A simple and low cost method for the synthesis of metallic cobalt nanoparticles without further reduction as an effective catalyst for Fischer–Tropsch Synthesis

Eshraghi, Amir; Mirzaei, Ali Akbar; Rahimi, Rahbar; Atashi, Hossein

doi:10.1007/s11144-021-02046-0

Cited by 4 publications

(2 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before looking at the effect that carbon nanostructures have on auto-reduction of FTS-based catalysts, how auto-reduction is a self-sustaining process will be considered, by comparing it to a conventionally-reduced catalyst using H 2 . In terms of the auto-reduction technique, one study compared Co-based catalysts reduced under an inert medium with one reduced under H 2 [33]. With the former, auto-reduction was employed to transform cobalt (II) formate dihydrate under a high-purity nitrogen atmosphere at 380 °C for 4 h, in order to produce metallic Co nanoparticles.…”

Section: Metal Oxide Supports For Ftsmentioning

confidence: 99%

“…As shown in Table 1, the auto-reduced catalyst shows higher light gas selectivity compared to the H 2 -reduced Fig. 2 CO conversion as a function of time on stream (TOS) for decomposed cobalt (II) formate dihydrate in a fixed bed reactor at T = 230 °C, P = 8 bar, H2/CO = 2 and GHSV = 3600 h −1 [33] catalyst. The authors attributed this to large cobalt nanoparticles (51 nm) for the H 2 -reduced catalyst, which favour higher carbon chain growth than do smaller autoreduced cobalt nanoparticles (22 nm).…”

Section: Metal Oxide Supports For Ftsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of the Use of Carbon Nanostructures and Other Reducing Agents During Auto-reduction for Fischer–Tropsch Synthesis and Other Applications

Ncube

Moyo

2023

Catal Lett

View full text Add to dashboard Cite

Fischer–Tropsch Synthesis (FTS) is an important process in the production of liquid fuels in the energy sector, due to its flexibility for use with other technologies that can produce carbon monoxide (CO) and hydrogen. Catalysts have found substantial use in FTS to improve the process efficiency. However, the use of conventional FTS catalyst reduction techniques using (hydrogen (H2), CO and syngas) to activate the metal precursor has been accompanied by strong metal-support interactions. Such limitations have driven the quest for better technologies to ensure FTS catalysis reaches its full capacity. In this article, we review the activation techniques used, with emphasis on the contemporary auto-reduction technique, which has revealed energy-saving merits. Auto-reduction has the advantage of reducing the number of steps involved in catalyst preparation prior to FTS as well as eliminating costly reducing agents such as H2, CO and syngas. Auto-reduction in this article refers to the reduction of the metal precursor using a carbon support. We firstly provide a comprehensive review of the traditional reducing agents, followed by a review of the contemporary auto-reduction technique. A comparison of the conventional FTS catalyst reduction and auto-reduction techniques is provided to allow for a fundamental understanding of the merits and demerits of both techniques. The different types of nanostructured carbon materials used in aiding auto-reduction for the FTS process are reviewed. Graphical Abstract

show abstract

Section: Metal Oxide Supports For Ftsmentioning

confidence: 99%

Section: Metal Oxide Supports For Ftsmentioning

confidence: 99%