公开(公告)号：KR100859743B1

公开(公告)日：2008-09-24

申请号：KR1020070055982

申请日：2007-06-08

Applicant: 고등기술연구원연구조합

Inventor： 이승종 ,  유영돈 ,  윤용승 ,  이태진 ,  박노국 ,  김은진 ,  한기보

IPC: B01J23/94 ,  B01J23/72 ,  B01J23/06 ,  B01J21/04

CPC classification number: B01J37/031 ,  B01J21/04 ,  B01J23/06 ,  B01J23/72 ,  C07C41/01

Abstract: A method for preparing a Cu-Zn-Al based hybrid catalyst, the Cu-Zn-Al based hybrid catalyst prepared by the method, and a method for directly synthesizing dimethylether from syngas using the Cu-Zn-Al based hybrid catalyst are provided, wherein the Cu-Zn-Al based hybrid catalyst synthesizes dimethylether at high purity and high yield from syngas by maintaining excellent activity compared to existing hybrid catalysts. A method for preparing a Cu-Zn-Al based hybrid catalyst comprises the steps of: (1) dissolving copper(II) acetate(Cu(C2H3O2)2) and zinc acetate(Zn(C2H3O2)2) into water to form an aqueous Cu-Zn precursor solution; (2) adding an ammonium carbonate((NH4)2CO3) precipitant into the aqueous Cu-Zn precursor solution of the step(1) at a rate of 3 to 15 ml/min to coprecipitate Cu and Zn; and (3) filtering, cleaning, drying, and firing a sediment produced in the step(2) to obtain a Cu-Zn based oxide, and mixing the Cu-Zn based oxide with gamma-alumina(gamma-Al2O3). The copper(II) acetate and zinc acetate are used in the amount satisfying a Cu to Zn mole ratio of 5 to 9:1 to 5 in the step(1). The ammonium carbonate precipitant is added into the aqueous Cu-Zn precursor solution at a rate of 4.5 to 10 ml/min in the step(2). The ammonium carbonate precipitant is added in the form of an aqueous solution with a concentration of 1 to 3 M in the step(2). Further, a mixing ratio of the Cu-Zn based oxide and the gamma-alumina is 4 to 6:6 to 4.

Abstract translation: 提供了一种制备Cu-Zn-Al系杂合催化剂的方法，通过该方法制备的Cu-Zn-Al系混合催化剂和使用Cu-Zn-Al系混合催化剂从合成气中直接合成二甲醚的方法， 其中基于Cu-Zn-Al的杂化催化剂通过与现有的混合催化剂相比保持优异的活性，从合成气合成高纯度的二甲醚和高收率。 制备Cu-Zn-Al系杂合催化剂的方法包括以下步骤：（1）将乙酸铜（II）（Cu（C 2 H 3 O 2）2）和乙酸锌（Zn（C 2 H 3 O 2）2）溶解在水中形成水 Cu-Zn前体溶液; （2）以3〜15ml / min的速度将碳酸铵（（NH 4）2 CO 3）沉淀剂加入步骤（1）的Cu-Zn前体水溶液中以共沉淀Cu和Zn; （3）过滤，清洗，干燥和烧制步骤（2）中产生的沉淀物，得到Cu-Zn基氧化物，并将Cu-Zn基氧化物与γ-氧化铝（γ-Al 2 O 3）混合。 在步骤（1）中，乙酸铜（II）和乙酸锌是以满足Cu-Zn摩尔比为5至9:1至5的量使用的。 在步骤（2）中，以4.5-10ml / min的速率将碳酸铵沉淀剂加入到Cu-Zn前体水溶液中。 在步骤（2）中，以浓度为1至3M的水溶液的形式加入碳酸铵沉淀剂。 此外，Cu-Zn基氧化物和γ-氧化铝的混合比为4〜6：6〜4。