott Mallikarjuna; Sievert,Allen C., Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane.
  33. Rao,Velliyur Nott Mallikarjuna; Sievert,Allen C., Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,3,3,3-hexafluoropropane.
  34. Miller, Ralph Newton; Nappa, Mario Joseph; Rao, Velliyur Nott Mallikarjuna; Sievert, Allen Capron, Processes for production and purification of hydrofluoroolefins.
  35. V. N. Mallikarjuna Rao ; Allen Capron Sievert, Processes for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof.
  36. Rao V. N. Mallikarjuna (Wilmington DE) Walczak Francis J. (New Castle DE), Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF.
  37. Velliyur Nott Mallikarjuna Rao ; Francis John Walczak, Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF.
  38. Velliyur Nott Mallikarjuna Rao ; Francis John Walczak, Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF.
  39. Furmanek Paul S. ; Glasscock David A. ; Keane ; Jr. Michael, Production of dihalomethanes containing fluorine and azeotropes of dihalomethanes containing chlorine with HF.
  40. Furmanek Paul S. ; Glasscock David A. ; Keane ; Jr. Michael ; Mahler Barry A. ; Rao V. N. Mallikarjuna, Production of dihalomethanes containing fluorine and azeotropes of dihalomethanes containing chlorine with HF.
  41. Sun, Xuehui; Nappa, Mario Joseph, Selective catalytical dehydrochlorination of hydrochlorofluorocarbons.
  42. Sun, Xuehui; Nappa, Mario Joseph, Selective catalytical dehydrochlorination of hydrochlorofluorocarbons.
  43. Corbin David R. (West Chester PA) Diebold Michael P. (Wilmington DE) Mahler Barry A. (Glen Mills PA), Separation of chloropentafluoroethane from pentafluoroethane.

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