State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences
University of Chinese Academy of Sciences

本实验在六方纳米片状的Co3O4(NMS-Co)上分别负载了1%含量的ZrO2、Al2O3和MnO2三种金属氧化物，制备反相催化剂模型，研究金属氧化物对钴基催化剂费托合成性能的影响。通过H2-TPD、CO-TPD以及催化剂性能评价结果发现，ZrO2和Al2O3能够显著增加NMS-Co催化剂的活性位点，在相同转化率条件下，反应温度从230℃分别降低至170、180 ℃，重质烃生成速率分别提升2.5、2倍，CH4选择性从37.8%分别降低至3.6%、12.0%。然而，MnO2使得NMS-Co催化剂CO转化率仅从30.9%增加到45.5%，CH4选择性降低至16.5%。

In this paper, three metal oxides, ZrO2, Al2O3 and MnO2, loaded with 1% content on hexagonal nanosheets of Co3O4 (NMS-Co), respectively, were prepared as reversed-phase catalyst models to investigate the effects of metal oxides on the performance of cobalt-based catalysts for Fischer-Tropsch synthesis. The results of H2-TPD, CO-TPD and catalyst performance evaluation revealed that ZrO2 and Al2O3 could significantly increase the active sites of NMS-Co catalysts, lower the reaction temperature from 230 ℃ to 170 and 180 ℃, respectively, and increase the heavy hydrocarbon generation rate by 2.5 and 2 times, respectively, under the same conversion conditions. The CH4 selectivity was reduced from 37.8% to 3.6% and 12.0%, respectively. However, MnO2 increased the CO conversion only from 30.9% to 45.5% and decreased the CH4 selectivity to 16.5%. A new idea is proposed to investigate the effect of metal oxides on the performance of cobalt-based Fischer-Tropsch catalysts.

山西省基础研究计划（202103021224444），中央引导地方科技发展资金（YDZJSX2021C041）和国家自然科学基金（22179136，22279155，22279156）资助

李博翔, 王俊刚, 王强, 张伟, 刘岩, 马占骋, 马中义, 侯博. 不同金属氧化物对钴基费托合成催化剂性能的影响[J]. 燃料化学学报（中英文）, 2023, 51(10): 1411-1420.

LI Bo-xiang, WANG Jun-gang, WANG Qiang, ZHANG Wei, LIU Yan, MA Zhan-cheng, MA Zhong-yi, HOU Bo. Study on the effect of different metal oxides on the performance of cobalt-based Fischer-Tropsch catalysts[J]. Journal of Fuel Chemistry and Technology, 2023, 51(10): 1411-1420.