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  • Title(Kor)
    Kideco 석탄의 스팀 가스화 반응에서 K2CO3 촉매의 비활성화 거동
  • Title(Eng)
    Deactivation Behavior of K2CO3 Catalyst in the Steam Gasification of Kideco Coal
  • Keyword
    Steam gasification(스팀가스화), Catalyst(촉매), Coal(석탄), Deactivation(비활성화), Potassium(칼륨)
  • Author(Kor)
    Paul Victor1,2ㆍ김수현1ㆍ유지호1†ㆍ이시훈1ㆍ임영준1ㆍ임정환1ㆍ김상도1ㆍ전동혁1ㆍ최호경1ㆍ이영우2†
  • Author(Eng)
    PAUL VICTOR1,2,SOOHYUN KIM1, JIHO YOO1†, SIHYUN LEE1, YOUNGJOON RHIM1, JEONGHWAN LIM1, SANGDO KIM1, DONGHYUK CHUN1, HOKYUNG CHOI1, YOUNGWOO RHEE2†
  • Date
    2016.10
  • Attach file
  • Page
    Page. 517~525
  • Abstract(Eng)
  • The present work investigates the effect of K2CO3 catalyst on steam gasification of Kideco coal and the deactivation of the catalyst due to thermal exposure and interaction with coal ash. The gasification reactivity at 700°C is highly enhanced by K2CO3, which is not deactivated by the heat treatment at T ≤ 800°C. TGA and XRD results prove minor decomposition of K2CO3 after the calcination at 800°C. K2CO3 is, however, evaporated at the higher temperature. Assuming the conversion of K2CO3 into K2O by the decomposition and into K2O·2.5SiO2 and KAlO2 by the interaction with coal ash, the reactivity of the gasification is evaluated in the presence of K2O, K2O・2.5SiO2 and KAlO2. Among them, K2O is the most active, but much lower in the activity than K2CO3. XRD results show that K2CO3 could react readily with the ash above 700°C.