Ruthenium Promotion of Co/Al2O3Fischer–Tropsch Catalysts

Kogelbauer, Andreas; Goodwin, James G.; Oukaci, R.

doi:10.1006/jcat.1996.0130

Cited by 233 publications

(113 citation statements)

References 0 publications

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…This suggests that the direct contact between Re and Co is not necessary in order to obtain a promoting effect of the noble metal on catalyst reducibility. The spillover mechanism of enhancement of cobalt reduction is also consistent with non-variance of intrinsic site activity of cobalt catalysts after promotion with noble metals (Pt, Re) usually observed by SSITKA method [16,[41][42][43] or calculated by normalizing the overall FT reaction rate by the number of metal sites measured by H 2 chemisorption [13].…”

Section: Cobalt Reducibilitymentioning

confidence: 62%

“…The improvements in cobalt reducibility may occur without any affect on cobalt dispersion as observed by Davis for CoRe/Al 2 O 3 catalysts [13]. While the improvement in cobalt reducibility has been observed with several noble metals (Pt, Ru, Pd, Ir, Re), platinum, rhenium and ruthenium seems to be the most efficient cobalt reducibility promoters [16,18,[27][28][29]. The enhancement in cobalt reducibility was observed with a large number of catalytic supports (Al 2 O 3 , SiO 2 , TiO 2 , ZrO 2 , etc.).…”

Section: Cobalt Reducibilitymentioning

confidence: 88%

“…Schanke et al [15] observed at atmospheric pressure in fixed bed reactor a 3-5 times increase in carbon monoxide hydrogenation rate on Pt-promoted alumina and silica supported catalysts; under 5 bar, the same authors [15] find that a 0.1% Pt-promoted cobalt alumina supported catalyst is 70% more active than the non promoted cobalt catalyst. Similarly at atmospheric pressure, Kogelbauer et al [16] reported a quadruple increase in carbon monoxide hydrogenation rate after promotion of 20 wt.% Co/Al 2 O 3 catalysts with 0.5% of ruthenium. A more than 8 times increase in FT reaction rate at atmospheric pressure was observed in our recent report [17] after promotion of 10 wt.% Co/Al 2 O 3 catalysts with 0.1% of platinum.…”

Section: Enhancement Of Catalytic Performancementioning

confidence: 99%

See 2 more Smart Citations

Promotion of Cobalt Fischer-Tropsch Catalysts with Noble Metals: a Review

Diehl¹,

Khodakov²

2008

Oil & Gas Science and Technology - Rev. IFP

165

109

View full text Add to dashboard Cite

Résumé-Promotion par les métaux nobles de catalyseurs Fischer-Tropsch à base de cobalt : une revue -La synthèse Fischer-Tropsch est une part essentielle du procédé XTL (X-To-Liquids, avec X = Gaz, Biomasse ou Charbon) qui convertit du gaz de synthèse en hydrocarbures pour carburants propres. Les catalyseurs à base de cobalt supportés sur des oxydes inorganiques constituent le meilleur compromis pour la production de paraffines à longues chaînes carbonées et de cires. L'efficacité du procédé FischerTropsch dépend très fortement de la performance du catalyseur à base de cobalt. La promotion de ce catalyseur par des métaux précieux peut très fortement améliorer ses performances. Cet article fait la revue des différents effets des métaux nobles sur la structure et la performance de catalyseurs à base de cobalt. Les impacts sur le coût et l'activité des catalyseurs apparaissent comme des éléments incontournables dans le design de catalyseurs performants pour la synthèse Fischer-Tropsch. (X-To-Liquids, with X = Gas, Biomass or Coal) Abstract -Promotion of Cobalt Fischer-Tropsch Catalysts with Noble Metals: a Review -FischerTropsch synthesis is a major part of XTL

show abstract

Section: Cobalt Reducibilitymentioning

confidence: 62%

Section: Cobalt Reducibilitymentioning

confidence: 88%

Section: Enhancement Of Catalytic Performancementioning

confidence: 99%

See 1 more Smart Citation

Promotion of Cobalt Fischer-Tropsch Catalysts with Noble Metals: a Review

Diehl¹,

Khodakov²

2008

Oil & Gas Science and Technology - Rev. IFP

165

109

View full text Add to dashboard Cite

show abstract

“…Issues explored using SSITKA have included among others the study of mechanisms, the presence and implications of site heterogeneity, the role of chemical promoters and the effect of operation conditions on the surface coverage of intermediates. For FTS, the use of SSITKA has resulted in an improved understanding on the effect of catalyst properties (promoters [72][73][74][75][76][77][78][79][80][81][82][83], support [84][85][86][87][88][89][90], particle size etc. [91][92][93][94]) and the reaction conditions [95][96][97][98][99][100][101] on the performance.…”

Section: Approaches Of Kinetic Analysis For Ftsmentioning

confidence: 99%

Recent Progresses in Understanding of Co-Based Fischer–Tropsch Catalysis by Means of Transient Kinetic Studies and Theoretical Analysis

Yang

Chen

et al. 2014

Catal Lett

View full text Add to dashboard Cite

During the last years it has been an increasing focus on fundamental studies of the Fischer-Tropsch synthesis (FTS). Steady-state isotopic transient kinetic analysis and first principles investigation have proven to be important methods in studying the reaction mechanism of FTS. The present contribution deals with recent progresses in understanding of the F-T mechanism on Co catalysts based on combined DFT calculations, in situ characterization, steady-state isotopic transient kinetic analysis and microkinetics. A brief outlook into future perspectives of the FTS for converting synthesis gas from different carbon sources to fuels and chemicals is also provided.

show abstract

“…Some of the metals used as promoters; like platinum and ruthenium; can themselves act as FT catalysts but due to the high prices of these metals they are more often used as promoters only [7,8,9]. Of the promoters used in this study ruthenium and rhenium are well known as promoters in the FTS.…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcination Conditions on the Dispersion of Cobalt Over Re, Ru and Rh Promoted Co/γ-Al2O3 Catalysts

et al. 2017

View full text Add to dashboard Cite

The effects of catalyst calcination conditions, such as calcination temperature and calcination atmosphere composition on the dispersion of cobalt particles over Co/γ Al O catalysts for Fischer-Tropsch conversion of synthesis gas are studied. A number of catalysts were prepared by incipient wetness impregnation of 20 wt% of cobalt onto γ Al O and promoted with 0.5 wt% ruthenium, rhenium, and rhodium. Metal dispersions of active metals were studied by chemisorption of carbon monoxide. The highest dispersion for Co/ γ Al O catalyst was achieved by calcination at 400 °C in a flow of N . Co metal dispersion seem to be increased in the calcination steps if a flowing gas was used instead of static calcination conditions. The addition of promoter metals like Ru, Re or Rh enhances the dispersion of the active metal.

show abstract

Ruthenium Promotion of Co/Al2O3Fischer–Tropsch Catalysts

Cited by 233 publications

References 0 publications

Promotion of Cobalt Fischer-Tropsch Catalysts with Noble Metals: a Review

Promotion of Cobalt Fischer-Tropsch Catalysts with Noble Metals: a Review

Recent Progresses in Understanding of Co-Based Fischer–Tropsch Catalysis by Means of Transient Kinetic Studies and Theoretical Analysis

Effect of Calcination Conditions on the Dispersion of Cobalt Over Re, Ru and Rh Promoted Co/γ-Al2O3 Catalysts

Contact Info

Product

Resources

About