Selective synthesis of mixed alcohols from syngas over catalyst Fe2O3/Al2O3 in slurry reactor |
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Authors: | Xiaobing Zhang Qihai Guo Huayan Zheng Kechang Xie |
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Affiliation: | Key Laboratory of Coal Science & Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, Shanxi 030024, PR China |
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Abstract: | The Fe2O3/Al2O3 catalyst was studied to selectively synthesize mixed alcohols from syngas in a continuously stirred slurry reactor with the oxygenated solvent Polyethylene Glycol-400 (PEG-400). The selectivity of mixed alcohols in the products reached as high as 95 wt.% and the C2+ alcohols (mainly ethanol) was more than 40 wt.% in the total alcohol products at the reaction conditions of 250 °C, 3.0 MPa, H2/CO = 2 and space velocity = 360 ml/gcat h. The hydrogen temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS) measurements of the catalyst confirmed that the FeO phase was responsible for the high selectivity to mixed alcohols in the process. And the oxygenated solvent PEG-400 was also necessary for the selective synthesis of mixed alcohols in the reaction system. |
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Keywords: | Mixed alcohol synthesis Syngas Fe2O3/Al2O3 Slurry reactor |
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