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28 条记录 (耗时 0.025 秒)

    Methods of making alkenyl alkanoates
    24.
    发明申请
    Methods of making alkenyl alkanoates 审中-公开
    制备烯基链烷酸酯的方法

    公开(公告)号：US20050181940A1

    公开(公告)日：2005-08-18

    申请号：US10993507

    申请日：2004-11-19

    申请人： Tao Wang ,  Les Wade ,  Ioan Nicolau ,  Barbara Kimmich ,  Victor Wong ,  Yumin Liu ,  Jun Han ,  Valery Sokolovskii ,  Alfred Hagemeyer ,  David Lowe

    发明人： Tao Wang ,  Les Wade ,  Ioan Nicolau ,  Barbara Kimmich ,  Victor Wong ,  Yumin Liu ,  Jun Han ,  Valery Sokolovskii ,  Alfred Hagemeyer ,  David Lowe

    IPC分类号： B01J23/66

    CPC分类号： B01J23/58 ,  B01J23/464 ,  B01J23/52 ,  B01J33/00 ,  B01J35/002 ,  B01J35/0026 ,  B01J35/008 ,  B01J35/0086 ,  B01J35/026 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1042 ,  B01J37/0201 ,  B01J37/0244 ,  B01J37/16 ,  C07C67/055 ,  C07C69/15

    摘要： The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre-catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre-catalyst that is produced from substantially chloride free catalytic components.

    摘要翻译： 本发明涉及与催化剂结构有关的至少四个不同方面，制备这些催化剂的方法和使用这些催化剂制备烯基链烷酸酯的方法。 本发明的单独或一起组合地涉及改进烯基链烷酸酯和VA的生产，特别是包括副产物的还原和提高的生产效率。 本发明的第一方面涉及包含铑或其它金属的独特的钯/金催化剂或预催化剂（任选煅烧的）。 第二方面涉及基于层状载体材料的钯/金催化剂或预催化剂，其中一层载体材料基本上不含催化组分。 第三方面涉及在含氧化锆载体材料上的钯/金催化剂或预催化剂。 第四方面涉及由基本上不含氯的催化组分制备的钯/金催化剂或预催化剂。

    Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate
    27.
    发明授权
    Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate 失效
    载体催化剂，其制备方法及其用于制备乙酸乙烯酯的用途

    公开(公告)号：US5250487A

    公开(公告)日：1993-10-05

    申请号：US900839

    申请日：1992-06-18

    申请人： Peter Wirtz ,  Karl-Fred Worner ,  Friedrich Wunder ,  Klaus Fichler ,  Gunter Roscher ,  Ioan Nicolau

    发明人： Peter Wirtz ,  Karl-Fred Worner ,  Friedrich Wunder ,  Klaus Fichler ,  Gunter Roscher ,  Ioan Nicolau

    IPC分类号： B01J23/44 ,  B01J23/06 ,  B01J23/48 ,  B01J23/52 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J23/89 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C69/15 ,  B01J37/06

    CPC分类号： B01J37/0205 ,  B01J23/58 ,  B01J23/60 ,  C07C67/055

    摘要： The invention relates to a process for the preparation of a catalyst which contains palladium and/or compounds thereof and alkali metal compounds, and additionally cadmium compounds and/or gold and/or compounds thereof, on support particles which have been pressed from SiO.sub.2 or an iO.sub.2 -Al.sub.2 O.sub.3 mixture with the aid of a binder which comprisesa) washing the roasted support particles with an acid which does not react with SiO.sub.2 or SiO.sub.2 -Al.sub.2 O.sub.3 mixtures, until no further cations of the binder employed during pressing of the support particles are released from the support particles;b) then impregnating the support particles with palladium, and gold or cadmium;c) then bringing the impregnated support particles into contact with a solution of a base at least until the thickness of the nobel metal shell generated in this way on the support particles no longer changes substantially; andd) then impregnating the support particles with an alkali metal compound.A shell-like distribution of the palladium and if appropriate of the gold in the support particles is generated in this manner.Furthermore, the invention relates to a catalyst prepared in this way and to its use for the preparation of vinyl acetate.

    摘要翻译： 本发明涉及一种制备催化剂的方法，该催化剂包含钯和/或其化合物和碱金属化合物，以及另外的镉化合物和/或金和/或其化合物，其在从SiO 2或 iO 2 -Al 2 O 3混合物，其包括a）用不与SiO 2或SiO 2 -Al 2 O 3混合物反应的酸洗涤焙烧的载体颗粒，直到在压制载体颗粒期间不再使用粘合剂的阳离子释放 从支撑颗粒; b）然后用钯和金或镉浸渍载体颗粒; c）然后使浸渍的载体颗粒与碱的溶液接触，至少直到以这种方式在载体颗粒上产生的诺贝尔金属壳的厚度不再显着变化; 和d）然后用碱金属化合物浸渍载体颗粒。 以这种方式产生钯的壳状分布和如果合适的支撑颗粒中的金。 此外，本发明涉及以这种方式制备的催化剂及其用于制备乙酸乙烯酯的用途。

    Process for producing 2-hydroxyphenyl lower alkyl ketones
    28.
    发明授权
    Process for producing 2-hydroxyphenyl lower alkyl ketones 失效
    2-羟基苯基低级烷基酮的制备方法

    公开(公告)号：US4652683A

    公开(公告)日：1987-03-24

    申请号：US803195

    申请日：1985-12-02

    申请人： Ioan Nicolau ,  Adolfo Aguilo

    发明人： Ioan Nicolau ,  Adolfo Aguilo

    IPC分类号： B01J29/035 ,  B01J29/40 ,  C07C45/46 ,  C07C45/54

    CPC分类号： C07C45/46 ,  B01J29/035 ,  B01J29/40 ,  C07C45/54

    摘要： A process is provided for the production of 2-hydroxyphenyl lower alkyl ketones, e.g. 2-hydroxyacetophenone, by reacting phenol and a lower alkanoic acid, e.g. acetic acid or an ester of phenol and a lower alkanoic acid, e.g. phenyl acetate, in the presence of a silicalite catalyst containing about 700 to 14000 ppm of alumina, which has been calcined at least once from the as synthesized form. The reaction is preferably conducted in the vapor phase in the presence of an inert gas such as nitrogen.

    摘要翻译： 提供了制备2-羟基苯基低级烷基酮的方法，例如 2-羟基苯乙酮，通过使苯酚和低级链烷酸反应，例如 乙酸或苯酚和低级链烷酸的酯，例如 在含有约700至14000ppm氧化铝的硅沸石催化剂存在下，将其从合成形式中煅烧至少一次。 反应优选在惰性气体如氮气存在下在气相中进行。