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    • 6. 发明授权
    • Liquid phase catalytic fluorination of hydrochlorocarbon and
hydrochlorofluorocarbon
    • 液相催化氟化氟氯烃和氢氯氟烃
    • US6023004A
    • 2000-02-08
    • US744157
    • 1996-11-12
    • Alagappan ThenappanHsueh S. TungRobert L. Bell
    • Alagappan ThenappanHsueh S. TungRobert L. Bell
    • B01J27/10B01J27/132B01J27/135C07B61/00C07C17/00C07C17/087C07C17/20C07C19/08C07C17/08
    • C07C17/206C07C17/00C07C17/087Y10S526/906Y10S526/913
    • A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafloropropane. Suitable catalysts include (i) a pentavalent molybdenum halide; (ii) a tetravalent tin halide; (iii) a tetravalent titanium halide; (iv) a mixture of a pentavalent tantalum halide with a tetravalent tin halide; (v) a mixture of a pentavalent tantalum halide with a tetravalent titanium halide; (vi) a mixture of a pentavalent niobium halide with a tetravalent tin halide; (vii) a mixture of a pentavalent niobium halide with a tetravalent titanium halide; (viii) a mixture of a pentavalent antimony halide with a tetravalent tin halide; (ix) a mixture of a pentavalent antimony halide with a tetravalent titanium halide; (x) a mixture of a pentavalent molybdenum halide with a tetravalent tin halide; (xi) a mixture of a pentavalent molybdenum halide with a tetravalent titanium halide and (xii) a mixture of a pentavalent antimony halide with a trivalent antimony halide. Products of this process are useful in a variety of applications including solvents, blowing agents, and refrigerants.
    • 在液相中氢氯碳氢化合物和氢氯氟烃的催化氟化的方法。 该方法可用于氟化氢氯丙烷,氢氯氟丙烷,氢氯丙烯和氢氯氟丙烯,最特别用于将1,1,1,3,3-五氯丙烷氟化为1,1,1,3,3-五氟丙烷。 合适的催化剂包括(i)五价钼卤化物; (ii)四价卤化锡; (iii)四价钛卤化物; (iv)五价卤化钽与四价卤化锡的混合物; (v)五价钽卤化物与四价钛卤化物的混合物; (vi)五价铌卤化物与四价卤化锡的混合物; (vii)五价铌卤化物与四价钛卤化物的混合物; (viii)五价锑卤化物与四价卤化锡的混合物; (ix)五价锑卤化物与四价钛卤化物的混合物; (x)五价钼卤化物与四价卤化锡的混合物; (xi)五价钼卤化物与四价卤化钛的混合物,(xii)五价锑卤化物与三价卤化锑的混合物。 该方法的产品可用于各种应用,包括溶剂,发泡剂和制冷剂。
    • 10. 发明授权
    • Process for the purification of a pentafluoroethane azeotrope
    • 纯化五氟乙烷共沸物的方法
    • US5346595A
    • 1994-09-13
    • US23827
    • 1993-02-23
    • Paul G. ClemmerHsueh S. TungAddison M. Smith
    • Paul G. ClemmerHsueh S. TungAddison M. Smith
    • B01D3/14C07B63/00C07C17/383C07C19/08C07C17/38
    • C07C17/383B01D3/14Y10S203/13
    • The invention generally relates to a process for the purification of a component of a binary azeotrope in which the composition of the azeotrope changes by about 10 mole percent with pressure comprising:(a) subjecting a binary azeotrope to a distillation step in which most of one of the binary components is removed as distillate (distillate 1) with the bottoms (bottoms 1) enriched in the other component;(b) subjecting distillate 1 to at least one additional distillation step conducted at a different pressure in which most of the component recovered as bottoms 1 is removed as distillate 2 with the bottoms 2 enriched in the component enriched in distillate 1;(c) optionally repeating step (b) as many times as desired; and(d) recovering the desired purified component.The invention is particularly useful in the purification of pentafluoroethane in a pentafluoroethane/chloropentafluoroethane azeotrope.
    • 本发明一般涉及纯化二元共沸物组分的方法,其中共沸物的组成随压力变化约10摩尔%,包括:(a)使二元共沸物进行蒸馏步骤,其中大部分 的二元组分作为馏出物(馏出物1)除去富含其它组分的塔底物(塔底物1); (b)使馏出物1进行至少一个另外的蒸馏步骤,在不同的压力下进行另外的蒸馏步骤,其中作为塔底馏出物1回收的大部分组分作为馏出物2被除去,富含富含馏分1的组分富含塔底物2; (c)任选地重复步骤(b)多次; 和(d)回收所需的纯化组分。 本发明特别可用于五氟乙烷/氯五氟乙烷共沸物中五氟乙烷的提纯。