CAJ | 학술논문

采用CO碳化SiO2和Al2O3负载的Co(NO3)2的方法制备了SiO2和Al2O3负载的Co2C催化剂，采用N2物理吸附、X射线衍射和H2-程序升温还原技术对催化剂进行了表征，并用于催化费托合成反应中。结果显示，需要较长碳化时间才可合成负载的Co2C催化剂；所制催化剂表现出CO加氢生成高碳醇的催化性能，其原因可能在于催化剂表面存在的金属Co物种使CO解离，表面Co2C物种有利于CO插入，从而导致醇的生成，但体相Co2C则不具有催化活性。
채용CO탄화SiO2화Al2O3부재적Co(NO3)2적방법제비료SiO2화Al2O3부재적Co2C최화제，채용N2물리흡부、X사선연사화H2-정서승온환원기술대최화제진행료표정，병용우최화비탁합성반응중。결과현시，수요교장탄화시간재가합성부재적Co2C최화제；소제최화제표현출CO가경생성고탄순적최화성능，기원인가능재우최화제표면존재적금속Co물충사CO해리，표면Co2C물충유리우CO삽입，종이도치순적생성，단체상Co2C칙불구유최화활성。
SiO2‐and Al2O3‐supported Co2C catalysts were prepared by carburizing supported Co precursors with CO. The catalysts were characterized by N2 physisorption, X‐ray diffraction and H2 tempera‐ture‐programmed reduction techniques, and evaluated by the Fischer‐Tropsch (F‐T) reaction. The results showed that SiO2‐ and Al2O3‐supported Co2C catalysts could be successfully obtained but sufficient carburization time was required. All of the as‐prepared supported Co2C catalysts exhibited activity and selectivity towards alcohols. It is considered that surface metallic Co species contribut‐ed to the activity, surface Co2C species were responsible for the formation of alcohols, and bulk Co2C species were inert during the F‐T reaction.