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    • 7. 发明申请
    • Compositions containing chromium, oxygen and gold, their preparation, and their use as catalysts and catalyst precursors
    • 含有铬,氧和金的组合物,它们的制备及其作为催化剂和催化剂前体的用途
    • US20080207964A1
    • 2008-08-28
    • US12070827
    • 2008-02-21
    • Velliyur Nott Mallikarjuna RaoAllen Capron SievertH. David RosenfeldShekhar Subramoney
    • Velliyur Nott Mallikarjuna RaoAllen Capron SievertH. David RosenfeldShekhar Subramoney
    • C07C17/04C07C17/02B01J27/132B01J23/68
    • C07C19/08B01J23/685B01J35/0013B01J35/006B01J37/0201B01J37/03B01J37/14B01J37/26C07C17/206C07C17/21C07C17/23C07C17/25C07C21/18C07C19/10
    • A catalyst composition is disclosed that includes chromium, oxygen, and gold as essential constituent elements. The amount of gold in the composition is from about 0.05 atom % to about 10 atom % based on the total amount of chromium and gold. Also disclosed is a process for changing the fluorine distribution (i.e., content and/or arrangement) in a hydrocarbon or halogenated hydrocarbon in the presence of the catalyst composition; and methods for preparing said catalyst composition. One preparation method involves; (a) co-precipitating a solid by adding ammonium hydroxide (aqueous ammonia) to an aqueous solution of a soluble gold salt and a soluble chromium salt that contains at least three moles of nitrate per mole of chromium in the solution and has a gold content of from about 0.05 atom % to about 10 atom % of the total content of gold and chromium in the solution to form an aqueous mixture containing co-precipitated solid; (b) drying the co-precipitated solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume. Another preparation method involves (a) impregnating solid chromium oxide with a solution of a soluble gold salt, (b) drying the impregnated chromium oxide prepared in (a); and optionally, (c) calcining the dried solid. A third preparation method involves (a) evaporating an aqueous solution of chromium(VI) oxide and a soluble gold salt to form a solid; (b) drying the solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume.
    • 公开了一种催化剂组合物,其包括铬,氧和金作为必要的组分元素。 基于铬和金的总量,组合物中的金的量为约0.05原子%至约10原子%。 还公开了在催化剂组合物存在下改变烃或卤代烃中的氟分布(即含量和/或排列)的方法; 以及制备所述催化剂组合物的方法。 一种制备方法涉及到 (a)通过向溶液中每摩尔铬含有至少三摩尔硝酸盐的可溶性金盐和可溶性铬盐的水溶液中加入氢氧化铵(氨水)共沉淀固体,并且具有金含量 为溶液中金和铬的总含量的约0.05原子%至约10原子%,以形成含共沉淀固体的含水混合物; (b)干燥(a)中形成的共沉淀固体; 和(c)在(b)中形成的干燥固体在含有至少10体积%氧气的气氛中煅烧。 另一种制备方法包括(a)用可溶性金盐溶液浸渍固体氧化铬,(b)干燥(a)中制备的浸渍的氧化铬; 和(c)煅烧干燥的固体。 第三制备方法包括(a)蒸发氧化铬(VI)的水溶液和可溶性金盐以形成固体; (b)干燥(a)中形成的固体; 和(c)在(b)中形成的干燥固体在含有至少10体积%氧气的气氛中煅烧。
    • 8. 发明授权
    • Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 2,3,3,3-tetrafluoropropene
    • 制备1,3,3,3-四氟丙烯和/或2,3,3,3-四氟丙烯的方法
    • US07678949B2
    • 2010-03-16
    • US11988983
    • 2006-08-04
    • Velliyur Nott Mallikarjuna RaoH. David RosenfeldAllen Capron SievertShekhar Subramoney
    • Velliyur Nott Mallikarjuna RaoH. David RosenfeldAllen Capron SievertShekhar Subramoney
    • C07C17/00
    • C07C21/18B01J23/868B01J37/26C07C17/21C07C17/23C07C17/25C07C19/10
    • A process for the manufacture of CF3CH═CHF and/or CF3CF═CH2 is disclosed. The process involves (a) reacting HF and chlorine and at least one halopropene of the formula CX3CCI═CCIX (where each X is independently F or Cl) to produce a product including both CF3CCI2CCIF2 and CF3CCIFCCI2F; (b) reacting CF3CCI2CCIF2 and CF3CCIFCCI2F produced in (a) with hydrogen to produce a product including both CF3CH2CHF2 and CF3CHFCH2F; (c) dehydrofluorinating CF3CH2CHF2 and CF3CHFCH2F produced in (b) to produce a product including both CF3CH═CHF and CF3CF═CH2; and (d) recovering CF3CH═CHF and/or CF3CF═CH2 from the product produced in (c). In (a), both CF3CCI2CCIF2 and CF3CCIFCCI2F are produced in the presence of a chlorofluorination catalyst consisting of (i) compositions comprising a crystalline alpha-chromium oxide where at least 0.05 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by copper, and (ii) compositions of (i) which have been treated with a fluorinating agent.
    • 公开了制造CF 3 CH = CHF和/或CF 3 CF = CH 2的方法。 该方法包括(a)使HF和氯与至少一种式CX3CCI = CCIX的卤代丙烯(其中每个X独立地为F或Cl)反应以产生包含CF 3 CCl 2 CCIF 2和CF 3 CClFCCI 2 F的产物; (b)使(a)中制备的CF 3 CCl 2 CCIF 2和CF 3 CClFCCI 2 F与氢反应以产生包含CF 3 CH 2 CHF 2和CF 3 CHFCH 2 F的产物; (c)在(b)中制备的CF 3 CH 2 CHF 2和CF 3 CHFCH 2 F脱氟化氟化产生包括CF 3 CH = CHF和CF 3 CF = CH 2的产物; 和(d)从(c)中制备的产物中回收CF 3 CH = CHF和/或CF 3CF≡CH2。 在(a)中,CF3CCI2CCIF2和CF3CCIFCCI2F都是在氯氟化催化剂存在下制备的,所述氯氟化催化剂由(i)包含结晶α-氧化铬的组合物组成,其中至少0.05原子%的α-氧化铬晶格中的铬原子被替换 和(ii)已经用氟化剂处理的(i)的组合物。