Biosugarcane-based carbon support for high-performance iron-based Fischer-Tropsch synthesis

Area of Science:

• Catalysis
• Materials Science
• Chemical Engineering

Background:

• Developing cost-effective carbon supports is crucial for industrial Fischer-Tropsch synthesis (FTS).
• Optimizing metal-support interactions enhances active metal efficiency in catalysts.
• Iron-based catalysts are promising for FTS but require improved support materials.

Purpose of the Study:

• To prepare and evaluate a novel biochar support derived from sugarcane bagasse for Fe-based FTS catalysts.
• To investigate the influence of biochar functional groups on metal-support interactions and catalyst performance.
• To achieve high iron efficiency and catalytic activity for FTS.

Main Methods:

• Preparation of a tunable and scalable biochar support from sugarcane bagasse.
• Synthesis of Fe-based catalysts using the biochar support with controlled iron species.
• Characterization of catalyst properties, including metal-support interaction and active phase.
• Evaluation of catalytic performance in Fischer-Tropsch synthesis.

Main Results:

• The sugarcane bagasse-derived biochar support demonstrated tunable metal-support interactions.
• Fe-based catalysts supported on biochar exhibited high activity in FTS.
• The iron-time-yield reached 1,198.9 μmol g_Fe^-1 s^-1 for Fe₄/C.
• Abundant C-O and C=O functional groups on the biochar led to high Fe dispersion and formation of the ε-Fe₂C phase.

Conclusions:

• Sugarcane bagasse biochar is a viable, low-cost support for highly active Fe-based FTS catalysts.
• Controlled metal-support interactions via biochar functionalization maximize iron efficiency.
• This approach facilitates industrial-scale application of efficient Fe-based FTS catalysts.