CAJ | 학술논문

采用沉淀氧化法制备了CoOx/CeO2催化剂, 并分别在干燥和含有水汽的原料气中进行了CO的氧化反应. 结果发现, CoOx/CeO2复合氧化物催化剂具有良好的CO低温氧化活性和抗水性. 在干燥的原料气中和196 K的条件下,该催化剂催化氧化CO的转化率可连续400 min以上保持在99%; 当温度升高到298 K反应 2 400 min后, CO的转化率可达到94%. 而当反应气中含有3.1%的水汽时, 在383 K下反应2 400 min后, CO的转化率仍可保持在79%.
채용침정양화법제비료CoOx/CeO2최화제, 병분별재간조화함유수기적원료기중진행료CO적양화반응. 결과발현, CoOx/CeO2복합양화물최화제구유량호적CO저온양화활성화항수성. 재간조적원료기중화196 K적조건하,해최화제최화양화CO적전화솔가련속400 min이상보지재99%; 당온도승고도298 K반응 2 400 min후, CO적전화솔가체도94%. 이당반응기중함유3.1%적수기시, 재383 K하반응2 400 min후, CO적전화솔잉가보지재79%.
A CoOx/CeO2 catalyst was prepared by the co-precipitation-oxidation method, and its catalytic performance for CO oxidation was investigated under humid and dry conditions ,respectively. The CoOx/CeO2 catalyst exhibited excellent activity and good resistance to water vapor poisoning. Remarkably, 99% CO conversion could be achieved at 196 K for more than 400 min under dry condition, and when the reaction was carried out at 298 K, the conversion of CO was maintained at 94% after 2 400 min. Even when 3.1% of water was added, the conversion of CO was still kept at 79% after 2 400 min on-stream at 383 K.