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    • 5. 发明公开
    • 역수성가스 반응을 이용한 디메틸에테르의 제조방법
    • 使用反向气 - 气移动反应制备二甲醚的方法
    • KR1020050028932A
    • 2005-03-24
    • KR1020030064296
    • 2003-09-17
    • 한국과학기술연구원
    • 정광덕주오심오준우
    • C07C41/01
    • B01J23/002B01J23/06B01J23/34B01J23/755B01J23/80B01J37/03B01J2523/00C07C41/01Y02P20/146B01J2523/27B01J2523/31B01J2523/72B01J2523/847C07C43/043
    • Provided is a method for preparing dimethyl ether from synthesis gas to improve remarkably production yield and to reduce the amount of carbon dioxide discharged. The method comprises the step of preparing dimethyl ether from a synthesis gas in the presence of an acid catalyst and a methanol synthesis catalyst, wherein the carbon dioxide generated in the synthesis process of dimethyl ether is converted into carbon monoxide with the surplus hydrogen circulated in a reaction system in the presence of a catalyst for reverse water gas shift reaction and the converted one is recirculated into the synthesis process of dimethyl ether. Preferably the reverse water gas shift reaction is carried out at a temperature of 400-1,200 deg.C and at a pressure of 1-100 atm in the presence of a catalyst. Preferably the catalyst is the ZnO supported or coprecipitated in at least one oxide selected from Cr2O3, Al2O3, ZrO3, MgO, MnO and SiO2, and the content of ZnO is 10-90 wt% based on the total catalyst.
    • 提供从合成气中制备二甲醚的方法,以提高产量,并且减少二氧化碳的排出量。 该方法包括在酸催化剂和甲醇合成催化剂存在下由合成气制备二甲醚的步骤,其中在二甲醚合成过程中产生的二氧化碳转化为一氧化碳,剩余氢气在 在反向水煤气变换反应催化剂存在下反应,并将转化的催化剂再循环到二甲醚的合成过程中。 优选地,反相水煤气变换反应在400-1200℃的温度下和在催化剂存在下在1-100atm的压力下进行。 优选地,催化剂是在选自Cr 2 O 3,Al 2 O 3,ZrO 3,MgO,MnO和SiO 2中的至少一种氧化物中负载或共沉淀的ZnO,并且基于总催化剂,ZnO的含量为10-90重量%。