Methods of making alkenyl alkanoates
    3.
    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

    IPC分类号: B01J23/66

    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。