Improved alkene selectivity in carbon monoxide hydrogenation over silica supported cobalt-molybdenum catalyst

Chen, H.; Adesina, Adesoji A.

doi:10.1016/0926-860x(94)80211-4

Cited by 48 publications

(18 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Addition of low amounts of ruthenium to Co/TiO 2 or Co/SiO 2 increases the site time yield, which was ascribed to a reduced deactivation of the catalyst [62] (this could not be confirmed with Co/Al 2 O 3 [60,65,66]). [77,78], MnO [79][80][81][82], or ZnO [83] to supported cobalt catalysts has been investigated. The addition of these metal oxides affects the metallic cobalt dispersion [45, 70, 72-74, 81, 83]; this might become detrimental if dispersion increases to values larger than ca.…”

Section: Fementioning

confidence: 99%

See 1 more Smart Citation

Fischer‐Tropsch Catalysts for the Biomass‐to‐Liquid (BTL)‐Process

2008

View full text Add to dashboard Cite

The Fischer-Tropsch synthesis is at the heart of the Biomass-to-Liquids (BTL) process. Feasibility studies published in open literature typically consider cobaltbased catalysts for the Fischer-Tropsch synthesis. Here, we present an overview on the history and development up until the present for both cobalt-and ironbased Fischer-Tropsch catalysts. The role of the support material and various other additives to the catalyst formulation are discussed in detail with regard to activity, catalyst deactivation, and selectivity. Tentative explanations for e.g. the observed size dependency in cobalt-based catalysts and phase transformations in iron-based Fischer-Tropsch catalysts are offered. The productivity of cobalt-based catalysts at high conversion level is currently higher than that of iron-based catalysts. Nevertheless, it is argued that iron-based catalysts may be an attractive option for the BTL-process, since it is much cheaper, impacting on the cost of the process due to inevitable process set-ups in industrial operation. Improvement of current iron-based catalysts is however desired.

show abstract

Section: Fementioning

confidence: 99%

“…1). These oxides may cover the catalytically active cobalt metal surface [71,[75][76][77][80][81][82] resulting in a decrease in the total metal surface area. The coverage of metallic cobalt crystallites with these oxides may result in a chemical promotion of the active metal as visualized, e.g.…”

Section: Fementioning

confidence: 99%

Fischer‐Tropsch Catalysts for the Biomass‐to‐Liquid (BTL)‐Process

2008

View full text Add to dashboard Cite

show abstract

“…Platinum (Vada et al, 1995) enhances the overall reaction rate by increasing the cobalt dispersion. Molybdenum (Chen and Adesina, 1994) increases both the chain growth and the olefinicity of the product. Numerous studies have been devoted to ascertaining the influence of mixed carriers (e.g.…”

Section: Introductionmentioning

confidence: 98%

Effect of preparation conditions on the catalytic performance of Co/Ni catalysts for CO hydrogenation

Mirzaei

Shahriari

Arsalanfar

2011

Journal of Natural Gas Science and Engineering

View full text Add to dashboard Cite

“…It has been reported that the bimetallic catalysts containing Ni, Fe, Co and Ru are more active towards CO conversion and exhibit markedly improved selectivity for olefins and heavier hydrocarbons as compared with single metal catalysts [2][3][4][5][6][7]. Verma et al [3] studied the performance of MnO supported Co, Ni and Co-Ni bimetallic catalysts at 525-575 K and at atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

“…However, a major drawback of the process is the low selectivities for gasoline and diesel products. It has been reported that bimetallic catalysts containing Ni, Fe, Co and Ru are more active towards CO conversion, and exhibit markedly improved selectivity for olefins and heavier hydrocarbons as compared to single metal catalysts [2][3][4][5][6][7]. A large number of combinations of bimetallic catalysts are possible from the above four metals by varying the supports such as silica, alumina, titania, zirconia, zeolites, etc.…”

Section: Introductionmentioning

confidence: 99%

Carbon Monoxide Hydrogenation over Zirconia Supported Ni and Co-Ni Bimetallic Catalysts

Das¹,

Pradhan

Dalai³

et al. 2004

Catalysis Letters

View full text Add to dashboard Cite

Zirconia supported nickel and cobalt-nickel bimetallic catalysts were prepared and characterized for various physico-chemical properties. The hydrogenation of carbon monoxide was studied over these catalysts in the pressure range of 101.3-1654 kPa, temperature range of 513-533 K, weight hourly space velocity range of 8-14 h À1 and H2/CO mole ratio of 2. Catalysts containing both Co and Ni were found to give higher C 5þ hydrocarbons selectivity compared to that containing only Ni. A maximum C 5þ hydrocarbons selectivity of 55 wt% was obtained at 655 kPa pressure, 523 K and 9.6 h À1 of WHSV with catalyst containing 4.03 wt% Co and 2.64 wt% Ni. The C 2 and C 3 olefin contents of the products decreased with increase in pressure. Improved deactivation behavior of the catalysts was observed when operated at high pressure.

show abstract

Improved alkene selectivity in carbon monoxide hydrogenation over silica supported cobalt-molybdenum catalyst

Cited by 48 publications

References 31 publications

Fischer‐Tropsch Catalysts for the Biomass‐to‐Liquid (BTL)‐Process

Fischer‐Tropsch Catalysts for the Biomass‐to‐Liquid (BTL)‐Process

Effect of preparation conditions on the catalytic performance of Co/Ni catalysts for CO hydrogenation

Carbon Monoxide Hydrogenation over Zirconia Supported Ni and Co-Ni Bimetallic Catalysts

Contact Info

Product

Resources

About