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Studies on catalytic performance of precipitated iron/silica catalysts for Fischer–Tropsch Synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
43539 45976 2007 7 PDF Available
Title
Studies on catalytic performance of precipitated iron/silica catalysts for Fischer–Tropsch Synthesis
Abstract

The effects of coprecipitated silica were investigated in iron-based catalysts for Fischer–Tropsch Synthesis (FTS). Silica-containing catalysts exhibited micro pores (<10 nm) and large specific surface areas, while the silica-free catalyst had large pores (10–100 nm) and low specific surface area.Coprecipitated silica enhances the productivity of hydrocarbon for FTS, especially C5+ hydrocarbon selectivity.Silica-free and silica-containing iron catalyst showed high activity and stability over 100 h test, and exhibited little difference of the product selectivity (olefin/paraffin ratio) over the temperature range of 513–553 K.An iron catalyst has higher activity with the low H2/CO ratio (0.4–1.0). Thus, an iron catalyst has the advantage in applications to coal-derived gas, as compared to the cobalt-based catalyst.

Graphical abstractThe effects of coprecipitated silica were investigated in iron-based catalysts for Fischer–Tropsch Synthesis (FTS). Silica-containing catalysts exhibited micro pores (<10 nm) and large specific surface areas, while the silica-free catalyst had large pores (10–100 nm) and low specific surface area.Coprecipitated silica enhances the productivity of hydrocarbon for FTS, especially C5+ hydrocarbon selectivity. Silica-free and silica-containing iron catalyst showed high activity and stability over 100 h test. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Fischer–Tropsch Synthesis; Iron catalyst; Catalytic performance; 1-Olefin selectivity
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Studies on catalytic performance of precipitated iron/silica catalysts for Fischer–Tropsch Synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 328, Issue 2, 10 September 2007, Pages 117–123
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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