Molybdenum and Tungsten-Based Catalysts

Molybdenum and Tungsten-Based Catalysts by B.F.S

High-Performance Catalysts for Hydrogenation, Desulfurization, and Olefin Metathesis

Molybdenum (Mo) and Tungsten (W)-based catalysts are essential in a wide range of industrial chemical reactions due to their excellent redox properties, thermal stability, and resistance to poisoning. At B.F.S, we provide advanced Mo- and W-containing catalysts, optimized for applications such as hydrotreating, olefin metathesis, oxidation, and fine chemical synthesis.

Key Features

🔁 Redox Activity: Effective in reactions involving electron transfer, such as hydrogenation and selective oxidation.
🔬 Strong Metal–Support Interaction: Typically supported on Al₂O₃, SiO₂, TiO₂, or zeolites for enhanced dispersion and catalytic performance.
🌡️ Thermal & Hydrothermal Stability: Maintains activity at high temperatures and under harsh process conditions.
❌ Sulfur and Nitrogen Resistance: Excellent tolerance to feed contaminants, making them ideal for refining operations.

Core Applications

1. Hydrotreating (HDS, HDN, and HDO)

Mo/Co/Al₂O₃ and W/Ni/Al₂O₃ catalysts are widely used in Hydrodesulfurization (HDS), Hydrodenitrogenation (HDN), and Hydrodeoxygenation (HDO) processes to purify petroleum streams.
These catalysts remove sulfur, nitrogen, and oxygen compounds from diesel, naphtha, and renewable bio-oils.

2. Olefin Metathesis

Mo and W-oxide catalysts (often supported on silica) are used in olefin metathesis reactions such as:
- Propylene production
- Ethylene conversion
- Alkene rearrangements
These are key in polymer production and green chemistry pathways.

3. Selective Oxidation

Mo-based catalysts (e.g., Mo-V-Te-Nb-O) are employed in oxidation of propane to acrylic acid or methanol to formaldehyde.
W-based catalysts are effective in NOx reduction and oxidative dehydrogenation reactions.

4. Fine Chemicals & Specialty Catalysis

Used in epoxidation, olefin isomerization, and alcohol oxidation.
Mo complexes act as homogeneous catalysts in pharmaceutical and agrochemical industries.

Catalyst Systems Offered by B.F.S

Catalyst Type	Composition	Key Application
Co-Mo/Al₂O₃	Cobalt-Molybdenum	Hydrodesulfurization (HDS)
Ni-Mo/Al₂O₃	Nickel-Molybdenum	HDN, HDO (Bio-oil upgrading)
Ni-W/Al₂O₃	Nickel-Tungsten	Deep HDS, aromatic saturation
MoOx/SiO₂	Molybdenum oxide on silica	Olefin metathesis
WOx/SiO₂ or TiO₂	Tungsten oxide on supports	Alkene metathesis, oxidation
Mo-V-based mixed oxides	Multimetal oxides	Propylene and methanol oxidation