公开(公告)号：KR100847443B1

公开(公告)日：2008-07-22

申请号：KR1020070018709

申请日：2007-02-23

Applicant: 고려대학교 산학협력단

Inventor： 이관영 ,  이대원 ,  이준엽 ,  장준호 ,  윤영식 ,  김명준

IPC: B01J23/74 ,  B01J23/745 ,  B01J23/75 ,  B01J23/755

CPC classification number: B01J23/745 ,  B01D53/00 ,  B01J23/06 ,  B01J23/75 ,  B01J23/755 ,  B01J37/0018 ,  B01J37/009 ,  B01J37/04

Abstract: A Cr-free catalyst for a high temperature water gas shift reaction, which does not comprise chromium or precious metals and shows high activities in the removal of carbon monoxide, is provided, and a method for preparing the Cr-free catalyst for high temperature water gas shift reaction to remove carbon monoxide is provided. In a catalyst for a high temperature water gas shift reaction to remove carbon monoxide, the catalyst for the high temperature water gas shift reaction is a Cr-free three component-based composite catalyst comprises iron and two components selected from nickel, cobalt, and zinc. A method for preparing a catalyst for a high temperature water gas shift reaction comprises the steps of: (a) mixing an iron precursor(Fe(NO3)3.9H2O) with distilled water, adding two selected from a nickel precursor(Ni(NO3)2.6H2O), a cobalt precursor(Co(NO3)3.6H2O), and a zinc precursor(Zn(NO3)2.6H2O) to a mixture of iron precursor and the distilled water, and agitating the mixture; (b) adding an aqueous solution in which distilled water and sodium carbonate are mixed to the mixture of the step(a) until a pH of the mixed solution becomes 2.5 to 3, and drying the mixed solution; (c) adding an aqueous solution in which distilled water and sodium hydroxide are mixed to the resulting material of the step(b) until a pH of the mixed solution becomes 7 to 8, and separating a produced sediment by a pressure reducing separator; and (d) washing the sediment obtained in the step(c) with distilled water, drying the washed sediment, and heat-treating the dried sediment at 400 to 600 deg.C.

Abstract translation: 提供了一种用于高温水煤气变换反应的不含铬或贵金属并且在除去一氧化碳中具有高活性的无Cr催化剂，以及用于制备用于高温水的无Cr催化剂的方法 提供了气体转换反应以除去一氧化碳。 在用于除去一氧化碳的高温水煤气变换反应的催化剂中，用于高温水煤气变换反应的催化剂是无Cr的三组分基复合催化剂，其包含铁和选自镍，钴和锌的两种组分 。 制备高温水煤气变换催化剂的方法包括以下步骤：（a）将铁前体（Fe（NO 3）3·4H 2 O）与蒸馏水混合，加入选自镍前体（Ni（NO 3） 2.6H2O），钴前体（Co（NO 3）3·6H 2 O）和锌前体（Zn（NO 3）2·6H 2 O））混合到铁前体和蒸馏水的混合物中，搅拌该混合物; （b）向所述步骤（a）的混合物中加入蒸馏水和碳酸钠的水溶液直至混合溶液的pH变为2.5〜3，并干燥所述混合溶液; （c）向所得到的步骤（b）的材料中加入蒸馏水和氢氧化钠的水溶液，直到混合溶液的pH变为7〜8，通过减压分离器分离生成的沉淀物; 和（d）用蒸馏水洗涤步骤（c）中得到的沉淀物，干燥洗涤的沉淀物，并在400-600℃下热处理干燥的沉淀物。