CAJ | 학술논문

CO加氢合成甲醇是强放热反应，液相合成甲醇因溶剂导热系数大能迅速移除热量有利于稳定操作，但因催化剂快速失活而未能工业化，催化剂稳定性成为液相合成甲醇的关键。本研究用完全液相法制备催化剂，比较了CuZnAlSi及Mn-CuZnAlSi的催化性能，并分析了改进的原因。结果表明：完全液相法制备Mn改性CuZnAlSi催化剂液相合成甲醇有良好稳定性，Mn-CuZnAlSi能提高甲醇选择性和催化活性，Mn-CuZnAlSi (CZAS-0.08Mn)浆状催化剂在250℃，5.0MPa下反应144h未见失活迹象。
CO가경합성갑순시강방열반응，액상합성갑순인용제도열계수대능신속이제열량유리우은정조작，단인최화제쾌속실활이미능공업화，최화제은정성성위액상합성갑순적관건。본연구용완전액상법제비최화제，비교료CuZnAlSi급Mn-CuZnAlSi적최화성능，병분석료개진적원인。결과표명：완전액상법제비Mn개성CuZnAlSi최화제액상합성갑순유량호은정성，Mn-CuZnAlSi능제고갑순선택성화최화활성，Mn-CuZnAlSi (CZAS-0.08Mn)장상최화제재250℃，5.0MPa하반응144h미견실활적상。
Synthesis of methanol from CO hydrogenation is a highly exothermic reaction, and slurry phase reaction is advantageous to remove the heat and stabilize the operation since the solvent has a good coefficient of heat transfer. However, the slurry phase reaction is still not applied for methanol industrial production because of the rapid deactivation of slurry catalysts, and the stability of catalysts has become a key to this reaction. In this work, a complete liquid phase technology was applied to prepare the slurry catalyst. The catalytic performances of the CuZnAlSi and Mn-CuZnAlSi catalysts were compared, and the causes resulting in the improvement were analyzed. The results showed that the Mn-CuZnAlSi prepared by complete liquid phase method had a good stability for slurry phase methanol synthesis, and could improve both the activity and the selectivity. For the Mn-CuZnAlSi catalyst CZAS-0.08Mn, no deactivation occurred for 144 hours under the reaction conditions of 250°C and 5.0MPa.