Preparation of palladium catalysts
    4.
    发明授权
    Preparation of palladium catalysts 失效
    钯催化剂的制备

    公开(公告)号:US5233064A

    公开(公告)日:1993-08-03

    申请号:US866645

    申请日:1992-04-09

    申请人: Neil A. Cooley

    发明人: Neil A. Cooley

    IPC分类号: B01J31/22 C07F15/00 C08G67/02

    CPC分类号: C08G67/02 C07F15/0066

    摘要: Palladium complexes having the general formula Pd(R'CO.sub.2).sub.2 X where R' is C.sub.1 to C.sub.10 alkyl or C.sub.6 to C.sub.10 aryl and X is a chelating ligand of formula (R.sup.2).sub.2 PYP(R.sup.2).sub.2 where the R.sup.2 groups are independently selected from C.sub.1 to C.sub.4 alkyl, phenyl or alkoxy substituted phenyl, and Y is --(CH.sub.2).sub.n -- where n=2 to 4 are provided. The complexes may be prepared by reacting the compounds Pd(R'CO.sub.2).sub.2 and (R.sup.2).sub.2 PYP(R.sup.2).sub.2 together in an aromatic solvent at a temperature of less than 60.degree. C. in amounts such that the molar ratio of the two compounds is in the range 1.2:1 to 1:1.2.

    Chiral auxiliaries and their use in the synthesis of chiral molecules
    5.
    发明授权
    Chiral auxiliaries and their use in the synthesis of chiral molecules 失效
    CHIRAL AUXILIARIES及其在CHIRAL MOLECULES合成中的应用

    公开(公告)号:US5210210A

    公开(公告)日:1993-05-11

    申请号:US694567

    申请日:1991-05-02

    申请人: Stephen G. Davies

    发明人: Stephen G. Davies

    摘要: Chiral imidazolidones and imidazolidinethiones having the general formula: ##STR1## where (a) Z is either oxygen or sulphur(b) the R groups are independently selected from hydrogen or R.sup.2 CO where R.sup.2 is C.sub.1 to C.sub.10 alkyl, C.sub.2 to C.sub.10 alkenyl or benzyl and(c) the two R.sup.1 groups are either (1) identical groups selected from C.sub.1 to C.sub.10 alkyl, phenyl or C.sub.1 to C.sub.6 alkyl or alkoxy substituted phenyl or (2) such that together they form an alkylene group of formula --(CH.sub.2).sub.n -- where n=3 to 8.Most preferred are those compounds where both R groups are R.sup.2 CO and there is a C.sub.2 axis of symmetry running along the CZ double bond. Compounds of formula (I) where at least one R group is R.sup.2 CO are efficient chiral auxiliaries for a range of asymmetric electrophilic substitution reactions when used in homochiral form. As such they are important tools for synthesising a range of chiral pharmaceuticals, agrochemicals and the like.

    Rock analyzer
    6.
    发明授权
    Rock analyzer 失效
    岩石分析仪

    公开(公告)号:US5178837A

    公开(公告)日:1993-01-12

    申请号:US590045

    申请日:1990-09-27

    申请人: Russell I. Crisp

    发明人: Russell I. Crisp

    IPC分类号: G01N31/12 G01N33/24

    CPC分类号: G01N33/241 G01N31/12

    摘要: A rock analyser includes a chamber containing a heater (2) and the sensor (6) of a hydrocarbon detector (7), the heater (2) being connectable to a source of power (5) and the sensor (6) being connected to the remainder of the hydrocarbon detector (7). The analyser determines the amount of hydrocarbon material present in the rock. It is portable and is useful for field screening tests to reduce the number of samples sent for laboratory analysis.

    摘要翻译: 岩石分析仪包括容纳加热器(2)和烃探测器(7)的传感器(6)的腔室,所述加热器(2)可连接到动力源(5),所述传感器(6)连接到 烃检测器(7)的其余部分。 分析仪确定岩石中存在的烃类物质的量。 它是便携式的,并且可用于现场筛选测试以减少发送用于实验室分析的样品数量。

    Apparatus for mixing vapor in a countercurrent column
    7.
    发明授权
    Apparatus for mixing vapor in a countercurrent column 失效
    用于在逆流柱中混合蒸气的装置

    公开(公告)号:US5145612A

    公开(公告)日:1992-09-08

    申请号:US704903

    申请日:1991-05-21

    IPC分类号: B01D3/00 B01D3/20

    CPC分类号: B01D3/008 B01D3/20

    摘要: The efficiency of mixing vapor in a countercurrent column (1) is improved by use of one or more vapor risers (6) each incorporating a mixing device (7). The method is suitable for use in countercurrent columns operating at high pressures or under vacuum. For high pressure operation a single riser is preferred positioned in the center of the distributor tray (5).

    摘要翻译: 通过使用一个或多个各自包含混合装置(7)的蒸汽提升管(6)来提高在逆流柱(1)中混合蒸汽的效率。 该方法适用于在高压或真空下运行的逆流柱。 对于高压操作,单个提升管优选地定位在分配器托盘(5)的中心。

    Method for breaking emulsions
    8.
    发明授权
    Method for breaking emulsions 失效
    破乳方法

    公开(公告)号:US5143109A

    公开(公告)日:1992-09-01

    申请号:US570052

    申请日:1990-08-20

    申请人: Spencer E. Taylor

    发明人: Spencer E. Taylor

    IPC分类号: B01D17/04 C10G33/00

    摘要: A method for recovering the surfactant from a dispersion or emulsion of oil and water containing a temperature sensitive surfactant which method comprises the steps of heating the dispersion or emulsion to a temperature above the cloud point of the surfactant under conditions of temperature and aqueous phase salinity such that the dispersion or emulsion breaks and separates into an oil layer, an aqueous layer and a surfactant layer, and recovering the surfactant layer.The recovered surfactant may be recycled for use in preparing further quantities of dispersion or emulsion, thus rendering the operation more economic.

    Syngas conversion catalyst, production and use thereof
    9.
    发明授权
    Syngas conversion catalyst, production and use thereof 失效
    合成气转化催化剂,其生产和使用

    公开(公告)号:US5118891A

    公开(公告)日:1992-06-02

    申请号:US739777

    申请日:1991-07-30

    IPC分类号: B01J23/58 C07C1/04

    摘要: A composition for use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons, the composition having formula: Ru.sub.z A.sub.b CeO.sub.x, wherein A is an alkali metal, x is a number such that the valence requirements of the other elements for oxygen is satisfied, a is greater than zero and less than 5% w/w, based on the total weight of the composition, b is in the range from zero to 10% w/w, based on the total weight of the composition, and Ce and O constitute the remainder of the composition, is produced by the steps of: (A) adding a solution or solutions of soluble compounds of the metals ruthenium and cerium, and optionally also an alkali metal compound, to a solution of a precipitant comprising a carbonate and/or a bicarbonate and/or a hydroxide of an alkali metal or ammonium under conditions whereby there is formed a precipitate comprising ruthenium and cerium, and optionally also an alkali metal, in the form of compounds thermally decomposable to the metals and/or their oxides, and (B) recovering the precipitate obtained in step (A).

    摘要翻译: 在将合成气转化为烃的还原活化后作为催化剂使用的组合物,具有式RuzAbCeOx的组合物,其中A是碱金属,x是满足其它元素对氧气的化合价要求的数 基于组合物的总重量,a大于零且小于5%w / w,b基于组合物的总重量,b在0至10%w / w的范围内,Ce和 O构成组合物的其余部分,是通过以下步骤制备的:(A)将金属钌和铈的可溶性化合物和任选的碱金属化合物的溶液或溶液加入到包含碳酸盐的沉淀剂的溶液中 和/或碱金属或铵的碳酸氢盐和/或氢氧化物,其中形成包含钌和铈的沉淀物,以及任选的碱金属,其形式为可热分解成金属的化合物 d /或其氧化物,和(B)回收步骤(A)中获得的沉淀物。