Fe:Co/TiO2 bimetallic catalysts for the Fischer–Tropsch reaction

Duvenhage, D.J.; Coville, Neil J.

doi:10.1016/s0926-860x(02)00118-7

Cited by 67 publications

(30 citation statements)

References 40 publications

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“…An example is the study of the effect of calcination and reduction conditions on the activity of (CoFe)/TiO 2 . 55 The activity was almost doubled when the reduction temperature was increased from 250 to 300…”

Section: Factors Leading To the Lack Of A Consistent Structure-activimentioning

confidence: 99%

Bimetallic catalysts for the Fischer–Tropsch reaction

et al. 2011

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This short critical review summarises and analyses the developments in Fischer-Tropsch catalysis using bimetallic alloys. We introduce a simple notation for such catalysts, and monitor the reports of synergistic effects and composition/performance relationships. Special attention is given to CoFe alloys on a variety of supports, and to the effects of catalyst preparation methods and pre-treatment conditions. The key drawbacks in comparing the large amount of data available on Fischer-Tropsch catalysis are the high dimensionality of the problem and the lack of long time-on-stream studies. Based on the new understanding coming from characterisation studies of supported bimetallic particles, we propose a structured approach for effectively studying Fischer-Tropsch catalysis.

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Section: Factors Leading To the Lack Of A Consistent Structure-activimentioning

confidence: 99%

Bimetallic catalysts for the Fischer–Tropsch reaction

et al. 2011

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“…A large batch of a 10% metal loaded 5:5 Fe:Co/TiO 2 catalyst was prepared by a single metal addition incipient wetness procedure as discussed previously [22,24]. The TiO 2 support (Degussa P25) was calcined in air at 400°C for 16 h, the active metals were added and the catalyst was then calcined in air at 200°C for 16 h. The resulting Fe:Co/TiO 2 catalyst was divided into 10 fractions.…”

Section: Methodsmentioning

confidence: 99%

“…From earlier studies it is known that Fe surface enrichment occurs in 5:5 Fe:Co catalysts [22,24] suggesting that the surface ratio Fe:Co >1. It had thus been hoped that promoter addition would enhance the catalyst activity substantially.…”

Section: Impact Of the Promoters On The Fe:co/tio 2 Catalystsmentioning

confidence: 98%

Effect of K, Mn and Cr on the Fischer–Tropsch Activity of Fe:Co/TiO2 Catalysts

Duvenhage

Coville

2005

Catal Lett

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A range of 5% Fe/5% Co bimetallic catalysts supported on TiO 2 was promoted with 0.1%, 0.5% and 1.0% potassium, chromium and manganese respectively, and their physical properties and Fischer-Tropsch (FT) CO hydrogenation capabilities were evaluated. Low level promotion (0.1% and 0.5%) by K and Cr modestly improved the activity, decreased the selectivity to methane and increased the +C 5 fraction of the FT product while the Mn promoted catalysts retarded activity and reduced selectivity.

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“…[341] As a conventional transition metal catalyst it is used in a wide variety of reactions, such as the selective reduction of nitrogen oxides to nitrogen, [342] decomposition of dioxins [343] and chlorinated compounds [344] and Fischer-Tropsch synthesis. [345] Since the first observation [346] that a rutile TiO 2 anode could split water (2H 2 O ! 2H 2 þ O 2 ), and the first demonstration [347] of an efficient solar cell using nanocrystalline TiO 2 , the photocatalytic and photovoltaic properties have excited great interest.…”

Section: Catalysis and Adsorptionmentioning

confidence: 99%