Catalyst for dimethyl ether synthesis and its preparation methods
    42.
    发明授权
    Catalyst for dimethyl ether synthesis and its preparation methods 失效
    二甲醚合成催化剂及其制备方法

    公开(公告)号:US07417004B2

    公开(公告)日:2008-08-26

    申请号:US10572707

    申请日:2004-08-30

    IPC分类号: B01J29/06

    摘要: This invention relates to a catalyst for synthesis of dimethyl ether and its preparation methods. More specifically, this invention relates to a catalyst with improved formulation for a highly efficient synthesis of dimethyl ether via dehydration of methanol. These catalysts are composed of hydrophobic zeolites, cations selected from alkali metal, alkaline earth metal, or ammonium along with alumina, silica, or silica-alumina. The methods of manufacturing the catalyst of this invention include (a) combining hydrophobic zeolites and precursors of alkali or alkaline earth metal cations with pastes of inorganic binders (at least one selected from the group consisting of bohemites, silica sol, and clay) and calcining the mixture at high temperature; (b) combining particles, which are obtained by calcining the hydrophobic zeolites impregnated with precursors of alkali or alkaline earth metal cations, with pastes of inorganic binders (at least one selected from bohemites, silica sol, and clay) and calcining the mixture at high temperature; (c) combining hydrophobic zeolites with pastes of inorganic binders (at least one selected from the group consisting of bohemites, silica sol, and clay), calcining the mixture at high temperature, impregnating the calcined product with precursors of ammonium cations and calcining the mixture at high temperature. The catalysts of this invention provide significantly high yields of dimethyl ether because they do not result in the production of hydrocarbon side products and their high catalytic activities are maintained for a prolonged period of time.

    摘要翻译: 本发明涉及二甲醚合成催化剂及其制备方法。 更具体地说,本发明涉及具有改进配方的催化剂,用于通过甲醇脱水高效合成二甲醚。 这些催化剂由疏水性沸石,选自碱金属,碱土金属或铵以及氧化铝,二氧化硅或二氧化硅 - 氧化铝的阳离子组成。 制备本发明的催化剂的方法包括(a)将疏水性沸石和碱金属或碱土金属阳离子的前体与无机粘合剂(至少一种选自由bohemites,硅溶胶和粘土组成的组)和煅烧 混合物在高温下; (b)将通过煅烧浸渍有碱金属或碱土金属阳离子前体的疏水性沸石获得的颗粒与无机粘合剂(选自硼酸盐,硅溶胶和粘土中的至少一种)的浆料混合并在高温下煅烧该混合物 温度; (c)将疏水性沸石与无机粘合剂(选自由bohemites,硅溶胶和粘土组成的组中选出的至少一种)的混合物组合,在高温下煅烧混合物,将煅烧产物与铵阳离子前体浸渍并煅烧该混合物 在高温下。 本发明的催化剂提供显着高的二甲醚产率,因为它们不会导致烃副产物的生产,并且它们的高催化活性保持较长时间。

    Lithium Secondary Battery For Improving Bondability of Tab to Polymer Film
    43.
    发明申请
    Lithium Secondary Battery For Improving Bondability of Tab to Polymer Film 审中-公开
    锂二次电池用于提高片与聚合物膜的粘合性

    公开(公告)号:US20080187828A1

    公开(公告)日:2008-08-07

    申请号:US11913567

    申请日:2006-05-09

    IPC分类号: H01M2/30

    摘要: A lithium secondary battery includes an electrode assembly having at least one tab which projects from one side of the electrode assembly, an external finishing material surrounding and sealing the tab except a distal end portion thereof and the electrode assembly, and polymer films interposed between the external finishing material and the tab to improve adhesion therebetween. When the tab has a thickness no less than a predetermined thickness, the tab is formed to have a sectional shape which ensures that an inside angle defined by one of upper and lower surfaces of the tab and an adjacent side surface of the tab becomes an obtuse angle, and the polymer films are formed to have protuberances on the inner surfaces thereof, so as to improve bondability between the tab and the polymer films.

    摘要翻译: 锂二次电池包括电极组件,其具有从电极组件的一侧突出的至少一个突片,围绕并密封除了其远端部分之外的突出部的外部整理材料和电极组件,以及插入在外部之间的聚合物膜 整理材料和凸片以改善它们之间的粘合性。 当突片具有不小于预定厚度的厚度时,突片形成为具有这样的截面形状,该截面形状确保了由突片的上表面和下表面之一以及突片的相邻侧表面之一限定的内角变为钝角 并且聚合物膜形成为在其内表面上具有突起,从而提高突片和聚合物膜之间的粘结性。