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Comparative study of iron-based Fischer–Tropsch synthesis catalyst promoted with potassium or sodium

Paper ID Volume ID Publish Year Pages File Format Full-Text
52463 46875 1962 6 PDF Available
Title
Comparative study of iron-based Fischer–Tropsch synthesis catalyst promoted with potassium or sodium
Abstract

FeCu/SiO2 catalysts, in which K or Na promoter is incorporated respectively, are prepared by a combination method of continuous co-precipitation and spray drying technology. The catalysts were characterized by temperature-programmed desorption and Mössbauer spectroscopy. The Fischer–Tropsch synthesis (FTS) performance of the catalysts was studied in a continuously stirred tank slurry reactor. The basicity of the K-promoted catalyst is enhanced, as demonstrated by CO2-TPD results. MES results show that sodium can weaken the dispersion of α-Fe2O3 phase; either potassium or sodium can promote carburization of the catalyst, while the effect of sodium is weaker. FTS results indicate that the addition of K or Na can improve the catalyst activity, and shift the product distribution to heavy hydrocarbons to the different extent.

Keywords
Potassium; Sodium; Promoter; Fischer–Tropsch synthesis; Iron-based catalyst
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Comparative study of iron-based Fischer–Tropsch synthesis catalyst promoted with potassium or sodium
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 12, December 2007, Pages 1957–1962
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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