公开(公告)号：EP0976713A1

公开(公告)日：2000-02-02

申请号：EP98306116.9

申请日：1998-07-31

申请人： Dairen Chemical Corporation

发明人： Chen, Shien-Chang ,  Lin, Fu-Shen ,  Jong, Yuh-Lih ,  Jang, Pi-Fwu

IPC分类号： C07C67/055 ,  C07C69/145 ,  B01J23/58 ,  B01J37/02

CPC分类号： B01J37/0205 ,  B01J23/52 ,  B01J23/58 ,  B01J23/66 ,  C07C67/055 ,  C07C69/01 ,  C07C69/15 ,  C07C69/145

摘要： This invention relates to a preparation process of a catalyst which comprises a noble metal, a metal for assisting catalysis, and an alkali or alkali earth metal compound, all of which are supported on the outer layer of a supporting materia. The preparation process comprises impregnating the supporting material with a solution containing an oxidative state noble metal as the main catalyst and an oxidative state metal for assisting catalysis, reducing the oxidative state metals into the metallic state in vapour phase with a gaseous reducing agent under constant temperature, constant pressure and constant gas concentration, then impregnating the treated supporting material with a solution of an alkali or alkali earth metal compound. The metal components-supporting catalyst prepared by the process according to the present invention has a high surface area and exhibits high catalytic activity, so that the catalytic ability and life of this heterophase catalyst can be improved. The catalyst prepared in the present invention is suitable for producing alkenyl acetates through reaction of olefins, acetic acid and oxygen in vapour phase.

摘要翻译： 本发明涉及一种催化剂，其包含贵金属，用于辅助催化金属，和以碱金属或碱土金属化合物，所有这些都支撑在支撑本草的外层上的制备方法。 所述制备方法包括浸渍与氧化状态的贵金属的含有作为主催化剂，在与恒定温度下的气态还原剂辅助催化，减少氧化态的金属为金属态的气相氧化态的金属的溶液中的支撑材料 ，恒定的压力和恒定的气体浓度，然后浸渍与碱金属或碱土金属化合物的溶液进行处理的辅助材料。 通过该方法制备gemäß对本发明的金属部件支撑催化剂具有高的表面积和高的催化活性展品，所以这样做是多相催化剂的催化能力和寿命可以提高。 在本发明中制备的催化剂适用于通过汽相的烯烃，乙酸和氧气的反应制备烯基乙酸盐。