The activity of cobalt-zirconia and cobalt-nickel-zirconia preparations in the Fischer-Tropsch reaction

Bruce, Linda A.; Hope, G.J.; Mathews, J. F.

doi:10.1016/0166-9834(83)85005-2

Cited by 45 publications

(31 citation statements)

References 5 publications

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“…However, ZrO 2 /Cu has exhibited the higher activity and selectivity than ZnO/ Cu in various reactions such as Fischer-Tropsch synthesis [20,21], methanol synthesis [22,23], and hydrodesulfurization [24], which have attributed to the zirconia properties of high surface area, high thermal stability and the amphoteric character [20][21][22][23][24]. The data of S BET and XRD in the case also show that both promoters can improve the surface area of catalysts, stabilize the crystal size of copper and prevent copper particles from aggregation in the process of reaction.…”

Section: Discussionmentioning

confidence: 99%

The Role of the Promoters in Cu Based Catalysts for Methanol Steam Reforming

Mao

et al. 2009

Catal Lett

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Effects of promoters such as zirconia and zinc oxide to copper catalysts have been studied in methanol steam reforming (MSR) reaction at 260°C. The catalytic activity and stability of copper are improved by promoters, especially zirconia. The results of S BET and S Cu represent that both promoters can increase S BET of catalysts from 0.26 to 0.28-0.99 m 2 /g and S Cu of them from 0.13 to 0.21-0.25 m 2 /g and XRD further illustrate that they can stabilize the crystal size of copper in process of reduction and reaction. Besides, XPS results indicate that both ZnO and ZrO 2 can stabilize Cu ? species and promote the catalytic activity for MSR. In addition, the rich surface hydroxyl species on ZrO 2 /Cu account for its superior catalytic performance to ZnO/Cu and Cu.

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Section: Discussionmentioning

confidence: 99%

The Role of the Promoters in Cu Based Catalysts for Methanol Steam Reforming

Mao

et al. 2009

Catal Lett

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“…This is not surprising since readsorption of olefins will block sites that otherwise may contribute to chain propagation. Bruce et al (101) reported that the isomerization activity decreased on a precipitated Co-Ni/zirconia catalyst when compared to a pure Co/zirconia catalyst. This may suggest that adding Ni to a Co catalyst, similar to what Rytter et al (24) explored, may increase catalyst stability by decreasing readsorption and/or isomerization activity.…”

Section: Suggestions For Further Workmentioning

confidence: 98%

“…In 1983, Bruce et al (100,101) studied Ni-Zr and Co-Ni-Zr catalysts prepared by co-precipitation and impregnation techniques. Fischer-Tropsch synthesis was carried out at 1 bar, 200-250 • C, and H 2 /CO = 1.45.…”

Section: Nickel-promoted Cobalt and Ruthenium Catalystsmentioning

confidence: 99%

Nickel and Fischer-Tropsch Synthesis

2012

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“…Sulphated zirconia is active in the isomerization of linear to branched hydrocarbons. Various reactions such as hydrodesulphurization [5], methanol synthesis [6,7], and the Fischer-Tropsch reaction to give higher hydrocarbons [8,9] were reported to show higher activity and selectivity with zirconia than with conventional supports. However, zirconia exhibits polymorphic forms in the general purchased production (a mixture of monoclinic, tetragonal, and cubic phases), such as the zirconia produced by Toray Ltd and Tosoh Co., Japan.…”

Section: Introductionmentioning

confidence: 98%