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Citation: JIA Li-Tao, FANG Ke- ng, CHEN Jian-Gang, SUN Yu-Han. Effect of Pretreatment Atmosphere on the Structure of the Co-ZrO₂ Catalyst Prepared by Precipitation Method[J]. Acta Physico-Chimica Sinica, ;2006, 22(11): 1404-1408. doi: 10.3866/PKU.WHXB20061119 shu

Effect of Pretreatment Atmosphere on the Structure of the Co-ZrO₂ Catalyst Prepared by Precipitation Method

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China

Received Date: 8 March 2006
Available Online: 6 November 2006

Co-ZrO2 co-precipitation catalysts were used to investigate the effect of the pretreatment atmosphere on the texture, crystal phase, and morphology of catalysts. The result indicated that the catalysts were sintered evidently above 500 ℃ in Ar and H2 atmospheres. After the pretreated catalysts were exposed to air, all the cobalt species were in existence as Co3O4 phase and the particle shape of the catalysts changed little. The pretreatment in CO atmosphere led to serious cracking and obvious coke deposition, and the catalyst mainly contained the cubic cobalt species. The pretreatment of the catalyst with syngas gave rise to serious sintering and trace of fragmentation, and it was found that the cubic and hexa nal cobalt co-existed in the catalyst.
- Cobalt;Zirconia;Pretreatment atmosphere;FT catalyst
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沈阳化工大学材料科学与工程学院沈阳 110142

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Effect of Pretreatment Atmosphere on the Structure of the Co-ZrO2 Catalyst Prepared by Precipitation Method

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通讯作者: 陈斌, bchen63@163.com

Effect of Pretreatment Atmosphere on the Structure of the Co-ZrO₂ Catalyst Prepared by Precipitation Method