Synthesis of light alkenes from syngas on silicalite-1 supported cobalt and cobalt-manganese catalysts

Das, Debasish; Ravichandran, G.; Chakrabarty, D. K.

doi:10.1016/0926-860x(95)00141-7

Cited by 32 publications

(20 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two types of oxygen peaks were found in the impregnated samples, one around 532.6 eV, assigned to oxygen The uncertainty on the Q area values is 5%. in a Si-O-Si framework [30], and the other, a very small contribute, at 529.8 eV, which includes physisorbed hydroxyl groups, and chemisorbed or structurally bound H 2 O in contact with the surface. The binding energies (BE) of the O 1s and Mn 2p band, obtained calibrating the spectrum using the Si 2p peak at 103.4 eV, are reported in Table 3.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of mesoporous Mn-MCM-41 materials

Saladino¹,

Kraleva

Todorova

et al. 2011

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of mesoporous Mn-MCM-41 materials

Saladino¹,

Kraleva

Todorova

et al. 2011

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…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%

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

“…4.1.4.2 Supported Co-Mn Fischer-Tropsch Catalysts. F-T synthesis of lower hydrocarbons on silicalite-1 supported Co and Co-Mn catalysts was reported by Das et al 110,119 Co 3 O 4 was found to be the only phase present in Mn-free catalysts after calcination, while the addition of Mn favored the formation of a mixed spinel structure of the type (Co 1Àx Mn x ) 3 O 4 . They considered that the addition of Mn decreased the reduction temperature of Co 3 O 4 and presumably its particle size.…”

Section: 13mentioning

confidence: 99%