Promoter effects on iron-silica Fischer-Tropsch nanocatalysts

Conversion of carbon dioxide to lower olefins and hydrocarbons at atmospheric pressure

Rhodri E. Owen, Justin P. O'byrne, Davide Mattia, Pawel Plucinski, Sofia I. Pascu, Matthew D. Jones

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

If CO2 hydrogenation is to become a viable process for the utilisation of CO2, improved catalysts are urgently needed. We report the promotional effects of Group 11 and 13 metals on the performance of iron–silica catalyst systems under atmospheric pressure. The addition of low loadings of gold resulted in a significant improvement in catalyst performance both in terms of conversion and selectivity to lower (C2–C4) olefins. Small loadings of indium proved highly effective for increasing CO2 conversion, whereas at higher loadings the selectivity to lower olefins could be dramatically increased. Catalysis tests involving palladium-promoted systems also proved successful with large increases in selectivity towards C5+ hydrocarbons observed. The catalysts were characterised by X-ray photoelectron spectroscopy, TEM and SEM, which confirmed the nanostructured nature of the catalytic species involved.
Original languageEnglish
Pages (from-to)1536-1544
Number of pages9
JournalChemPlusChem
Volume78
Issue number12
Early online date7 Oct 2013
DOIs
Publication statusPublished - Dec 2013

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Alkenes
Hydrocarbons
Carbon Dioxide
Silicon Dioxide
Atmospheric pressure
Iron
Catalysts
Catalyst selectivity
Indium
Palladium
Gold
Catalysis
Hydrogenation
X ray photoelectron spectroscopy
Metals
Transmission electron microscopy
Scanning electron microscopy

Cite this

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AU - Mattia, Davide

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AU - Jones, Matthew D.

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