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6 条记录 (耗时 0.016 秒)

    Process for preparing metallocene catalyst for polyolefin polymerization
    2.
    发明授权
    Process for preparing metallocene catalyst for polyolefin polymerization 失效
    制备用于聚烯烃聚合的茂金属催化剂的方法

    公开(公告)号：US5869417A

    公开(公告)日：1999-02-09

    申请号：US697978

    申请日：1996-09-03

    申请人： Seong-Ihl Woo ,  Young-Soo Ko

    发明人： Seong-Ihl Woo ,  Young-Soo Ko

    IPC分类号： B01J31/22 ,  C08F4/60 ,  C08F4/64 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F110/02 ,  B01J31/00 ,  B01J37/00 ,  C08F4/02

    CPC分类号： B01J31/143 ,  B01J31/1616 ,  B01J31/2295 ,  C08F10/00 ,  B01J2531/40 ,  B01J2531/46 ,  B01J2531/48 ,  B01J2531/49 ,  C08F110/02 ,  C08F4/65912 ,  C08F4/6592 ,  C08F4/65922

    摘要： The present invention provides a process for preparing a highly active metallocene catalyst by which polyolefin having improved properties can be prepared with a small amount of cocatalyst. A process for preparing a metallocene catalyst of the invention comprises the steps of: modifying the surface of a zeolite or molecular sieve inorganic carrier possessing crystalline pores of 7 to 100 .ANG. size by the addition of an organic solvent and organic aluminum compound under an environment of inert gas and reacting at a constant temperature, and drying; and, impregnating a metallocene compound into the inorganic carrier by the addition of an organic solvent and said metallocene compound, whose diameter is smaller than the diameters of said pores of the inorganic carrier, to the inorganic carrier and reacting at a constant temperature, and drying. In accordance with the present invention, a highly active metallocene catalyst can be prepared in an economical and efficient manner.

    摘要翻译： 本发明提供一种制备高活性金属茂催化剂的方法，通过该方法可以用少量助催化剂制备具有改进性能的聚烯烃。 一种制备本发明茂金属催化剂的方法包括以下步骤：通过在有机溶剂和有机铝化合物的环境中加入有机溶剂和有机铝化合物来改性具有7至100安培大小的结晶孔的沸石或分子筛无机载体的表面 惰性气体并在恒温下反应并干燥; 并且通过加入有机溶剂和直径小于无机载体的孔的直径的茂金属化合物将茂金属化合物浸渍到无机载体中，并将​​其在恒温下反应并干燥 。 根据本发明，可以以经济和有效的方式制备高活性金属茂催化剂。

    Modified magnesium oxide catalyst
    3.
    发明授权
    Modified magnesium oxide catalyst 失效
    改性氧化镁催化剂

    公开(公告)号：US5371306A

    公开(公告)日：1994-12-06

    申请号：US175297

    申请日：1993-12-29

    申请人： Seong-Ihl Woo ,  Won-Choon Choi ,  Kwang-Ho Park ,  Jin-Do Kim

    发明人： Seong-Ihl Woo ,  Won-Choon Choi ,  Kwang-Ho Park ,  Jin-Do Kim

    IPC分类号： B01J21/10 ,  B01J23/34 ,  B01J23/889 ,  C07C37/11 ,  C07C37/00 ,  B01J23/00 ,  B01J23/32

    CPC分类号： B01J23/8892 ,  B01J21/10 ,  B01J23/34 ,  C07C37/16

    摘要： The present invention relates to a novel oxide catalyst, more specifically, a novel modified magnesium oxide catalyst which is highly active and selective for ortho-alkylation of phenol.The catalysts for phenol alkylation of the invention are represented as Mg.sub.a Mn.sub.b L.sub.c T.sub.d Q.sub.e O.sub.x .wherein:L is vanadium or chromium;T is alkali metal, alkali earth metal, lead, bisumth, cobalt, aluminum, silicon., gallium, germanium or molybdenum;Q is antimony, cesium or iron;b/a=0 to 0.35(atomic molar ratio);c/a=0.01 to 0.35(atomic molar ratio);d/a=0 to 0.35(atomic molar ratio);e/c=0.1 to 10(atomic molar ratio); and,x is determined by oxidation state of each component.

    摘要翻译： 本发明涉及一种新型氧化物催化剂，更具体地说，涉及一种对苯酚进行正烷基化反应具有高活性和选择性的新型改性氧化镁催化剂。 本发明的苯酚烷基化催化剂表示为MgaMnbLcTdQeOx。 其中：L为钒或铬; T是碱金属，碱土金属，铅，二价，钴，铝，硅，镓，锗或钼; Q是锑，铯或铁; b / a = 0〜0.35（原子摩尔比）; c / a = 0.01〜0.35（原子摩尔比）; d / a = 0〜0.35（原子摩尔比）; e / c = 0.1〜10（原子摩尔比）; 并且x由每个组分的氧化态决定。

    Multicomponent oxide catalyst
    5.
    发明授权
    Multicomponent oxide catalyst 失效
    多组分氧化物催化剂

    公开(公告)号：US5470815A

    公开(公告)日：1995-11-28

    申请号：US175286

    申请日：1993-12-29

    申请人： Jong-Seob Kim ,  Seong-Ihl Woo

    发明人： Jong-Seob Kim ,  Seong-Ihl Woo

    IPC分类号： B01J23/31 ,  B01J23/887 ,  C07C253/24 ,  B01J23/10 ,  B01J23/28

    CPC分类号： B01J23/8876 ,  B01J23/31 ,  C07C253/24 ,  Y02P20/52

    摘要： The present invention relates to a novel multicomponent oxide catalyst, more specifically, a highly active and selective catalyst composition which plays a vital role to produce unsaturated nitrile compounds by reacting paraffinoid hydrocarbons with ammonia and oxygen. The formula of catalyst composition of the present invention is represented as A.sub.a B.sub.b C.sub.c D.sub.d In.sub.e Ga.sub.f Bi.sub.g Mo.sub.i O.sub.x. wherein:A is alkali metal, alkali earth metal, silver or copper;B is nickel, cobalt, iron, chromium, ruthenium, palladium or manganese;C is zinc, cadmium, cerium, tin, phosphorus, antimony, lead, tellurium, germanium or aluminum;D is titanium, zirconium, vanadium, niobium, tantalum, lanthanum, neodymium, gadolinium or tungsten; and, a, b, c, d, e, f, g and i is the mole of each component, wherein, a is 0 to 10; b is 0 to 5; c is 0 to 15; d is 0 to 14; e is 0 to 2; f is 0 to 7; g is 1 to 25; i is 12 to 40; and, 12.ltoreq.a+b+c+d+e+f+g.ltoreq.40.

    摘要翻译： 本发明涉及一种新型的多组分氧化物催化剂，更具体地说，涉及一种高活性和选择性的催化剂组合物，其通过使亚磷酸烷烃与氨和氧反应而产生不饱和腈化合物起重要作用。 本发明的催化剂组合物的配方表示为AaBbCcDdIne GafBigMoiOx。 其中：A为碱金属，碱土金属，银或铜; B是镍，钴，铁，铬，钌，钯或锰; C是锌，镉，铈，锡，磷，锑，铅，碲，锗或铝; D是钛，锆，钒，铌，钽，镧，钕，钆或钨; 和a，b，c，d，e，f，g和i是每个组分的摩尔数，其中a为0至10; b为0〜5; c为0〜15; d为0〜14; e为0〜2; f为0〜7; g为1〜25; 我是12到40岁 和12

    Catalyst for automotive lean-burn engine and process for preparing the same
    6.
    发明授权
    Catalyst for automotive lean-burn engine and process for preparing the same 失效

    公开(公告)号：US06627167B2

    公开(公告)日：2003-09-30

    申请号：US09756075

    申请日：2001-01-08

    申请人： Seong-Ihl Woo ,  Do-Kyoung Kim ,  Do-Heui Kim

    发明人： Seong-Ihl Woo ,  Do-Kyoung Kim ,  Do-Heui Kim

    IPC分类号： B01J29068

    CPC分类号： B01J37/0238 ,  B01D53/945 ,  B01J29/44 ,  Y02A50/2324 ,  Y02T10/22

    摘要： The present invention relates to a catalyst for automotive lean-burn engine comprising platinum impregnated on a zeolite support and a process for preparing the same. In accordance with the invention, the catalyst comprising a platinum-impregnated zeolite support can be prepared by sublimation, where the zeolite support effectively eliminates hydrocarbons from automotive exhaust gases by adsorption, and platinum as an active component of the catalyst exerts its catalytic activity through the direct decomposition of nitrogen oxides contained in automotive exhaust gases. Furthermore, the catalyst of the invention provides a widened temperature window for maximum catalytic activity and improved catalytic activity, compared to those of the conventional catalysts. Accordingly, the invented catalyst for automotive lean-burn engine can effectively remove polluting substances such as nitrogen oxides and hydrocarbon present in lean-burn exhaust gases by selective reduction in a continuous reactor, and may be useful in the post-treatment of automotive exhaust gases.