Change of catalytic properties of FeZnO/zeolite composite catalyst in the hydrogenation of carbon dioxide

Fujiwara, Masahiro; Kieffer, R.; Ando, Hisanori; Xu, Qiang; Souma, Yoshie

doi:10.1016/s0926-860x(96)00360-2

Cited by 54 publications

(44 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[7,8] This paper,h owever, focusesonthe combination of the reverse water-gas shift reaction (RWGS) and the Fischer-Tropsch (FT) process, ar oute which has attracted ag reat deal of attention in the literature. [2,[9][10][11][12][13][14][15][16] The majority of studies in the area, though, have focusedo n 'traditional" Fischer-Tropsch catalysts with iron-and cobaltbased systemsr epresenting as ignificant portion of the work.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

et al. 2017

View full text Add to dashboard Cite

The conversion of CO2 to hydrocarbons is increasingly seen as a potential alternative source of fuel and chemicals, while at the same time contributing to addressing global warming effects. An understanding of kinetics and mass transfer limitations is vital to both optimise catalyst performance and to scale up the whole process. In this work we report on a systematic investigation of the influence of the different process parameters, including pore size, catalyst support particle diameter, reaction temperature, pressure and reactant flow rate on conversion and selectivity of iron nanoparticle ‐silica catalysts. The results provided on activation energy and mass transfer limitations represent the basis to fully design a reactor system for the effective catalytic conversion of CO2 to hydrocarbons.

show abstract

Section: Introductionmentioning

confidence: 99%

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

et al. 2017

View full text Add to dashboard Cite

show abstract

“…At present, several kinds of the CO 2 catalytic reduction were studied by chemical method [6], mineralization [7], photochemical method [8,9] and Electrocatalytic conversion [10]. Motiei et al reported the technique that CO 2 was reacted with metallic magnesium at 1000°C and 10,000 bar to produce a small amount of CNTs and nested fullerenes [11].…”

Section: Introductionmentioning

confidence: 99%

Carbon dioxide catalytic conversion to nano carbon material on the iron–nickel catalysts using CVD-IP method

Guo

Chu

et al. 2015

Journal of Energy Chemistry

View full text Add to dashboard Cite

“…Attention has been drawn to the ZnFe 2 O 4 spinel phase and its effect on CO 2 selectivity in Fe-Zn-based catalysts [10]. Several reports examine CO [11] and CO 2 [12][13][14] hydrogenation over Fe-Zn-based catalysts and the present authors have arrived at an optimum Zn/Fe ratio of 0.25 to achieve low CO 2 selectivity with a minimised compromise of the FTS active site precursor. Although copper and potassium are benchmark promoters in commercial iron-based FT catalysts, potassium has been found to enhance WGS activity in Fe-Zn-based catalysts.…”

Section: Introductionmentioning

confidence: 82%

“…Figure 1 shows the H-TPR profiles of Fe-Zn oxide at the Zn/Fe ratios 0, 0.1, 0.2 and 0.25. The profile of the zinc-free oxide displays two features, a narrow peak [12]. However, the ZnFe 2 O 4 phase has been implicated as an active component which is capable of converting CO 2 into methanol [12][13][14].…”

Section: Reduction Behaviourmentioning

confidence: 99%

“…The profile of the zinc-free oxide displays two features, a narrow peak [12]. However, the ZnFe 2 O 4 phase has been implicated as an active component which is capable of converting CO 2 into methanol [12][13][14]. It can therefore be suggested that the ZnFe 2 O 4 phase does not only act as a structural promoter, it also plays a key role in the lower CO 2 selectivity by in situ recycling of CO 2 generated by WGS and oxygen removal via a direct CO dissociation mechanism [18].…”

Section: Reduction Behaviourmentioning

confidence: 99%

See 1 more Smart Citation

Comparative TPR and TPD Studies of Cu and Ca Promotion on Fe-Zn- and Fe-Zn-Zr-Based Fischer-Tropsch Catalysts

James

Chowdhury

Maity

2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

Re´sume´-É tudes comparatives par TPR et TPD de la promotion par Cu et Ca de I'activite´de catalyseurs Fischer-Tropsch Fe-Zn et Fe-Zn-Zr -Cette e´tude montre l'effet promoteur du zirconium sur les catalyseurs a`base de Fe-Zn pour stimuler les sites actifs des catalyseurs Fischer-Tropsch (FT). Les sites actifs des catalyseurs sont e´galement favorise´s par du cuivre et du calcium et ils sont examine´s en utilisant un programme de re´duction en tempe´rature (TPR, Temperature-Programmed Reduction) sous H 2 et CO et un programme de de´sorption en tempe´rature (TPD, Temperature-Programmed Desorption) sous NH 3 et de CO 2 . Les re´sultats sont pre´sente´s sous forme d'une e´tude comparative entre les catalyseurs Fe-Zn et ceux Fe-ZnZr. Les re´sultats montrent que l'addition de Zr au catalyseur Fe-Zn augmente la disponibilite et la dispersion des pre´curseurs des sites actifs et que la promotion par du cuivre ou du calcium, inde´pendamment et en synergie, ame´liore la re´duction des catalyseurs de Fe-Zn-Zr. La pre´sence de calcium favorise la carburation alors que celle du cuivre l'inhibe. L'effet du calcium et du cuivre sur l'acidite´/basicite´de la surface est gouveme´par la nature des interactions entre les phases du catalyseurs. L'ampleur de la re´duction refle`te la disponibilite´et la dispersion des pre´curseurs de la phase active tandis que l'e´tendue de la carburation influera sur la se´lectivite´des catalyseurs.Abstract -Comparative TPR and TPD Studies of Cu and Ca Promotion on Fe-Zn-and Fe-Zn-ZrBased Fischer-Tropsch Catalysts -The present study demonstrates the effect of zirconium promotion on Fe-Zn-based catalysts to boost the active sites of Fischer-Tropsch (FT) catalysts. The catalysts are also promoted by Cu and Ca and the active sites are examined using Temperature-Programmed Reduction (TPR) with H 2 and CO and Temperature-Programmed Desorption (TPD) with NH 3 and CO 2 . The results are presented as a comparative study between Fe-Znand Fe-Zn-Zr-based catalysts. The results show that addition of Zr to Fe-Zn catalysts increases the availability and dispersion of the precursor to the active sites and promotion with Cu and Ca independently and synergistically enhances reduction of Fe-Zn-Zr-based catalysts. The presence of Ca promotes carburisation, while Cu inhibits carburisation. The impact of the Ca and Cu on the surface acidity/basicity is governed by the nature of the interaction between the phases in the catalysts. The extent of reduction reflects the availability and dispersion of the precursor to the active phase, while the extent of carburisation will impact on the selectivity of the catalysts.

show abstract

Change of catalytic properties of FeZnO/zeolite composite catalyst in the hydrogenation of carbon dioxide

Cited by 54 publications

References 36 publications

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

Carbon dioxide catalytic conversion to nano carbon material on the iron–nickel catalysts using CVD-IP method

Comparative TPR and TPD Studies of Cu and Ca Promotion on Fe-Zn- and Fe-Zn-Zr-Based Fischer-Tropsch Catalysts

Contact Info

Product

Resources

About

Change of catalytic properties of FeZnO/zeolite composite catalyst in the hydrogenation of carbon dioxide

Cited by 54 publications

References 36 publications

Kinetics of CO2 Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

Kinetics of CO2 Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

Carbon dioxide catalytic conversion to nano carbon material on the iron–nickel catalysts using CVD-IP method

Comparative TPR and TPD Studies of Cu and Ca Promotion on Fe-Zn- and Fe-Zn-Zr-Based Fischer-Tropsch Catalysts

Contact Info

Product

Resources

About

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts

Kinetics of CO₂ Hydrogenation to Hydrocarbons over Iron–Silica Catalysts