Citation: Chen CHEN, Hai-jie LI, Yang BAI, Fu-xiang FENG, Lei TIAN, Yong YANG, Yuan LIU, Qiang GUO. Effect of sulfidation temperature on component transformation and catalytic performance of direct coal liquefaction catalyst[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(1): 54-62. doi: 10.1016/S1872-5813(21)60118-4 shu

Effect of sulfidation temperature on component transformation and catalytic performance of direct coal liquefaction catalyst

Chen CHEN ^1, ,
Hai-jie LI ² ,
Yang BAI ¹ ,
Fu-xiang FENG ² ,
Lei TIAN ² ,
Yong YANG ^{2, 3} ,
Yuan LIU ^1,, ,
Qiang GUO ^{2, 3,,}

1.
School of Chemical Engineering, Tianjin University, Tianjin 300350, China
2.
National Energy Center for Coal to Liquids, Synfuels China Technology Co. Ltd, Beijing 101407, China
3.
Synfuels China Technology (Inner Mongolia) Co. Ltd, Ordos 010300, China

Corresponding author: Yuan LIU, yuanliu@tju.edu.cn Qiang GUO, guoqiang@synfuelschina.com.cn
Received Date: 18 May 2021
Revised Date: 2 June 2021

Figures(7)

A series of iron sulfide catalysts were prepared in 5% H₂S/N₂ atmosphere at different pre-sulfidation temperatures, and their catalytic activity for naphthalene hydrogenation was studied at 360 ℃ in 1% H₂S/H₂ atmosphere at 5 MPa. The component transformation of the catalyst under varied pre-sulfidation temperature and reaction conditions was researched using MES, XRD and XPS. The results revealed that the sulfidation process was in the form of sulfurizing from surface to interior in the order of FeS₂→FeS, Fe_1–xS→Fe₃S₄→Fe₂O₃ during which transferring sulfur to the body phase was benefited from the rise of temperature. After contacting 1% H₂S/H₂ gas, the particles rapidly transformed to Fe_1–xS from outside to the inside. By adjusting sulfidation conditions, the Fe_1–xS content was high while the particle size was small, which made it possible to obtain the greatest activity of the catalyst.
- direct coal liquefaction,
- γ-Fe₂O₃,
- sulfidation,
- component transformation,
- hydrogenation of naphthalene
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