[특허]Process for the manufacture of 1,1,1,3,3-pentafluoropropane

[미국특허] Process for the manufacture of 1,1,1,3,3-pentafluoropropane 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C07C-019/08 C07C-017/34
출원번호	US-0005400 (1998-01-09)
발명자 / 주소	Nappa Mario Joseph Rao V. N. Mallikarjuna Sievert Allen Capron
출원인 / 주소	E. I. du Pont de Nemours and Company
인용정보	피인용 횟수 : 16 인용 특허 : 4

초록 ▼

A process is disclosed for producing the hydrofluorocarbon CF.sub.3 CH.sub.2 CHF.sub.2. The process involves dehydrofluorinating CF.sub.3 CH.sub.2 CF.sub.3 at an elevated temperature in the vapor phase over a catalyst of (1) aluminum fluoride, (2) fluorided alumina, (3) metal supported on a trivalent aluminum compound containing fluoride anion, (4) lanthanum fluoride, (5) fluorided lanthanum oxide, (6) metal supported on a trivalent lanthanum compound containing fluoride anion, (7) trivalent chromium compounds and/or (8) catalysts of (a) at least one compound selected from the oxides, fluorides and oxyfluorides of magnesium, zinc and mixtures of magnesium and zinc, and optionally (b) at least one compound selected from the oxides, fluorides and oxyfluorides of aluminum, provided that the atomic ratio of aluminum to the total of magnesium and zinc in said catalyst is about 1:4, or less, to produce a product containing CF.sub.3 CH.dbd.CF.sub.2 and HF; and reacting the CF.sub.3 CH.dbd.CF.sub.2 in the vapor phase with hydrogen over a hydrogenation catalyst in the presence of HF to produce CF.sub.3 CH.sub.2 CHF.sub.2.

대표청구항 ▼

[ What is claimed is:] [1.] A process for producing CF.sub.3 CH.sub.2 CHF.sub.2 comprising the steps of:dehydrofluorinating CF.sub.3 CH.sub.2 CF.sub.3 at an elevated temperature in the vapor phase over a catalyst selected from the group consisting of (1) aluminum fluoride, (2) fluorided alumina, (3) metal supported on a trivalent aluminum compound containing fluoride anion, (4) lanthanum fluoride, (5) fluorided lanthanum oxide, (6) metal supported on a trivalent lanthanum compound containing fluoride anion, (7) trivalent chromium compounds, (8) catalysts of (a) at least one compound selected from the oxides, fluorides and oxyfluorides of magnesium, zinc and mixtures of magnesium and zinc, and optionally (b) at least one compound selected from the oxides, fluorides and oxyfluorides of aluminum, provided that the atomic ratio of aluminum to the total of magnesium and zinc in said catalyst is about 1:4, and mixtures of said catalysts (1) to (8) to produce a product containing CF.sub.3 CH.dbd.CF.sub.2 and HF; andreacting said CF.sub.3 CH.dbd.CF.sub.2 in the vapor phase with hydrogen over a hydrogenation catalyst in the presence of HF, to produce CF.sub.3 CH.sub.2 CHF.sub.2.

이 특허에 인용된 특허 (4) 인용/피인용 타임라인 분석

Rao V. N. M. (Wilmington DE), Catalytic hydrogenolysis.
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Carlson Emery J. (Chatham NJ) Armor John N. (Morris Plains NJ) Cunningham William J. (Williamsville NY) Smith Addison M. (Amherst NY), Chromium aerogel method of producing same and fluorinating process utilizing same.
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Nappa Mario J. (Newark DE) Rao V. N. Mallikarjuna (Wilmington DE), Process for the manufacture of 1,1,1,2,3,-pentafluoropropane.
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Nappa Mario J. (Newark DE) Sievert Allen C. (Elkton MD), Process for the manufacture of 1,1,1,3,3,3,-hexafluoropropane.
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이 특허를 인용한 특허 (16) 인용/피인용 타임라인 분석

Singh, Rajiv R.; Knopeck, Gary, Aerosol compositions containing fluorine substituted olefins and methods and systems using same.
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Mario Joseph Nappa ; V.N.Mallikarjuna Rao, Catalytic manufacture of pentafluoropropenes.
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Nappa Mario Joseph ; Rao V. N. Mallikarjuna, Catalytic manufacture of vinyl fluoride.
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Norman Herron ; Leo E. Manzer ; Munirpallam A. Subramanian, Fischer-Tropsch processes and catalysts using fluorided supports.
상세보기
Schweizer,Albert E.; Jones,Mark E.; Hickman,Daniel A., Oxidative halogenation and optional dehydrogenation of c3+hydrocarbons.
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Gulotty, Jr., Robert J.; Jones, Mark E.; Hickman, Daniel A., Oxyhalogenation process using catalyst having porous rare earth halide support.
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Gulotty, Jr., Robert J.; Jones, Mark E.; Hickman, Daniel A., Oxyhalogenation process using catalyst having porous rare earth halide support.
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Van Der Puy, Michael; Cook, George R.; Scheidle, Peter H.; Uhrich, Kevin D.; Wang, Haiyou; Tung, Hsueh Sung, Process for manufacture of fluorinated olefins.
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Jones, Mark E.; Olken, Michael M.; Hickman, Daniel A., Process for the conversion of ethylene to vinyl chloride and novel catalyst compositions useful for such process.
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Eicher, Johannes; Mross, Stefan, Process for the manufacture of 1,1,1,3,3-pentafluoropropane.
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Van Der Puy, Michael; Cook, George R.; Scheidle, Peter H.; Uhrich, Kevin D., Process for the manufacture of fluorinated alkanes.
상세보기
Van Der Puy, Michael; Cook, George R.; Sheidle, Peter H.; Uhrich, Kevin D.; Wang, Haiyou; Tung, Hsueh Sung, Process for the manufacture of fluorinated olefins.
상세보기
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.
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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.
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Hickman, Daniel A.; Henley, John P.; Jones, Mark E.; Marshall, Kenric A.; Reed, Daniel J.; Clarke, William D.; Olken, Michael M.; Walko, Lee E., Process for vinyl chloride manufacture from ethane and ethylene with immediate HCl recovery from reactor effluent.
상세보기
Henley, John P.; Jones, Mark E.; Hickman, Daniel A.; Marshall, Kenric A.; Reed, Daniel J.; Clarke, William D.; Olken, Michael M.; Walko, Lee E., Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent.
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[미국특허] Process for the manufacture of 1,1,1,3,3-pentafluoropropane 원문보기